When using a Neva walk-behind tractor for a long time, it may be necessary to change the engine when it breaks down. Replacing the engine on a walk-behind tractor can be done not only with a mechanism of the same brand with which it was made, but also with a motor that has more or less power. Let's look at how to install the Neva walk-behind tractor engine.
Differences
The Neva MB 1 walk-behind tractor, in demand among summer residents and farmers, is not difficult to operate or maintain. Thanks to its compactness and low weight, agricultural equipment is distinguished by maneuverability and, due to large pneumatic wheels, maximum maneuverability. In agricultural applications, Neva MB 1 walk-behind tractors are used for:
- Plowing.
- Loosening.
- Harrowing.
- Hilling up.
- Planting tubers.
- Harvesting.
If you wish, you can put a small trailer on the model, allowing you to transport even half a ton of cargo. The technology was able to achieve such versatility due to the high power and endurance of the motor. The model is equipped with various engines - it all depends on the year of manufacture and the purpose of the walk-behind equipment.
Note! The standard configuration of the agricultural unit includes a gasoline powered motor, model DM-1. This is a powerful 4-stroke internal combustion engine with a 25 mm output shaft that rotates counterclockwise.
The engine consists of 1 chrome cylinder, the diameter of which is 76 mm. Piston stroke range 70 mm. The engine for the Neva MB 1 walk-behind tractor is equipped with a float-type direct-flow carburetor, which is necessary to saturate the fuel with air and stabilize the engine crankshaft speed in different operating modes. To purify the sucked in oxygen, the technical device includes an air filter element made of foam rubber.
We also advise you to pay attention to the excellent amber fertilizer for plants.
The motor to the Neva walk-behind tractor is turned on using a built-in manual starter. Electric ignition is provided. To normalize the operating temperature, the walk-behind equipment has an air cooling system that sucks in oxygen due to the functioning of centrifugal forces. Those. The characteristics of the DM-1 motor are as follows:
- Volume – 316 cubic cm.
- Power – 5 l/s.
- Rotation speed – 3 thousand rpm.
- Torque – 13.8 Nm.
- Tank for 4 liters of fuel.
- 1.3 liter oil sump.
- Fuel consumption under average loads is 2 l/h.
The motor is compact. The engine length is 400, width – 450 and height – 470 mm. Weight – 28 kg.
The MB 2 walk-behind tractor is a modernized model of the MB 1 walk-behind tractor. It is even more reliable and durable. At the same time, the manufacturer managed to reduce the consumption of fuel when operating the walk-behind tractor at maximum load. Like the MB 1 model, the best version MB 2 is equipped with different 1-cylinder 4-stroke engines with carburetors and manual start, retractable cord. Each power device has an air cooling system that operates under the influence of centrifugal forces.
The engine for the Neva MB-2 walk-behind tractor is mounted to the load-bearing frame using reinforced fasteners. In the factory model of the engine, a three-groove pulley is responsible for transmitting the rotation created by the engine to the gearbox or suspended equipment. For normal operation of engine speed during starting, the agricultural walk-behind tractor has an air damper. The model of the Neva MB 2 walk-behind tractor is an MB 2K machine, it has an engine from an internal combustion engine DM 1K.
On a note!
The base crankshaft of this farm unit is located horizontally, and the factory valves are located on top of the engine. The working volume of the internal combustion engine is 317 cubic meters. cm, and its maximum power is 6.5 liters. With.
Each engine for the Neva MB 2 walk-behind tractor meets certain parameters. These are presences:
- A ball bearing built into the base supports of the crankshaft - it is necessary to stabilize the vibration load of the engine and ensure its smoothest operation under the highest loads.
- Basic automatic decompressor.
- An aluminum block suitable for repairing a standard cast iron liner - this allows you to increase the service life of the liner.
- Reliable air filter element made of foam rubber, with 2 levels of purification.
- Reduced noise levels and modest fuel consumption were achieved thanks to the location of the valves at the top of the engine.
- A modernized ignition system that makes it possible to start the engine without problems in difficult weather.
Another important feature of the motors is their factory protection from heat, dust and pollution. Thanks to this, Neva MB 2 walk-behind tractors are better suited for implementing almost any complexity of tasks. Before use, you should read the operating instructions.
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.
What does replacing the engine on a Neva mb1 or mb2 motor cultivator give?
You can change the motor on Neva walk-behind tractors not only to a version of the brand with which it was made, but also to a different one, for example, more or less powerful. At the same time, you need to know which motor to choose for the Neva walk-behind tractor. In the starting configuration, models with a DM 1K engine were produced. Updated Neva walk-behind tractors can be equipped with foreign engines from the following brands:
- Robin Subaru.
- Bridgestone.
- Honda.
Replacing the engine on the Neva MB-2 walk-behind tractor with a foreign one will increase the service life, but such models are the most expensive. Therefore, if you need to replace the engine on a Neva walk-behind tractor, you need to understand that such motors are durable and wear-resistant, but their price is higher. It is important to know what alternatives there are to engines created in Japan. They take into account whether the motor will be replaced independently or at a service station. There are a large number of replacement options. The replacement option is selected based on the symbiosis of price + quality, suitability for repair, weather conditions and other factors. You can seek advice from an expert.
What kind of oil should I put in the Neva walk-behind tractor?
When servicing agricultural tools and units, it is important to choose high-quality materials, especially when it comes to a process such as changing the oil.
When choosing an oil, it is important to remember that it must be intended specifically for the engine. There are several types:
- For 2-pin motors.
- For 4-pin motors.
Both the first and second types of oils are divided into two types according to their composition:
- Semi-synthetic.
- Synthetic or mineral.
Depending on the season when the walk-behind tractor is used, one of the types of oils is used. So, for example, semi-synthetic oils cannot be used in winter, as synthetic ones are used at this time of year. Conversely, mineral oils are used in the summer, while synthetic oils are best not used.
You can see how to fill the gearbox with oil:
Review of manufacturing companies
The engine is the heart of the Neva walk-behind tractor. They differ in technical characteristics, as well as in the manufacturer and installation method. To understand how to choose a motor, it is necessary, first of all, to clearly define your goals, and secondly, to find out the basic technical details. characteristics of each Niva option, their differences.
Lifan (China)
This line of motors is considered one of the most economical, but their level of wear resistance is low. Such a motor cannot be considered a poor quality Chinese product. Many summer residents buy Lifan engines and use them for many years. Gardeners note the similarity of the engine with the Honda brand product. If you need to change the “native” engine on a Niva, then Lifan is a rational solution. The advantage of such engines is their fashionable design and simple controls. In addition, the farmer does not have problems with repair work.
On a note!
The manufacturer always supplies spare parts to the market, so there is no need to search and wait months for components.
The collection of Lifan motors is impressive. But we can highlight the best models, according to our compatriots:
- 168F-2. This is a 1-cylinder engine with a horizontal crankshaft. Runs on gasoline.
- The 160F gasoline engine is more powerful (up to 4.3 kW) and at the same time economical in fuel consumption.
- The 170F motor is suitable if you need an engine for a 4-stroke walk-behind tractor on the Neva. There is a horizontal crankshaft here, and an air cooler is also included.
- Engine for walk-behind tractor 2V177F. Cylindrical internal combustion engine. It is considered one of the top characteristics of the Lifan brand.
Motors for Neva walk-behind tractors adapt to the climate in different regions, so rain or wet snow will not interfere with the task.
Briggs and Stratton (Japan)
Another manufacturer of agricultural tools is the Briggs and Stratton brand. Their engines are more powerful than those from China, therefore they are suitable for heavy agricultural manipulations. They are manufactured to the same standards and in the same production facility as Mitsubishi cars. Therefore, they have an impressive service life (4-5 thousand hours) with proper care. Also, all models have a large margin of strength and wear resistance.
One of the collections that has received particular attention among farmers is Vanguard. What makes it different is ease of start-up and a large muffler that guarantees silent operation. Such engines automatically monitor the oil level and will give a signal if it needs to be refilled. Technical characteristics of Vanguard series engines:
- Tank volume up to 4 liters.
- Weight approximately 4 kg.
- Cylindrical sleeve made of cast iron.
- Operates on motor oil.
- Working volume – 110 cubic cm.
- Power – up to 6.5 l/s.
The manufacturer provides a warranty for a certain period, but the ignition coil in the engine receives a lifetime warranty, which confirms the reliability of the technical device.
Yamaha (Japan)
This manufacturer is primarily known as the creator of motorcycles. However, this is not the only equipment; they also make engines for motor cultivators. This high-end engine is designed for very heavy agricultural work. Its power is 10 horses.
Note!
The motors are equipped with a gearbox with powerful traction. The working depth of the cutters is about 360 mm, which makes it possible to quickly plow or hill up the soil.
The control is 6-speed, there is a wheel release and reverse mode. Yes, the engine may seem expensive, but the price will really meet any farmer’s expectations and will more than pay for itself during operation.
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.
Terms of use
The basis is to buy the right engine and see how it is installed on the walk-behind tractor. And also follow the instructions correctly and take care of the engine while it is running. The first thing you need to do before purchasing the product is to get advice from a specialist about the features of using the unit. It is important to carefully read the installation and operating instructions so as not to make mistakes during operation. It is necessary to systematically carry out preventive maintenance - change the oil, clean components.
When it is clear that the engine is not functioning stably, contact a service center for help. The guarantee document will be useful. There are many reasons for breakdowns, so if you don’t have repair skills, it’s best not to fix it yourself, so as not to worsen the situation. A professional will definitely find the reason, determine whether the oil seal on the crankshaft needs to be replaced, whether to use a different fuel, or whether the internal wire needs to be replaced.
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.
| Gearbox oil: | T85W90 or TAD 17 |
| Engine oil: | machine oil 10W40 from any manufacturer |
| Fuel: | gasoline AI-80, AI-92 |
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.
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.
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:
- Checking oil and gasoline levels. If necessary, top up to the required level.
- First start of the engine and warming it up. During this phase, the engine operation should be monitored.
- Increase speed and work in different gears.
- Operating the walk-behind tractor at medium power. Do not overload the device for a long time.
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:
- Cultivator cutters.
- Plows.
- Mowers.
- Snow removal equipment (brush, blade, snow thrower).
- Harrows.
- Pumps.
- Hillers.
- Potato planters.
- Root diggers.
- Lug wheels.
- Pneumatic wheels.
- Weighting loads.
- Adapters.
- Trailer carts.
- Coupling mechanisms.
- Axle extensions, etc.
We invite you to watch a video on how to set up a plow on a Kadvi walk-behind tractor:
Fast passage
Cultivator Mole
Tarpan
Another modern horizontal shaft cultivator
Walk-behind tractor
Neva
With foreign engine (Lifan, Subaru, Briggs & Stratton, Kasei)
With Russian (Soviet) engine
Cascade
With a foreign engine (Briggs & Stratton, Honda, Lifan) - the same as the Neva with a foreign engine
With a Russian (Soviet) engine - the same as the Neva with a domestic engine
A beam with a Russian (Soviet) engine is the same as the Neva with a domestic engine
Oka with a foreign engine (Lifan, Robin Subaru, Honda, Briggs & Stratton) - the same as the Neva with a foreign engine
Ural
MTZ (Soviet engine)
Agro (Agros)
Another modern walk-behind tractor
Belt clutch (chain gear)
Disc clutch (gear reducer)
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:
- Check the oil level, top up with a new one.
- Cleaning and replacing the air filter.
Every 6 months you need to do the following:
- Cleaning the sump.
- Adjusting and replacing spark plugs.
- Spark arrester treatment.
The following procedures are carried out annually:
- Checking and adjusting the idle speed of the engine.
- Adjustment of optimal valve clearances.
- Complete oil change.
- 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.
