Motoblock Kadvi MB-90. Technical characteristics, design and maintenance

Running in a new engine

Engine running-in is a mandatory procedure that extends the service life of the mechanism. To break in the engine of a walk-behind tractor, you must follow the operating instructions for the product and use high-quality fuel and oil of recommended brands.

Run-in is performed as follows:

1. Before starting the engine, you must check the oil level in the crankcase.
2. Check and, if necessary, fill the transmission with oil.
3. Fill the fuel tank with flammable material.
4. Start the engine at low speed.
5. Start working with the walk-behind tractor in a gentle mode, alternating gears. Till the soil in 2 steps to a depth of no more than 10 cm in 1 pass; cultivate in 2nd gear.
6. After break-in, change the oil in the engine, transmission components, and gearbox of the walk-behind tractor, inspect the consumables, change the oil filters, and fill in with new fuel.
7. The break-in procedure lasts about 8 hours.

After a competent running-in of the new motor, the walk-behind tractor is ready to work at maximum loads.

User manual

Each walk-behind tractor comes with an instruction manual. It contains detailed information on how to assemble the unit, how to start it, how to maintain it, as well as repair and replacement of components.

Before starting work, it is important to carefully read the operating instructions and strictly follow them. Before running-in equipment, it is necessary to carry out a preparatory procedure, including:

Before running-in equipment, it is necessary to carry out a preparatory procedure, including:

• filling the fuel tank with fuel;
• pouring oils into designated areas;
• checking the pressure in the pneumatic system.

In order for the equipment to serve for a long time, it is necessary to break it in. This is done within 24 hours. The equipment is turned on for 1.5 or 2 hours a day and work is carried out in a gentle mode. After the running-in is completed, you should change the oil in the walk-behind tractor and add fuel.

Proper maintenance of the unit, which includes a number of actions, will help extend its service life.

Timely change of oil fluids. For power mechanisms, it is recommended to change after 19-20 hours of operation. For the transmission, replacement is carried out after 100 hours of operation. Certain brands of oils are provided for different installations. Routine maintenance includes checking that the walk-behind tractor is ready for work. The reliability of fasteners, wheels, and the presence of a sufficient amount of oil are inspected. At the end of the work, it is also necessary to clean the components from dirt, dry them, and lubricate them. If there is no working period for a long time, it is recommended to prepare the equipment for downtime

To do this, it is freed from oils, collected, and placed in a place where it will not be exposed to the negative effects of the external environment. It is important to remember that even in the absence of visible damage, it is necessary to carry out scheduled technical inspections. The check will prevent possible breakdowns and injuries that may occur due to malfunctions, as well as extend the service life for many years. It is not recommended to use the walk-behind tractor in a hazardous area. If the machine will be operated at temperatures below 10 degrees, then it must be kept indoors for about 10 hours.

Failure to follow operating instructions can lead to rapid breakdown of parts or assemblies.

It is important to note that if problems occur, you must seek help from specialists. Any work performed on the gearbox should only be carried out in specialized workshops

For an overview of the Ugra model, see the following video.

Most popular model

The most popular among consumers is the walk-behind tractor from Kadvi - Ugra NMB-1. This device is equipped with various attachments, thanks to which there is an excellent opportunity to perform a huge range of work: mowing grass, plowing the ground, digging and planting potatoes, removing snow, transporting goods, etc. The machine also has two power take-off shafts. Due to them, the walk-behind tractor has versatility and can even be connected to a device such as a water pump.

The gearbox and gearbox deserve special attention. They consist of high-strength steel gears, while the clutch is made of cermet discs. This solution significantly increased the reliability of the entire structure and reduced the need to frequently repair walk-behind tractors. In total, the designers provide three gears for moving forward and one in reverse.

Model Kadvi MB 1D 6.0 hp.

Motoblock Kadvi MB 1D 6.0 hp is a multifunctional device that can be used in a country house, a household plot, a farm or in the housing and communal services sector to perform a variety of operations (transporting goods, cleaning, planting shrubs and trees, lawn care, mowing grass and others).

This model has proven itself well in the domestic market. In its class, Kadvi MB 1D 6.0 hp. is one of the most popular models. Powerful and reliable special equipment combines advanced technical solutions that provide important operational advantages.

Among the technical features of the model, the following should be highlighted:

• metal-ceramic clutch;
• the ability to install a large range of stationary units driven by a PTO and attachments;
• two power take-off shafts;
• compliance with strict European safety standards;
• the ability to adjust the steering column in two planes (horizontal and vertical);
• reinforced gearbox, specially designed for this model;
• the presence of a gear transmission with 4 speeds (2 front and 2 rear). Clutch type – belt.

Among other advantages of the walk-behind tractor, the presence of specialized devices that reduce engine vibration and noise should be highlighted. Pneumatic wheels and the ability to use a trolley make it possible to transform the equipment into a carrier of loads weighing up to 500 kg. The compact dimensions of the device make it easy to transport and make it incredibly maneuverable.

Kadvi MB 1D 6.0 HP can be used with a huge range of attachments, significantly increasing its functionality. The line of devices used with this walk-behind tractor includes:

• rotary snow blower;
• blade shovel;
• cleaning brush;
• transport trolley;
• harrow;
• plow;
• digger;
• mower;
• additional cutters;
• hiller;
• water pump;
• earth drill;
• lugs;
• woodworking attachment.

Installing a Lifan engine on a Ural walk-behind tractor

The factory equipment of Ural walk-behind tractors assumes the presence of a domestic engine. In some cases, the power and performance of such a motor is not enough, so there is a need to remodel the equipment. Equipping a Ural walk-behind tractor with a Lifan engine with your own hands is quite simple, but before starting work you need to decide for what purpose the equipment is being created and select a suitable engine.

Certain engines are suitable for walk-behind tractors of different types and weights, so it is important that the parameters are combined. The heavier the walk-behind tractor itself, the more powerful the engine should be. Models such as Lifan 170F (7 hp), 168F-2 (6.5 hp) are suitable for the Urals.

Minimal modifications are required to install them.

Models such as Lifan 170F (7 hp), 168F-2 (6.5 hp) are suitable for the Urals. Their installation requires minimal modification.

The main feature that distinguishes Chinese engines from domestic ones is the direction of shaft rotation: for Lifan it is to the left, for factory Ural engines it is to the right. For this reason, the walk-behind tractor is configured to rotate the shaft to the right; to install a new engine, it is necessary to change the position of the chain gear so that the pulley is on the opposite side, which allows it to rotate in the other direction.

After the gearbox is on the other side, the engine is installed in the standard way - the engine itself is bolted, the belts are placed on the pulleys, and their position is adjusted.

Price and care rules

The price of Ugra 1H series walk-behind tractors depends on the complete set, brand, type and power of the engine.

The cost of the newest cars ranges from 38-52 thousand rubles. So, a 1N1 walk-behind tractor with a DM-1M3 engine with 8 liters. With. costs 52.5 thousand rubles, model 1H10 with Robin Subaru with 7 liters. With. - 52 thousand rubles.

Price for a 1H7 agricultural machine with a 6.5 liter Lifan engine. With. corresponds to 38-39 thousand rubles, 1H2 with a Honda GX 200 engine with a power of 6.5 liters. With. — 49 thousand rubles.

Farmers often purchase walk-behind tractors on the secondary market. Their cost is 2-3 times cheaper, but when purchasing, you must take into account the condition of the model and the duration of operation of the machine.

After purchasing the Ugra walk-behind tractor, special attention is paid to its care. Care rules for motorcycle owners:

Care rules for motorcycle owners:

• The engine oil must be changed promptly after 30 hours of operation;
• transmission oil must be changed after 100 hours;
• parts must be cleaned of dust and dirt 2 times a week during constant operation of the unit;
• before starting the procedure, it is imperative to inspect all mechanisms; blades, knives and cutters are also checked;
• After purchasing the unit, be sure to run it in.

If problems or malfunctions occur, the walk-behind tractor can be repaired at a service center or independently. So, if noise occurs when working with the gearbox or fasteners become loose, you can try replacing worn elements and tightening bolts and nuts. If the gearshift lever has fallen out, then the problems may be not only in the loosening of the nut or the falling out of the cap supporting the mechanism, but also in the gearbox itself. The manufacturer recommends that such repair work be carried out in specialized workshops.

Proper care of the walk-behind tractor extends its service life by 2-2.5 times.

Engine Patriot

A distinctive feature of the units is that they have a separate lubrication system, which makes it possible to achieve high torque.
There is no need to add oil to the fuel mixture. Thanks to the use of light alloys, maneuverability increases. The technique is very light, but this allowed it to remain quite powerful. The walk-behind tractor is easy to operate regardless of the conditions.

Patriot engine characteristics:

• gasoline four-stroke engine;
• two forward and two reverse speeds;
• tank with a capacity of 3.6 liters;
• working volume – 198 cubic cm.

The tillage track is adjusted depending on the type of soil and crops.

But it is worth noting that the price of such an engine is much higher compared to other models.

Complete set and additional equipment

The presence of two power take-off shafts allows you to turn the Kadvi MB-90 into a multifunctional unit. Reviews from the owners of this equipment indicate that the domestic walk-behind tractor is in no way inferior, and in many ways superior to its foreign counterparts. The product has enormous potential due to the possibility of equipping it with a variety of options.

The following additional equipment is installed on Kadvi brand walk-behind tractors:

• Plow. Using this device, you can raise virgin soil, lay trenches for communications and foundations. Depending on the type of soil, a canopy consisting of one or more shares is used.
• Hiller. Used to create beds of various shapes and heights. At the same time, it removes weeds from the soil. Provides a better microclimate for plant roots.
• Mowers. The most effective are rotary mowers with one or two blades. In one pass, they mow a strip up to 130 cm wide. Strong knives are capable of cutting even small bushes. A trimmer is used to mow the lawns in the yard.
• Snow blowers. On the farm you can use rotary cleaners, mounted shovels and hard-bristled brushes. The equipment successfully copes not only with fresh snow, but also with dense snowdrifts.
• Wheel weights. They are used in cases where equipment operates with increased load to improve traction with the ground. To achieve a better effect, the wheels are replaced with ground hooks, the weight of which can reach 80 kg.
• Devices for planting seedlings and harvesting. When running a large farm, it is advisable to use potato planters and potato diggers. These devices make work much easier.
• Trailer devices. The functionality and performance of the walk-behind tractor is significantly increased through the use of cargo trailers and cargo-passenger trolleys. These devices are used when working in the field or for transporting various property around the yard and beyond.

An earth drill can be connected to the walk-behind tractor. It is used to make holes for supports and tree seedlings. In addition, the power take-off shaft is adapted to work with a water pump, electric generator and crusher. It is possible to install a blade for wood processing.

Basic equipment

According to the operating instructions, the Kadvi MB-90 walk-behind tractor was supplied complete with pneumatic wheels. The cutters were included in the kit. As with all walk-behind tractor models, the MB-90 has the following main working parts:

• bumper;
• wheels;
• steering column;
• differential lock lever;
• clutch;
• gear box;
• engine;
• power take-off gearbox;
• levers for engaging the PTO, reverse, gear shift, and gas.

Maintenance of the MB-90, as well as all its modifications, is carried out according to the standard scheme: after running-in, that is, 20 hours from the moment the walk-behind tractor is turned on and the start of operation, then every 100 hours of operation and before the season change.

To familiarize yourself with the maintenance standards, we recommend that you study the factory operating instructions for the MB-90 walk-behind tractor, as well as read other articles on walk-behind tractors of newer models on our website.

Description

The Kadvi MB-90 walk-behind tractor is one of the first developments of the Kaluga motor plant.
It belongs to the top models that sold well and deservedly received a reputation as one of the best and most durable Russian walk-behind tractors. In terms of technical characteristics, the unit is not inferior even to foreign analogues. It is sold with engines from the same manufacturer. Motoblock "Kadvi" MB-90

The scope of application of the Kadvi MB-90 walk-behind tractor is very wide. This is not only working with the soil, but also carrying out a whole range of work, in particular, transporting goods, mowing grass, digging potatoes, watering the garden (when a pump is connected). The engine power is sufficient to carry out all the most important agricultural operations.

"Kadvi" MB-90

The Kadvi MB90 walk-behind tractor is equipped with a gear reducer and a disc clutch. The center of gravity of this model and all its modifications is low, therefore the device has the correct weight distribution.

Among the tangible advantages of the MB-90 is the gearbox. The device fully functions in four forward and four reverse gears, while analogues close to the model in technical parameters can only operate in two gears, and adding two more is achieved by reversing the belt. This significantly slows down the work, but the Kadvi MB-90 is free from such difficulties.

Motoblock "Kadvi" MB-90

The transmission features full reverse and a bevel differential. When connecting attachments, you can choose the most optimal speed mode, because reliable operation is ensured by the gearbox directly through the power take-off shaft. The clutch is equipped with a special lock - it is always in the “on” state, and to change gears you just need to use the shift lever near the steering column.

The steering wheel is convenient because on the Kadvi MB90 it rotates 180 degrees. The steering wheel positions are fixed depending on the required height.

Engine for walk-behind tractor Neva MB-1

The popular domestic walk-behind tractor Neva MB-1 is in high demand due to its high torque, which allows the use of a wide range of attachments to operate the unit.

Another important advantage is the low fuel consumption of the Russian unit. However, the standard engines of the Neva MB-1 units had one significant drawback - low resistance to wear of the main mechanisms

Because of this, motors very quickly become unusable and require replacement.

Replacing the engine on the Neva MB-1 walk-behind tractor must be carried out using a motor that, in terms of its technical characteristics, will closely replicate the standard power unit of Russian equipment. For replacement purposes, it is best to choose the following models of imported and domestic engines:

• Forte F200G;
• Sadko GE200;
• Damask steel BT170F-L;
• Weima WM170F;
• Iron Angel E200 (Z);
• Centaur DVS-200D;
• Vityaz 178F.

Each such engine for the Neva walk-behind tractor will extend the life of the machine and perform a wide range of agricultural tasks. Having easy access to the main mechanisms of these engines simplifies their maintenance and repair.

Motoblock MB 90

The Neva MB-1 walk-behind tractor has been produced since 1984 and during this time has gained the trust of many users. It has been modernized and improved, but there are still working copies from the 90s of the last century.

The manufacturer of Neva walk-behind tractors is the Red October plant, St. Petersburg. This is a specialized enterprise for the production of motorcycle and agricultural equipment. The first Neva brand walk-behind tractor was released in 1984.

The walk-behind tractor is constantly being modernized and is still popular among buyers, as it has stood the test of time. The manufacturer has developed and equipped this equipment with a new Multi Agro gearbox with an increased number of gears.

The Neva MB1 MultiAGRO walk-behind tractor has 3 forward gears and 1 reverse gear. By rearranging the belt on a double-strand pulley, you can get another set of gears that also have a functional purpose. Thus, for each agricultural technical and economic operation it is possible to select the appropriate speed, thereby increasing the productivity of the work performed.

In addition, the MultiAGRO gearbox is characterized by an increased gear ratio, which improves the traction and grip qualities of the walk-behind tractor.

The gear shift lever is located on the steering wheel, which is convenient when using the MB 1 walk-behind tractor as a vehicle.

In the MB1-FS/MB1-FS Premium modification, the presence of an electric starter, which is powered by an installed battery and a generator on the engine, makes it easier to start it, and also makes it possible to use the headlight at night. Now, in order to start the device, it is not necessary to pull the manual starter; you can simply turn the ignition key.

Motoblock Neva MB-1 detailed technical specifications

Motor problems

Engines running on different types of fuel (gasoline or diesel) have different service life. For engines using diesel fuel, it is much larger, but it is gasoline units that are popular due to their lower cost and ease of operation and repair.

Typically, of all faults, two main types can be distinguished:

• startup problems;
• problems with smooth operation.

Problems in the fuel system

The first thing you need to do is check the spark plugs. If they are dry, this may mean that gasoline is not getting to the engine. The main reasons will be: lack of fuel, the supply valve was closed, the hole in the tank plug is clogged, unnecessary objects get into the fuel system.

For maintenance you should:

• refuel the walk-behind tractor;
• unscrew the fuel supply valve;
• clean the gas tank cap;
• remove all gasoline from the tank, having first removed the fuel valve, and wash it with clean fuel. Then blow out the jets in the carburetor using the fuel supply pump.

When the candles are left wet

The following malfunctions are identified:

1. The appearance of carbon deposits on the spark plugs. They should be cleaned with a rough surface and washed.
2. The gap between the electrodes has been increased or decreased. You need to adjust it to the required size.
3. Wiring insulation is damaged. It is usually replaced with a new one.
4. There is a ground short to the STOP button.
5. The ignition system starter is faulty.

The rubber carburetor seals may also become loose, causing air to be sucked in. It is necessary to tighten the bolts, spark plugs and inspect the gaskets between the cylinder and the spark plug head.

Another option for poor engine starting may be that the carburetor air damper does not close completely.

Candles in a walk-behind tractor should not be wet

If the compression is broken, it will also be difficult to start the engine. The reasons are: carbon deposits on the valves, the intake valve is deformed, or the piston rings are already worn out.

Problems during operation usually appear when the engine's node connections, subject to overload, fail, which leads to failures.

When the engine begins to pick up and slow down on its own, this is possible when the traction and the fastening of the levers are weakened. To eliminate this, simply adjust the control drive.

If the engine loses power, it means it has overheated. In this case, the engine may jam, which happens when the oil level in the crankcase is low, a nadir forms on the connecting rod head, or the oil squirter has become unusable.

Ural with ZiD engine

Small batches of motor blocks were equipped with a ZiD-4.5 brand power unit. The design of the engine is not much different from the UMP-5V. The crankshaft has a pulley and a sprocket to drive the chain. The pulley is located on the flywheel side, the chain drive is on the pinion side. The chain drive is used to control stationary installations. The engine is lubricated by splashing; oil is supplied by a plunger pump from a sump containing 1.5 liters of fluid.

A belt drive is used to transmit torque from the engine to the transmission. The belt for the walk-behind tractor has a size of 11201711 mm. The walk-behind tractor uses a 2-speed gearbox, the design and control of which are similar to machines with a UMZ-5V engine. The gearbox has 2 speeds, which reduce the rotation speed by 17 and 7 times, respectively. Switching speeds is done using a handle. Before starting to operate the engine unit, it is necessary to check the level and top up the transmission oil in the gearbox. The rated capacity of the crankcase is 1.5 liters.

The engine ignition system includes a magnetic circuit that ensures constant ignition timing. As wear occurs, the angle changes, resulting in unstable ignition. To adjust the ignition of the engine block, it is necessary to control the moment when the switch contacts open and the maximum gap between them. The test is performed by removing the flywheel by aligning the notch on the crankshaft with the notch on the base of the magnetic armature.

The power system includes a K16N or ZiD-12 carburetor and a fuel tank containing 8 liters of gasoline. Adjusting the carburetor walk-behind tractor allows you to ensure uniform engine operation and fuel consumption as stated by the factory. The adjustment is made with the engine warm by turning the idle speed screw and the throttle travel lock screw. In this way, the minimum idle speed is adjusted.

Specifications

The features of domestic Kadvi walk-behind tractors allow them to be successfully operated in difficult climatic and natural conditions.

• Steering can be done both vertically and horizontally.
• There is vibration protection.
• Lowering the center of gravity ensures a stable working position.
• Ease of changing speed gears is ensured using a special lever.
• It is possible to change speeds both in the direction of movement and against movement.
• The gearbox and gearbox are made of high-strength steel.
• The clutch consists of discs made of cermet. Such materials provide increased reliability and long service life.
• Compactness.
• Ease.
• Multifunctionality.
• Warranty up to 5 years.
• Long service life.

Which engine is better to put on a Cascade walk-behind tractor?

The internal combustion engines for the Cascade walk-behind tractor are all: gasoline, carburetor, single-cylinder, four-stroke, air-cooled. The motor is started using a pull cord. Operating the device will not cause much noise and requires an acceptable level of vibration.

At the moment, engines for the Cascade walk-behind tractor are not produced in Russia. Therefore, we have to turn to foreign manufacturers for help. But the parameters do not always match the unit. Due to the difference in seats and shaft diameter, you also have to buy additional fasteners. So, which engine is better to put on the Cascade walk-behind tractor?

The most common types of engine installed on the Cascade are:

• DM-68. This part is of good quality and most suitable for installation. It has an enlarged transmission, high power, a 3.3-liter fuel tank, four speeds - 2 forward and 2 reverse.
• BS 1/C. A very popular option. It is chosen by equipment owners, since the engine has increased power up to 6.5 horsepower, low noise level, and the ability to operate even at temperatures below zero.
• Vanguard OHV. The most powerful device (up to 7.5 hp), with a large fuel tank, which allows you to quickly and efficiently perform a variety of tasks.
• Honda GX-200. The most common species in Russia. A distinctive feature is low gasoline consumption and modest dimensions. Made in China. Its analog “Lifan 168 f-2” is also very popular due to its low price.

Lifan 168F-2 ignition circuit

The power unit has a conical shaft output; it differs from the base model only in the conical groove of the crankshaft toe, which ensures a more accurate and tight fit of the pulleys.

The installation itself will be completed in a few simple steps, which even a person who is far from the topic and has never dealt with something similar will be able to cope with:

• Removing the old motor. Usually done using ordinary open-end wrenches or heads. It is simply completely removed, having previously disconnected the throttle cables, if they are present. Also, before removal, you should reset the belt that transmits torque to the gearbox.
• Installing a new motor. This is done using the same fasteners, in this case if they match. In that case, no, then there is an option to recycle these fasteners yourself, by drilling holes or even welding additional iron plates, if necessary.

Engine repair

If there is a problem with the engine, repairs may require the use of spare parts. In addition, it is necessary to take into account the features of the motor installed on the unit

It is important to consider that, if desired, almost any repair can be done with your own hands if the necessary components are available, especially when it comes to minor breakdowns

In case of serious malfunctions, it is best to contact a service center to repair this equipment. And, as already mentioned, if the quality and reliability of the existing engine is no longer satisfactory, you can always make a replacement. This is interesting: choosing an engine for a Cascade walk-behind tractor. .

Modifications of MB90

Currently it produces a more expanded range of models of walk-behind tractors, both heavy and light, as well as motor-cultivators. The Kadvi MB90 model is no longer mass produced.

The MB-90 model appeared in the late 90s and immediately became popular. At that time, the model was available in several modifications:

• MB-90M;
• MB-90M1;
• MB-90M2;
• MB-90M3. Engine Vanguard 7.5 HP Engine MB Kadvi DM 1M3 engine Lifan 6.5 hp

All modifications, except for the MB-90M3, were produced with domestic Kaluga engines from Kadvi, differing slightly in the amount of horsepower. The MB-90M3 modification was equipped with a Chinese Vanguard 7.5 HP engine with 7.5 horsepower.

The lineup

Among modern Kadvi walk-behind tractors there are several popular models.

NMB-1 "Ugra"

The units are characterized by high power and safety. With their help, you can easily cultivate the land, mow grass, plant, dig potatoes, and clear snow debris. The presence of two power selection shafts allows you to connect additional devices that expand the possibilities of use.

The walk-behind tractor is equipped with a DM-1M2 engine, the power of which is 6.0/4.4 liters. With. /kW

There are modifications that are represented by models NMB-1N, NMB-1M1, NMB-1N1. They have the same power and a built-in DM-1MZ engine.

But there are also other modifications, for example, NMB-1M8, NMB-1N10, NMB-1M7. The engines in these models are different.

MB-1 "Oka"

This model is characterized by versatility and reasonable price. It can be used for agricultural work, transporting goods, carrying out public works, and cleaning roads throughout the year.

The walk-behind tractor allows the use of various trailed and mounted equipment. It has a reinforced gearbox. Operating the machine does not require special training. The unit is lightweight and compact.

There is a modification, which is represented by the model MB-1D1 (2) M1. It is equipped with a DM-1M1 engine with a power of 6.0/4.4 liters. With. /kW There are also modifications, for example, MB-1D1 (2) M6, MB-1D1 (2) M9, MB-1D1 (2) M15, which differ in engine type and power.

It should be noted that these designs were among the very first to be produced at the enterprise. They had sufficient reliability, quality, and efficiency.

The modern model is equipped with a gear reducer. With its help, it is possible to switch four speeds both forward and backward. The structure is used for plowing land, mowing grass, transporting heavy loads, watering, and removing snow.

The unit allows the use of additional attachments, which significantly expands the scope of application.

There are modifications of this model that differ in engine type and power. For example, the latest modification of the MB-90M3 is equipped with a powerful Vanguard engine with a power of 7.5 hp. With.

Engine Maintenance

To ensure high-quality operation of the Lifan motor for a walk-behind tractor, it is necessary to carry out periodic maintenance, which includes the following points:

1. Check the oil level, top up with a new one.
2. Cleaning and replacing the air filter.

Every 6 months you need to do the following:

1. Cleaning the sump.
2. Adjusting and replacing spark plugs.
3. Spark arrester treatment.

The following procedures are carried out annually:

1. Checking and adjusting the idle speed of the engine.
2. Adjustment of optimal valve clearances.
3. Complete oil change.
4. Cleaning the fuel tank.

The fuel line is checked every 2 years.

Adjustment of valves

Valve adjustment is a necessary procedure for engine maintenance. According to the regulations, it is carried out once a year and consists of setting the optimal clearances of the intake and exhaust valves. Their permissible value for each motor model is presented in the technical data sheet of the unit. For standard walk-behind tractors they have the following values:

• for the intake valve - 0.10-0.15 mm;
• for the exhaust valve - 0.15-0.20 mm.

The gaps are adjusted using standard feeler gauges of 0.10 mm, 0.15 mm, 0.20 mm.

With the correct settings of the intake and exhaust valves, the engine will operate without noise, knocking or jerking.

Review

Starting a review of the Kadvi MB 90 walk-behind tractor and its modifications, I would like to mention that these are the first agricultural devices that began to be produced at the KaDvi Kaluga Motor Plant in the late 90s. Now these modifications are no longer produced, however, at one time the Kadvi MB-90 line of walk-behind tractors was very popular among farmers and private landowners.

Motoblock Kadvi MB 90

The manufacturer installed engines of its own manufacture on the walk-behind tractor; they were highly reliable, but had relatively low productivity. Later, in order to increase the power of agricultural units, the manufacturer decided to switch to foreign engines of higher power, which was successfully reflected in the subsequent generations of walk-behind tractors (“Ugra” and “Oka”), which replaced the MB-90 series.

Owner reviews

Andrey, 52 years old:

Hello. MB-90 is my first walk-behind tractor, which helped out a new farmer in the dashing nineties. My small farm at that time consisted of 50 acres of land. I decided to grow potatoes for sale. I worked manually for the first year, then I took out a loan for a walk-behind tractor, and then a white streak began. Now I could plow, plant, collect, and so on alone, and besides, walk-behind tractors were a new thing back then - I helped beginners like myself. The motor, although rather weak, worked; sometimes there were problems with starting, but it was still better than manually. I paid off the loan in the first year. Then, after a while, I bought the land from my neighbors, expanded, and now I have 5 hectares of land. Now I’m working on a tractor, with my sons as my assistants. But I feel great gratitude to the MB-90 walk-behind tractor; in those years it helped me feed and put my family on its feet.

Vladimir, 48 years old:

I bought this unit for my dacha about 15 years ago - it’s compact, moderately heavy, fits in the trunk and all that. The car is not bad, it does the job, of course, it breaks down from time to time. The original engine lasted for 6 years, then, on the advice of friends, I installed Lifan - it is more powerful, newer, and more durable. Now the old man is still plowing, but more and more often he is sent for repairs. I’m looking for a replacement, I don’t know if modern Kaluga walk-behind tractors are as good as they used to be.

What kind of oil to pour into the Neva walk-behind tractor

Motor oil is important for the normal functioning of the engine of the Neva walk-behind tractor. In this case, the compliance of the oil with the instructions of the manufacturer of the agricultural implement plays a role. Typically, the choice of product depends on its viscosity and season. Fuel and lubricants are divided into:

1. Summer, or highly viscous.
2. Winter, or low-viscosity.
3. Universal for all seasons.

https://youtube.com/watch?v=NC1ES9vYo20

Changing the engine oil should take into account the advice of the walk-behind tractor manufacturer. These companies recommend using the following types of fuel and lubricants for their engines:

1. Laifan - for engines of this brand, summer oil SAE 30 is suitable, and in cold weather it is correct to take the universal product SAE 10W-30. Both types of these oils extend engine life and preserve engine components.
2. Subaru - this brand recommends SAE 10W-30 as the oil for its engines for summer work, and SAE 5W-30 oil for intensive use of the unit in cold weather.
3. Patriot - to lubricate these engines for the MB-1, MB-2 Neva walk-behind tractor, fuels and lubricants from the Bridge Stone brand of type 10W-30 are suitable, and this product is used in hot weather and cold weather.
4. Honda - in summer and winter, to lubricate the engines of this manufacturer, it is correct to use fuel and lubricants of the SAE 10W-30 brand.

By following the recommendations for the selection and use of fuels and lubricants, the farmer contributes to the high-quality operation of the power device, regardless of the weather and operating conditions.

When it is not clear which engine to put on the Neva walk-behind tractor, it is better to turn to experts. The specialist will provide detailed advice and tell you how to properly use the equipment for work on the ground.

Engine for walk-behind tractor Neva MB-2

To replace the power unit on the Neva MB-2 walk-behind tractor, not only domestic engines are suitable, but also imported engines with more, or, conversely, less power. Since the beginning of production, Neva MB-2 walk-behind tractors have been equipped with Russian DM-1K engines. The latter have proven themselves to be reliable and quite durable motors, the main disadvantage of which was considered to be their low working life.

Today, imported engines help solve this problem - they can be simply installed on the Neva MB-2 walk-behind tractor, they do not require special maintenance and have a long service life. Moreover, foreign-made engines will not cost the farmer much more than domestic engines. At the same time, not every motor is suitable for installation on a domestic Neva unit. The following models of domestic and imported engines will be optimal for installation on the Neva MB-2 walk-behind tractor:

• Vityaz 168F;
• Damask steel BT170F-L;
• Iron Angel E200 (Z);
• Centaur DVS-200B:
• Sadko GE 200;
• Sadko GE 210;
• Forte F200G.

Each such engine for the Neva MB-2 walk-behind tractor has an increased service life, high power and torque, as well as modest fuel consumption. Each of the listed engines includes enlarged working cylinders, the inner walls of which are coated with a special anti-corrosion substance, which significantly increases its service life.

Features and design

The Kaluga structure production plant is equipped with the most modern technological equipment to ensure the production of high-quality products. The products are distinguished by their versatility of use, economical operation, as well as reasonable prices for both the product itself and its spare parts.

The modern Kadvi walk-behind tractor is a structure equipped with mounted and trailed equipment. Using the unit, you can plow the ground, plant, harvest, move heavy loads, mow grass, and clear snow.

Due to the ability to switch power, the machine can be easily connected to various devices, for example, to a water pump.

The standard unit is represented by such elements as:

• cylinder installation;
• frame;
• wheels;
• steering wheel;
• running gear.

Features of Ugra Kadvi walk-behind tractors

Motoblocks "Ugra" Kadvi today are a whole line of machines

Particular attention should be paid to the NMB-1N7 model. The thing is that the model is multifunctional and at the same time universal and can be used both for work on a personal plot and for cultivating small fields

This unit, despite the fact that it has a significant weight of 85 kg, is easy to operate and can be operated even by a woman or an elderly person.

In addition, due to the ability to adjust the tilt and height of the steering wheel, an operator of any height will feel very comfortable when working with the machine. Without creating excessive vibration, a steering wheel of this design prevents overload of the hands and thus does not cause rapid fatigue in the operator. This Kadvi Ugra NMB walk-behind tractor has the following indicators:

• • Gas engine;
• • power 6.5hp;
• • volume of one-time fuel filling is 3 l 600 ml;
• • gear reducer of the Kadvi walk-behind tractor;
• • 3 forward gears;
• • 1 reverse gear;
• • maximum forward speed 8.5 km/h;
• • maximum reverse speed 2.2 km/h;
• • cultivation strip width is adjustable: from 40 to 70 cm;
• • unit width 1 m60cm;
• • length 60 cm;
• • height 1 m 23 cm;
• • ground clearance 17 cm.

Specifications

This model is equipped with a 7 HP engine. pp., which is enough even for processing neglected areas. According to the criteria of GOST 28523-90, this walk-behind tractor corresponds to the middle class in terms of weight. When folded, it can be transported in a passenger car. The assembled dimensions of the Ugra NMB-1N10 are 1600x600x1235 mm. This walk-behind tractor plows the ground to a depth of 30 cm. The manufacturer equips this equipment with 4 knives. If necessary, the basic set of cutters can be supplemented with a couple more blades. The diameter of the cutters is 31 cm.

This motor cultivator is equipped with a three-speed gearbox. The minimum and maximum speed of the Ugra NMB-1N10 walk-behind tractor is 2.7 and 6.4 km/h, respectively. For reverse movement, only 1 speed mode is provided. This model has a single-axle running system consisting of two pneumatic wheels with a diameter of 0.47 m. “Wings” are installed on the wheels to protect the operator’s feet. The steering system is adjustable in the vertical and horizontal plane. Thanks to the vibration damping system, using this walk-behind tractor is very comfortable.

"Ugra NMB-1N10" runs on gasoline. The tank capacity is 3.6 liters. Gasoline consumption does not exceed 2 liters per hour. This model has an ignition interlock system - just turn the red knob to stop the engine from running. There are no belts in the design of this motor cultivator - by abandoning them, the manufacturer has reduced the likelihood of parts breaking to a minimum.

Thanks to the wide soil coverage, this walk-behind tractor can be used to cultivate a large area with minimal time. The processing width with 6 blades reaches 900 mm. It is recommended to plow up to 20 acres of land in one start, so as not to overload the equipment. This model is equipped with a spring-loaded folding frame that allows you to park anywhere. The parts of this motor cultivator are very reliable, so there is no need for frequent servicing.

Motoblock Neva Engine Replacement In Chinese

Motoblocks Neva MB1 and MB2 are suitable for implementation in small areas of personal plots, summer cottages and also small farms. With fairly frequent use, at some point you will have to change the motor of the walk-behind tractor. As the proverb says in common parlance, nothing is endless.

You can change the engine on a walk-behind tractor not only to a model of the same brand it was supplied with, but also to another one, for example, a larger one, as it is also called, opposite the least power. With all this, the question arises - which engine to choose for the Neva walk-behind tractor? The first models of Neva walk-behind tractors in the original configuration were produced with an engine from a Russian manufacturer, type DM-1K. At this time, the new Neva walk-behind tractors are of course supplied with foreign-made engines from Robin-Subaru, BriggsStratton, Honda, etc.

Replacing the motor for the Neva walk-behind tractor with an imported one will make its service life longer, but such motors are more expensive than Russian ones. If you have to change the engine on a Neva walk-behind tractor, you need to know that such motors are durable, wear-resistant, and not cheap

It is important to remember what kind of products are made in Japan. It is also necessary to take into account whether the shift will be performed in artisanal conditions or at service stations

There are many replacement options, but the most common ones are:

• Installation of Robin-Subaru engine;
• The use of a Chinese motor for the Neva walk-behind tractor;
• Change to a Honda engine.

The replacement option is selected from the parameters of price-quality ratio, maintainability, climatic factor and other aspects.

• The strength of the case and several years of operation. Improved air cleaning system, forged steel crankshaft with bearings on both sides. The ignition coil is replaced by electric ignition, and sleeves cast from cast iron increase the service life of the engine.
• Very high reliability. Thanks to special cooling channels in the block and head, the oil does not overheat even under enormous loads. Also, using metal instead of plastic increases reliability.
• The engines are assembled in the Land of the Rising Sun in a factory where the highest degree of automation has been achieved, which allows the production of a lot of parts.

Part 1. Changing the engine of the Russian MB-1 walk-behind tractor to the Chinese Forte F-200G

• Low oil consumption. Due to the use of vertically located cylinders, all rubbing parts are uniformly lubricated, thereby achieving an unusually large torque on the shaft. The special design of the oil intake ring and good crankcase ventilation reduce oil consumption.
• Reduced noise due to the use of an aggressively fixed crankshaft and a specially shaped air filter, changing the cross-section of the piston and camshaft.
• Quick start. Due to the large bobbin in the starter, resistance is quickly overcome during starting, and automatic compression reduction for the operator simplifies the starting force.
• Highest environmental friendliness. Subaru engines do not comply with the European environmental requirements, which were introduced in 2002, and the Japanese exhaust gas requirements of 2003.
• Small-sized and lightweight design. Although the strength of the engines is maximum for their size, they are small in size and weight. This was achieved through the use of modern computer technologies. Small distances between components and assemblies have been achieved due to modern housing materials.

1. They have the highest power, from 1.5 to 12 hp.
2. They have the highest performance.
3. The engines of this office are equipped with a spray lubrication system, which will significantly increase the service life of the motor.
4. They have forced air cooling, which allows the engine to work longer. Thanks to this system, the engine does not overheat.
5. Starting the engine after idle time is quick and easy, thanks to automatic decompressors. The system starts manually and the start time does not depend on weather conditions;
6. Honda engines are reliable and economical, meeting environmental standards.

Changing the motor on a walk-behind tractor

• Comparatively low cost.
• Modern designs.
• Highest reliability.
• Universal for their own purposes.
• Availability of spare parts.

Chinese engines for walk-behind tractors have gained immense popularity due to their advantages. Depending on their purpose, the motors are equipped with additional equipment (gearboxes, starters and principles). In the engine production process, only the latest equipment is used. After purchasing such a motor, there is an option to use it immediately, without additional preparation. They are perfect for all types of walk-behind tractors, even homemade ones.

Source

Motoblock NMB-1 Kadvi. Description and operating experience. Design of the NMB-1 walk-behind tractor.

It's time for me to update my walk-behind tractor. Before that, I had an old MB-1 manufactured in the early 90s, which honestly worked out its life, cultivating the garden and transporting all sorts of cargo using a trailer.

And he even turned a concrete mixer! Despite the many shortcomings of its design, in general I did not have and do not have any special complaints about it (it still remains in service). And although something constantly had to be faked or repaired, these repairs were always carried out within a few hours and it was possible to make do with improvised materials. Those. I was quite satisfied with the reliability of the Kaluga walk-behind tractor MB-1, especially considering its price.

Therefore, I decided not to look for good from good and added a small detour to one of my trips with the aim of visiting Kaluga (as it is now called) and purchased a relatively new model of the NMB-1 walk-behind tractor there. (By the way, the old model MB-1 is still in production there, and has undergone quite a serious modernization).

This fall, I managed to work a little on the HMB-1 walk-behind tractor and I want to share my impressions with readers who may be planning to buy a walk-behind tractor and are experiencing the agony of choosing “how and which walk-behind tractor to choose.” I will describe it in comparison with the old model of the MB-1 walk-behind tractor. Moreover, it is still produced by Kadvi.

The photo shows a general view of the HMB-1 walk-behind tractor. As you can see, it differs quite a lot from the MB-1. Although the engine itself remained practically the same, and even the gas tank was the same, the power system (carburetor, air filter) and muffler were radically updated. Subjectively, the new walk-behind tractor is much quieter.

The fundamental difference between the HMB-1 and the MB-1 is the appearance of a 4-speed gearbox. 3 speeds forward, 1 reverse. This required turning the engine 90 degrees relative to the wheel axis.

Also, instead of a chain gearbox, a gear with a transmission shaft is installed on the walk-behind tractor.

Well, let's take things in order.

Protective wings also appeared over wheels or cultivators. Obviously, their purpose is to protect the worker’s legs from injuries during cultivation and from dirt when transporting the cart. Although I don’t quite understand how, holding the handles of the walk-behind tractor, you can reach these same cultivators with your feet. But they actually interfere with work. Although I’m probably just used to controlling the cultivation process when cultivating the soil. The good thing is that the wings are fairly easy to remove. They are fastened with 4 nuts each and removed - installed in 5 minutes.

In front of the walk-behind tractor there is a folding frame - a support on a spring. It provides quite comfortable parking. Moreover, it is removed almost “automatically”. It is enough to start moving forward, tilt the walk-behind tractor slightly and the frame itself snaps into the “stowed” state. I, not accustomed to such a service on the MB-1, at first always forgot about this frame and looked around the walk-behind tractor in fear - “what did that click there?”

On the beam to which the walk-behind tractor steering wheel is attached, a box appeared for all sorts of small items. A trifle, but nice. You can also keep spare spark plugs and key sockets there.

The mounting of the steering handles on the walk-behind tractor has changed radically. Now the range of adjustments and the angle of the steering wheel and its rotation is very large and can be adjusted to suit you very quickly. This is a very important quality, if only because the power take-off shafts for attachments are located behind the gearbox and when using, for example, a mower, it will be necessary to move in reverse. In this case, the steering wheel turns 180 degrees and the mower is in front in the direction of travel (as it should be), and the worker is behind. Although the walk-behind tractor itself moves in reverse. This “push-pull” scheme is very progressive and opens up good opportunities for creative people in terms of designing additional equipment for the walk-behind tractor. On the left handle are the forward clutch handles and the ignition lock. The use of a gearbox gave rise (intentionally or accidentally) to the motorcycle clutch principle. Compared to the MB-1 walk-behind tractor, it’s exactly the opposite. There, in order to start moving, you had to PRESS the clutch handle to the steering wheel. And it was logical. If for some reason a person leaves the steering wheel, the walk-behind tractor stops moving (and turning the wheels or cultivators), but the engine itself does not stall. Everything is different in the HMB-1 walk-behind tractor. In order to move off, in addition to engaging the gear, you need to RELEASE the clutch handle (like on a motorcycle). If this is your first walk-behind tractor, or you have a motorcycle, this will not cause any discomfort. I, who was accustomed to the old scheme, had to relearn. Another control feature is the ignition interlock. (Red pen). If you leave it, the engine will stall. In order to somehow ensure the operation of the engine, for example, in a standing position of the walk-behind tractor, you have to perform a whole list of operations. For example, you need to clean cultivators from twisted grass or plant roots. The most ordinary operation in which the walk-behind tractor must stand, but the engine must run. Just a minute. Don’t pull the starter every time... On the old walk-behind tractor, you just had to drop the steering wheel and the walk-behind tractor would stop. On the HMB-1, you must first depress the clutch (the walk-behind tractor stops), switch the gearbox to neutral, and secure the clutch and ignition handle with a special plastic lock (I wonder how long it will last). Perhaps skill is required, perhaps something has been overdone... At least, the master of the Kadvi service center, who carried out the pre-sale preparation and test drive and testing of the walk-behind tractor, advised me to install a toggle switch that blocks the operation of the engine immobilizer. Obviously, I’m not the only one who noticed this problem. But this is an outright mistake, as they say. An agricultural machine, in general, the work is not at all in sterile conditions, and the ignition interlock wires are so flimsy and like iron. It will fray, break, get wet - and it will fall into the ground. You'll get tired of looking for a reason. It will be necessary to either put it in a serious cambric, or simply replace it by installing that same notorious toggle switch. It’s strange why Kadvi didn’t protect the wires during production? Did you regret half a meter of PVC pipe? Or does it leave room for creativity? The clutch on the new walk-behind tractor is made in a cable version. In the previous model, metal rods acted as clutch rods. The thing is not killable in principle. In field and dusty conditions, the cable can easily swallow this very dust and become completely clogged. I'll have to come up with some covers for the ends and lubricate it more often.

Clutch adjustment is quite simple. Loosened the bolt, tightened the cable, tightened the bolt.

By the way, the HMB-1 walk-behind tractor has two clutches. On the left handle there is a “general” clutch that is used when moving forward. But on the right handle there is another clutch that must be used when moving backwards. Let me remind you that on the old walk-behind tractor there was simply a “backward” clutch handle. The speeds were on their own, and the forward-backward handles were on their own. Here, in addition to engaging the reverse gearbox, you also need to work with both hands (both clutches).

On the right handle there is also a gas lever. Unlike the previous walk-behind tractor, it can be controlled using the thumb of your right hand.

In my opinion, the layout of the throttle cable and fuel line was not entirely successful. Obviously this is due to the fact that the walk-behind tractor has the ability to drive backwards, which is why all the cables are very long. Because of this, they seem to entangle the walk-behind tractor and may get in the way. Apparently, you will have to make several clamps so that the cables are positioned more neatly.

Given my experience with an old walk-behind tractor, I installed a simple fuel filter on the gas line. The fuel line also hangs in a suspended state, which is not good. Although it does not touch any hot parts in this engine and gas tank arrangement, it should be prevented from possibly jumping off the gas tank or carburetor.

The new carburetor design deserves a separate story. The old model used a primitive needle carburetor, which was replaced with a more advanced float carburetor in the late 90s. But since, as you understand, there is no fuel pump on the walk-behind tractor, the procedure for the first start (or after the walk-behind tractor has been standing for a long time) is quite interesting.

Having turned the air damper (pos. 1) to the “start” position (i.e., severely limiting the flow of air into the carburetor in order to enrich the mixture), you need to use a pump (pos. 2) to pump gasoline into the carburetor until pressed to the small hole (pos. 3) the finger will not be moistened with gasoline. After which you can pull the trigger handle. Progress, to be sure, is obvious.

In the future, of course, there is no need to perform this procedure if there is gasoline in the carburetor.

Although, it must be said, the high location of the carburetor has its advantages. This should significantly reduce its contamination. And also make it easier to warm up when starting in cold weather. As you know, starting walk-behind tractors at subzero temperatures is quite problematic. And the manufacturer recommends first placing the walk-behind tractor in a warm room. And this is not always possible. I was able to start the walk-behind tractor by first blowing (and warming) its carburetor using a hand-held heat gun for several minutes at a temperature of 5 - 10 degrees below zero. The gearbox of the HMB-1 walk-behind tractor is located directly above the axis of the walk-behind tractor, and the engine is strongly shifted forward. Although the designers tried to balance the walk-behind tractor so that it would not tilt in one direction or another, they were not entirely successful. The walk-behind tractor is clearly nodding off, although not much. However, this has virtually no effect on work.

Gear shifting is done using a handle - a “poker”. Switching, of course, is not automotive (in terms of clarity), but quite tolerable. The service center mechanic especially drew my attention to the constant monitoring of the fastening of this very poker and the gearbox lever itself. If for some reason the fastening bolt unscrews and the gearbox lever rotates 180 degrees along its axis, consider the box to be under the bulkhead. So I jump out of the drawstrings from their nests and it’s impossible to catch them without bulkheading...” So you’ll have to carefully monitor the device.

The box has a wet clutch and a separate lubrication system. Accordingly, you will have to monitor the oil level in the box and change it as needed.

The power take-off shafts are located at the rear of the box. In the previous model of the walk-behind tractor there was simply a power take-off pulley standing directly on the engine shaft. The primitive method of power take-off had its advantages. It was enough to throw any rubber belt on the pulley - and you're done, everything spins.

On the HMB-1 walk-behind tractor, the shafts look like gears. Of course, it is very difficult to find something suitable for them, except for factory equipment. It’s good that when purchasing, I paid special attention to this and bought a pair of gears that fit these shafts. I’ll have to do a little Kulibino work to make a pulley for the “rubber” drive of the homemade attachments I already have.

By the way, there are two power take-off shafts. One rotates at the speed of the selected gear, and the other rotates in reverse gear. This significantly expands the possibilities of using attachments driven by a walk-behind tractor.

Another striking difference between the new walk-behind tractor and the old one is the fundamental change in the method of installing wheels or cultivators on the walk-behind tractor axle. An old walk-behind tractor has two axle shafts sticking out of the gearbox, onto which either wheels or cultivators are mounted using special extensions. Fixation occurs using thick cotter pins. It is quite reliable and simple, and changing from wheels to cultivators and back takes place in a couple of minutes. I tilted the walk-behind tractor so that one side hung out, pulled out the cotter pin with pliers, removed the wheel, put on the cultivator, and inserted the cotter pin. The same operation with the other side.

On HMB-1 everything is radically different. Firstly, the axis of the walk-behind tractor is hollow. Those. It is a pipe, albeit with a hexagon at the end. (by the way, it is the same size as the head of a 24 key). Wheel axles and cultivator axles are also hollow. And they are fastened to the axis of the walk-behind tractor using a long pin - a tie, with threads at the ends.

On the one hand, this makes it very difficult to quickly change wheels on cultivators. Here the trick with the tilt must be carried out very carefully, since if on an old walk-behind tractor when replacing one side, the other was tightly fixed. Then, when changing, neither side is fixed until the pin is inserted and tightened - the tie. Therefore, until the replacement skill appears, it is better to use some kind of support for the gearbox. However, the skill comes quite quickly.

On the other hand, this method of attaching wheels opens up great prospects for creativity. Now the axis can be almost any piece of pipe, into one end of which a 24mm wrench head is welded. You can use any tie rod. Threaded studs with a length of 2 meters are even available for sale. You can make any asymmetrical arrangement of the walk-behind tractor relative to the axis of movement, which is not so unimportant when processing some crops. You can make special wheels that, for example, will form beds themselves or hill up potatoes without additional attachments. By installing the walk-behind tractor on any “table” and securing it, you can use the wheel axles as a power take-off shaft with a huge deceleration coefficient and a monstrous moment of force on the shaft. Etc. and so on.

General impressions of the HMB-1 walk-behind tractor manufactured by Kadvi.

In general, the walk-behind tractor has become almost an order of magnitude more complex and functional. At the very least, it has enormous potential, especially in terms of the use of additional weapons. An engine that has been tested for reliability for a couple of decades, practically. In general, it is a fairly simple and maintainable design.

But the complication of the walk-behind tractor obviously led to the complication of its maintenance. And perhaps to the capriciousness of individual units. I pointed out some obvious shortcomings (however, easily removable on your own). And then we’ll live, operate, maintain, and we’ll see.

Konstantin Timoshenko based on materials from the site www.delaysam.ru

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Attachments

The reason for the great demand for walk-behind tractors of the “Kadvi” line was caused not only by the reliability of the unit, but also by a large assortment of attachments and trailed equipment for it. These attachments significantly expanded the functionality of the walk-behind tractor, making agricultural work easier for both the farmer and the summer resident. We list the attachments produced for the “Kadvi” MB-90 series of walk-behind tractors:

1. Cultivator cutters.
2. Plows.
3. Mowers.
4. Snow removal equipment (brush, blade, snow thrower).
5. Harrows.
6. Pumps.
7. Hillers.
8. Potato planters.
9. Root diggers.
10. Lug wheels.
11. Pneumatic wheels.
12. Weighting loads.
13. Adapters.
14. Trailer carts.
15. Coupling mechanisms.
16. Axle extensions, etc.

We invite you to watch a video on how to set up a plow on a Kadvi walk-behind tractor:

Advantages of Ugra NMB-1N7

Let's take a closer look at the main advantages of this model:

• reliability and durability, confirmed by good reviews from owners;
• the presence of two power take-off shafts (this feature allows you to connect various mounted and trailed equipment to the walk-behind tractor, including rarely used ones, for example, a feed crusher, pump, mower);
• powerful Chinese factory-made engine - Lifan (Lifan 168F-2A, 6.5 hp);
• moderate noise level;
• easy starting from a place;
• instant shutdown function when switching to “STOP” mode;
• reduction gear;
• gearbox;
• compliance of this model and the entire Ugra model line with European safety standards;
• Ugra walk-behind tractors work with a wide range of additional equipment, both trailed and mounted. Installation of foreign attachments is allowed if the dimensions of the fastenings match and the necessary couplings are available;
• clutch material - cermet discs;
• high traction force (as a result - higher power of the walk-behind tractor when driving with a load or on dense soil);
• there are no drive V-belts, which simplifies maintenance;
• four operating modes (3 forward gears, 1 reverse);
• the steering wheel is adjustable both horizontally and vertically;
• the walk-behind tractor can be deployed almost without leaving the spot (plants in adjacent rows are less damaged);
• the steering wheel is equipped with vibration protection;
• The weight of the walk-behind tractor with the cultivator is 91 kg, with pneumatic wheels - 90 kg. (medium weight, not the heaviest model - ease of control, maneuverability). With metal wheels, the traction force increases to 130 kg;
• pneumatic wheels give the walk-behind tractor more smoothness when moving (the force of the walk-behind tractor on such wheels reaches 100 kg);
• The manufacturer provides a guarantee for this model for 18 months.

Motoblock Ugra NMB-1N7
Motoblock Ugra NMB-1N7 can perform work in the speed range from 3.5 km/h to 8.52 km/h. In reverse, the car speed is 2.2 km/h. The maximum weight for transporting cargo with a walk-behind tractor, taking into account the fully loaded trolley, is 350 kg.

If transportation is necessary, the Ugra NMB-1N7 walk-behind tractor can be disassembled and transported in the trunk of a passenger car. The cost of the factory model of this unit, according to the website of the Kaluga Motor Plant, is 39,600 rubles. You can check the relevance of prices with representatives of Kadvi brand stores or by calling the manufacturing plant.

The Ugra NMB-1N7 walk-behind tractor is supplied complete with two cultivator cutters, two pneumatic wheels, a hitch, a coulter, and a bracket for it.

Review of the Ugra NMB-1N7 walk-behind tractor with adapter:

Running in the walk-behind tractor

Such a wide range of additional equipment and 2 power take-off shafts make the walk-behind tractor one of the most versatile in its class. At the same time, it does not require any special maintenance. It is enough to carry out periodic inspections and perform a one-time break-in, which is mandatory and helps to extend the service life of the equipment. It is performed in several stages:

1. Checking oil and gasoline levels. If necessary, top up to the required level.
2. First start of the engine and warming it up. During this phase, the engine operation should be monitored.
3. Increase speed and work in different gears.
4. Operating the walk-behind tractor at medium power. Do not overload the device for a long time.

Maintenance

Maintenance of the Kadvi walk-behind tractor includes several stages:

1. Change of oil:
   10W40 engine oil is recommended for the power plant; it must be changed every 20 hours of operation;
2. for the transmission it is better to use transmission oils such as T85W90, TAD 17, replacement is made every 100 operating hours.
3. Daily care:
   work before starting operation (checking oil and fuel, reliability of fasteners and pressure in pneumatic wheels):
4. work after completion of operation (cleaning from dirt, washing and drying, lubrication).
5. Preservation for a period of long-term inactivity (with mandatory draining of working fluids).
6. Scheduled technical inspections.