Motoblock beam mb 1 repair instructions

Description

Luch walk-behind tractors have come a long way from their creation to the present day.
Initially, the manufacturer of these walk-behind tractors was the Perm Motors OJSC enterprise, which in the 90s became part of the Perm engine-building complex. The units are well-deservedly popular among domestic farmers and have a reputation as powerful, productive, fault-resistant devices with varying capacities. Each owner can choose a walk-behind tractor model based on the site, scope of work, and purpose.

Features of the Luch walk-behind tractors are as follows:

affordable price and high build quality;
attachments suitable for many other domestic and Chinese models;
endurance, possibility of use in any season;
ability to work on any type of fuel (gasoline AI-92, AI-76, AI-82 and other types of gasoline);
almost complete absence of bad reviews about walk-behind tractors (among the positive reviews there are many mentions of endurance, good assembly, reliability and power of the device).

Available Luch models - engine types, power

The model range of Luch walk-behind tractors is represented by the following positions:

Luch MB-1 (power 5 hp, Kadvi 168F-2A engine);
Luch MB 5040 (a series of walk-behind tractors with engines DM51, 52, 53 and 54, had an easy start function and a forced lubrication system, the power of walk-behind tractors in this series was 5 hp, in fact 5040 was a more advanced version of MB-1);
Luch MB 5141 (engine DM51, power 5 hp, a model that has not become popular, is now represented mainly by used models, new walk-behind tractors of this series are not produced).

Of all the indicated representatives of a number of walk-behind tractors, only the “Luch” MB-1 is produced for mass consumption.

The design features of the Luch walk-behind tractors are generally similar, the units are similar to each other, in different series the shape of the fuel tank can only change, for example, in the MB 5040 the tank is square, located closer to the engine.

Ural with a Chinese engine

Many owners of Ural motor units do not have enough power from a conventional power unit. Instead, Chinese engines or other imported engines are often used. The Chinese engine is installed on a standard frame through additional cross members. The crosspieces are attached to the frame by welding or bolts. Imported power supplies have increased motor speed, so you need to use homemade pulleys in the clutch.

The increased power of the power unit expands the possibilities of do-it-yourself modification. The equipment is capable of working in winter with an installed rotary snow blower.

Attachment overview

The popularity of all Luch modifications is associated, among other advantages, with their aggregation with a large number of attachments. It is also convenient for owners that the walk-behind tractor can work with attachments from other devices, such as “Neva”, “Ugra”, “Oka”, “Favorite”, “Viking”, “Patriot”, “Mole” and others.

Almost any domestic new or old Soviet walk-behind tractor can share the attachment with Luch, and it will work. Further in the review, we will study in more detail the types of equipment for the Luch walk-behind tractor, and watch a video of the operation of the units.

Milling cutters

The classic type of cutters for the Luch walk-behind tractor is sickle-shaped. Assembly and installation on the device must be done using fabric mittens or gloves. When installing and starting to work with cutters, the owner must make sure that they are installed and secured correctly.

More details about the installation of cutters can be found in the instructions for the walk-behind tractor. It is allowed to use crow's foot cutters, as well as partial installation to narrow the cultivation strip.

Adapter, trailer

The Luch walk-behind tractor has enough power to connect a cart, trailer and even an adapter. The adapter differs from the cart by having a seat for the owner. This is convenient for transporting goods, transporting crops and moving around the site. Recommended types of trolleys: TM-300, TM-500.

Trailers for the Luch walk-behind tractor: and others. Adapters for Luch: Motor Sich UUMP-2, Yarilo adapter, BUT, ARA and others. During the break-in period, it is prohibited to use a trolley or trailer; the gearbox and motor of the walk-behind tractor must adapt to the load.

Mower

Any type of mower can be used to connect to this unit. For example, the Zarya or Neva rotary mower. Allowed to work with small segment mowers. According to the instructions, only persons over 14 years of age can work with a walk-behind tractor and especially with attachments powered by a PTO. The rotary mower requires compliance with the rules of safe operation.

Lugs

Lugs are used for better traction with the soil. The device can perform plowing work without lugs, however, with this attachment, the walk-behind tractor is much more effective in plowing. The lugs can be metal or made of dense rubber (double rubber).

The diameter of the lugs is different: 350, 400, 500, 550 mm and others. Select this type of auxiliary tools based on the size of the wheels of your walk-behind tractor.

To plow properly, make sure that the plow on the walk-behind tractor is properly secured. Feedback from farmers suggests that high-quality plowing is impossible without a coulter (deepening unit). Use the coulter to regulate the plow's penetration into the soil. Recommended plows for Luch walk-behind tractors: PNM-1-20 Centaur, plow with wheel, PLN-2-25, Motor Sich PM-1 and others.

Snow blower, shovel

Types of snow blowers and shovels for the Luch walk-behind tractor: MB auger snow blower with belt drive, Volodar OM 1000 blade, Intertool, Husqvarna, Snowline, Forte KSM-21. Dimensions of dump shovels: 1 m, 90 cm, 80 cm.

Potato digger and potato planter

To operate the Luch walk-behind tractor during the harvest season, use any potato digger: the equipment is adapted for almost any mounting method, both hitch and bolted. Types of potato diggers: “Premium”, Mastertool, Mole, digger “Heart” and others. Types of potato planters: P-1TSU, APK-3, K-1L, KMB-5, APK-TsM.

Other types of attachments, namely: weights, couplings, wheels, tracks, etc. Can be purchased separately by the owner if necessary. These units are sold both online and in regular gardening and gardening equipment stores. You can often find advertisements for the sale of used attachments in good condition.

Device

The MB 1 walk-behind tractor was very popular at one time, namely in the eighties and nineties of the last century.

At that time, the special equipment market, if it can be called such, was filled with the products of Soviet factories, among whose products the Lucha equipment was considered one of the best of its kind. The Luch MB 1 walk-behind tractor confidently competed with the similar Niva walk-behind tractor.

It regularly performed its main function - cultivating a field or garden, transporting goods: crops, firewood, building materials. It was then that the spread of homemade trailers began, and the trend towards turning these walk-behind tractors into mini tractors became established.

MB1

Although the technical characteristics of the "Luch" MB 1 are in many ways inferior to modern walk-behind tractors, during the peak of its distribution they were at their best - the mass of the assembled device is equal to one hundred kilograms, the speed is from 3.6 to 9 kilometers per hour, on a flat road, loaded , it consistently produces 8-99 kilometers per hour.

Acceleration to hundreds is, in principle, possible, but only under very specific conditions, which hardly anyone has recreated. Fuel consumption is 1.5-2 liters per hour, the fuel tank volume is 3.6 liters, so experienced drivers always have a canister of fuel in reserve.

Its big advantage is that the engine does not require constant filling of oil - timely maintenance, if necessary, is sufficient. The walk-behind tractor is quite easy to operate - this process does not require much physical effort.

The minimum space required for a turn has a radius of only 1100 millimeters. The movement of the walk-behind tractor is smooth, thanks to the chain gearbox with V-belt transmission, gear shifting occurs smoothly, without jerking.

For more information about the Luch MB1 walk-behind tractor, watch the video:

The transmission of the walk-behind tractor is quite reliable, has two forward and two reverse gears, and the engine is quite powerful for such a product - 5 horsepower, provides good traction and stable speed. High cross-country ability and soil traction are achieved due to pneumatic tires with large tread.

MB 1 is also convenient for transportation thanks to the quick-release steering wheel and wheels. As for possible problems, the occurrence of which is inevitable during the operation of any equipment, especially those manufactured during the times of the Soviet Union, repairing the Luch walk-behind tractor will not become a serious problem.

Over all the years that farmers, summer residents and farm owners have been using it, a large amount of information has accumulated regarding fast, inexpensive and reliable repairs. Thanks to the experience of its owners, who have found all the causes of problems, you can repair your Luch walk-behind tractor at no extra cost.

Malfunctions, no matter how serious they may seem, can be eliminated in a home workshop, using the most common tools, without resorting to the help of specialists. The only thing that is required of you is to diagnose the breakdown as accurately as possible, and then it’s a matter of little things.

Instructions for use, maintenance, basic faults and repairs

The instructions for the Luch walk-behind tractor are an important document, according to which you need to use this unit, start it, run it in, and change the oil. If you wish, you can find instructions online in electronic form. Let's take a closer look at the main points of maintenance and operation of the walk-behind tractor.

Oil and fuel

The performance characteristics of a walk-behind tractor depend, first of all, on the quality of the fuel and oil. The main advantage of "Luch" is that it works on any gasoline, from AI-76 to AI-95. Any gasoline can be poured into the gas tank. What is the best oil to use and when to change it? Oil changes are carried out as standard - once every 50-100 engine hours, depending on the degree of load on the walk-behind tractor.

Type of oil: M-12 GI, M-10 GI, TU 38.10148-85.
The type of spark plug for the Luch walk-behind tractor is A17B or A11-1.

First launch and run-in

The first start of the walk-behind tractor is allowed if the device is in a fully assembled state, with the gas tank filled. From the moment you turn it on for the first time until 20 hours later, the walk-behind tractor runs in. At this time, the gearbox and motor adapt to the load. After the break-in period has expired, you can use the equipment at full power and maximum loads.

Alterations

The Luch walk-behind tractor is a fairly old piece of equipment, so all its modifications are quite reasonable. In addition, it is now quite difficult to find a new unit, so all walk-behind tractors presented for open sale have already been in use for a certain time.

As for some improvements, we can highlight several examples of useful, in our opinion, alterations:

The first thing you can try to replace is the front drive belt tensioner pulley. The fact is that the standard roller is quite noisy during operation, especially after long-term use.
The reason for this is that the bearing grease has dried out, and it is not possible to replace it with a new one, because its sides are flared.
As a replacement, you can use a pulley from the timing belt of a VAZ 2112 car (or similar). On both sides of the roller there are two springs - one is the main one, leading to the control lever, and the second pulls the roller back.
You can also weld a new muffler. What we have left from the old one is a cast iron elbow, which is quite problematic to weld anything onto. This problem can be solved by simply turning to lathes, who will turn out a thread into which a steel corner can be welded.
The muffler can was taken from the PD 10 engine, which is located at the very end of its exhaust pipe. The same corner that was used at the base of the homemade muffler is welded to the top of the can.
The engine breather also requires certain changes. The fact is that the standard breather runs in one straight line, connecting to the air cleaner with a fairly short hose.
During operation, it was discovered that the oil mixture enters this hose, which leads to further movement of oil into the air cleaner and then into the carburetor. To get rid of these consequences, you can use a longer hose, placing it in a loop.
Even if some amount of the oil mixture gets into this hose, it will not be able to pass further, but will return back to the engine.

We did not mention replacing the engine with another one, or how the ignition works, because this is a topic for a separate discussion.

In this article, we pay attention only to some small improvements that will make working with the Luch walk-behind tractor more comfortable and efficient

Owner reviews

Novel:

“I have had an excellent Soviet walk-behind tractor since time immemorial, left over from the previous owners of the dacha, when they sold the dacha to us, all the equipment with attachments was, as they say, put to work. I had to dig a little into the stuffing, restore the good old MB-1, and it worked like new! I use it for seasonal work; in winter it just sits in storage.

Advantages: powerful, after major repairs it has never caused any problems, it has been in operation for 8 years.

Disadvantages: new models are now expensive to buy, but this is a pretty decent unit, decent, with a good history, I think it will still serve.”

Review of the Luch MB-1 walk-behind tractor

The domestic walk-behind tractor Luch 1 is produced by several specialized enterprises that are part of. The Luch MB-1 walk-behind tractor, as well as its modification model MB 5040 Luch, have gained popularity among summer residents. The only difference between them is the shape of the gas tank; the rest of the characteristics of the devices are absolutely the same. Only the MB 5040 Luch walk-behind tractor costs a little more.

The average price for the Luch MB-1 motor-cultivator is 27 thousand rubles, and MB 5040 - from 27 to 28 thousand rubles.

Technical characteristics of the Luch walk-behind tractor

Anyone interested needs to know the technical characteristics of the Luch walk-behind tractor. The operating instructions for users state that the unit is designed for agricultural work. This mechanism is very convenient and easy to use, so even novice summer residents can understand the instructions for using the unit.

The Luch walk-behind tractor has the following technical parameters:

multicultivator weight - 100 kg;
movement speed varies from 3.6 to 9 km/h.

The engine is assembled from parts from different companies, but the CADVI 168F-2A power plant is most often used. Such a device is characterized by an upper arrangement of cylinders that consume a small amount of fuel. The engine weighs little and is not noisy during operation.

The unit is equipped with a 1-cylinder gasoline engine equipped with a forced air cooling system, a carburetor, and a built-in manual starter.

It is this part that sets the motor in motion.

The dimensions of the device make it compact not only in use, but also in storage. The width of the Beam unit is 60 cm, length - 1.5 m, height - 1.15 m.

An economical fuel consumption system has been created on the walk-behind tractor. In one hour, the MB-1 Luch consumes about 1.5-2 liters of fuel. The tank holds up to 3.6 liters of gasoline.

For the MB-1 walk-behind tractor, the instructions recommend using gasoline of the A-76, A-80, AI-92 brands.

There are two important rules for the device when refueling:

the motor must be turned off;
Do not allow gasoline to get on the spark plug bracket and ignition wire.

Engine power is 5 liters. s., it rotates at a speed of 3.2 thousand rpm, the diameter of the cylinder is 7.6 cm. The plowing depth is 30 cm. It can cultivate a plot of soil from 73 to 120 cm at a time.

Maintenance and operation

This document must be studied by the owners before starting work. The operating instructions help you understand the details of the Luch walk-behind tractor, the location of its spare parts and the rules for carrying out technical work.

In order for the device to work correctly, it must be maintained.

The oil should be changed regularly in accordance with the operating instructions.
It is recommended to pour M-10G2k or M-10V2 oil into the engine. The crankcase volume is designed for a one-time fill of 1 liter. lubricant.
The engine oil must be changed in accordance with the operating manual.
It is recommended to pour TAD-17i or TAP-15v oil into the transmission.
If you do not change the transmission oil on time, the gearbox will produce a loud knock and cause excessive overheating.
Control levers must be lubricated with Litol-24 or Solidol.

First launch

In order for the Luch walk-behind tractor to last as long as possible, it is necessary to start operation correctly.

If you bought a car from the factory, be sure to fill it with engine and transmission oil, as well as gasoline.
You cannot immediately begin full operation of the equipment. First, a run-in must be carried out. It should last about 5-7 hours. During break-in, the parts of the device are lubricated, rubbed against each other and fit securely into the grooves. The recommended engine load should not exceed half the maximum power.
Thanks to the running-in, the operating time of the device without breakdowns is extended.

Basic faults

A distinctive feature of Luch walk-behind tractors is their maintainability and ease of assembly.

Therefore, every owner of this device should know the causes of the main problems and how to repair them.

Reasons why the engine does not start:

The spark plug does not produce a spark (check its condition and connecting wires);
The air damper opened slightly;
The oil level has dropped below the minimum mark;
Dirty or low-quality gasoline;
Gasoline does not enter the carburetor (the entire fuel system should be checked).

Reasons that the engine does not operate stable, periodically stalls or produces low power:

Gasoline in the tank is running out;
Dirt has entered the air filter;
A large amount of dust has entered the fuel tank;
The piston rings have become unusable.

Reasons for excessive vibration from the Luch walk-behind tractor:

Bolted connections have become loose;
The attachment is not fully secured;
The tension belt has become loose.

The weak point of the Luch walk-behind tractor is the belt drive. It often frays and fails.

Therefore, you should always have several spare belts on hand in case of breakdown. Before purchasing a belt, be sure to determine the correct size.

Spare parts for the Luch walk-behind tractor

There are mounted and repair parts for the Luch walk-behind tractor. Along with the device, special spare parts that are necessary for the user to carry out repairs or other types of work are also sold. The repair and operating instructions for the motor cultivator indicate the following elements that come with the device:

Separately, it is worth noting the mounted spare parts; with their help, the walk-behind tractor performs a huge number of additional works, in addition to agricultural ones.

You can attach the following parts to the walk-behind tractor:

attachment for wood processing;
a snow blower with a snow mass discharge of up to 8 m;
plow;
ripper;
trailed trolley, which allows you to transport up to 350 kg of cargo;
loop and auger drill, with which you can make holes up to 60 cm deep;
a cultivator that is suitable for loosening the soil;
extended and special wheels.

Reverse belt

While on modern walk-behind tractors the reverse gear is switched off using a gearbox, which is directly connected to the engine, on the “Luch” a belt is used to transmit torque .

In fact, it is one of those parts that distinguishes the Luch walk-behind tractor from modern technology.

The reverse belt is subject to increased wear, and therefore an experienced beam owner always keeps several belts in reserve at once - sometimes they can be difficult to purchase, despite the fact that this walk-behind tractor is quite common.

Its marking is Z(0)- 1400 and it is easier to order it through an online store where there is a pre-order service.

In order not to find yourself in a situation where a malfunction has occurred and you cannot use your Luch walk-behind tractor, it is better to keep belts in the amount of at least two of each type. Such thriftiness will help you quickly replace them, even on the field, during work.

Reverse belt

In general, a good way to keep all equipment in working order is to have spare consumables for all components. This is especially important if such consumables tend to break down quickly.

What types of work does the Luch walk-behind tractor perform?

According to user reviews, attachments allow you to perform the following types of work using a walk-behind tractor:

cleaning sidewalks and paths from dirt, dust, snow, leaves;
mowing grass to later prepare it for hay;
drilling holes, etc.;
transportation of goods;
plowing and harrowing the land;
cleaning and forming furrows;
digging and hilling plants;
watering;
harvest.

To carry out this type of work, you do not need any special knowledge or skills. You just need to carefully read the user manual, which is sold along with the walk-behind tractor.

Let's consider the advantages of a walk-behind tractor. The device for agricultural work is sold in different configurations and modifications, each of which has many advantages. The general positive features of the multicultivator include:

Chain gearbox of the MB walk-behind tractor with wedge transmission, which significantly improves the cross-country ability and speed of the MB walk-behind tractor.
The presence of a belt.
The walk-behind tractor is very easy to operate; the unit moves smoothly when turning and does not make sudden movements.
The mechanism has wheels and a steering control - a movement regulator. The steering wheel of the device is removable, so it can easily be installed on another model.
You can put pneumatic rubber tires on the walk-behind tractor that have a deep tread. Thanks to this, the mechanism moves smoothly over gravel and textured surfaces. Tires are sold complete with other spare parts and components.
The steering wheel can be adjusted vertically.
There are special fenders on the wheels, which are designed to protect the wheels from dirt and earth, so the unit can be used in fields under different weather conditions.
The motor in the MB-1 Luch is very powerful, allowing you to perform many types of work on a summer cottage or field.
The mechanism has a durable transmission, which has 2 forward and 2 reverse gears.
Gasoline carburetor, which ensures economical consumption of gasoline.

How to change the oil seal

Another important point that concerns the repair of a walk-behind tractor is how to change the oil seal on the gearbox.

This is a fairly simple task that does not cause big problems for masters of their craft, but those who are faced with this for the first time and are not familiar with the design of both the walk-behind tractor and the gearbox specifically cannot always cope.

Therefore, first of all, it is worth studying the theoretical part , namely the parts that make up this unit.

The gearbox housing consists of two halves. They are stamped from steel and bolted together, with a rubber gasket installed between them to seal and seal. Steel angles are welded to the body, which, in essence, form the supporting frame of the entire device.

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Parallel to the output shaft and perpendicular to the gearbox housing, inside of which there are chains and bolts holding it together. On them, in turn, pins and bolts are installed, and a shift knob block is located. A chain consisting of 46 links leads to it.

Stuffing box

The block itself consists of an input shaft, with the help of which gears are changed. There are also sprockets that are responsible for first and second gears.

The shift shaft , over time, can cause malfunctions - the weak point in it is the shift block, which wears out greatly over time and the walk-behind tractor works, to put it mildly, unsatisfactorily. Sooner or later, it will have to be replaced, and for this it is necessary to completely dismantle the gearbox.

In order to replace the oil seal on the gearbox of the Luch walk-behind tractor, such manipulations are not necessary. With sufficient skill and knowledge of the design features, everything can be done without disassembling anything.

Simply remove the boot and bushing; the seal can be removed with a screwdriver.
Next, you just need to replace the old oil seal, carefully placing it in place with a hammer, and install the bushing and boot in place.
If you do not have experience in removing something with a screwdriver and a hammer, in this case it is better to remove and disassemble the gearbox - just remove its housing.

Motoblocks "Luch": characteristics and operating features

Tilling the soil can only be effective if you use the right tools. One of them is the Luch walk-behind tractor. But they must be used meaningfully and competently, as clearly as possible.

Peculiarities

The Luch walk-behind tractor, like many other domestic machines of recent decades, was the result of conversion. It began to be produced at the facilities of Perm Motors OJSC, which previously was exclusively engaged in the supply of helicopter engines. Consumers note that these devices:

are relatively inexpensive and assembled properly;
can be used at any time of the year;
they work calmly on all brands of gasoline, even AI-76;
equipped with the same attachments that are used for other Russian walk-behind tractors;
They extremely rarely create problems for owners (only occasionally there are mentions of the inconvenience and unreliability of individual copies).

Let's take a closer look at exactly how a walk-behind tractor of any model is constructed, regardless of size. The ignition circuit involves the use of special spark plugs. In addition to them, the system includes:

converter;
stator;
magnetic shoe;
button to turn off.

It is useful to consider other components using the example of the MB-1 model. This version, released back in the 1980s, is very simple in its technical structure. But such simplicity can even be considered a virtue. The clutch, which transmits the energy generated by the engine to the gearbox, is made of a pair of belts. And also in the clutch there is:

drive, front and rear pulleys;
gear pulley;
traction;
front and rear arms;
special springs.

The gear unit changes the gear ratio, simultaneously transmitting rotational energy to the wheels and working tools. The MB-1 model is equipped with a chain reducer, which, in addition to chains, includes:

body (assembled from symmetrical halves);
switching shaft and handle for its control;
force output shaft;
three blocks of stars.

The steering mechanism, thanks to the height adjustment function, can easily be adjusted to specific users. The right side of the steering wheel is complemented by a lever with which the engine is controlled. This lever acts through a special cable on the throttle valve. But on the left side of the steering wheel there is a forward lever connected to a pulley of the same name. Just below is the reverse lever.

The transmission is capable of operating in a pair of forward and a pair of reverse gears. The most important element of the chassis is the wheels; they can be either inflatable or made of solid rubber.

Attention: those farmers who want to achieve the highest effect from their equipment should change rubber movers to steel ones, supplemented with lugs. The motor on the walk-behind tractor of this model is of the DM-1 type. The supply of a mixture of fuel and air to a single cylinder occurs after it is prepared in the carburetor.

Design and adjustment of the K-45 carburetor

The Neva walk-behind tractor of models MB-1 and MB-2 is equipped with a DM-1K engine with a K-45 carburetor.
There are also modifications of the model, such as K-45R, K-45U, K-45M. To set it up correctly, let’s briefly look at its structure.

A carburetor is an engine component that transfers fuel, mixing it with air, and regulates its flow into the cylinders.

Consider the K-45 scheme. Here, the throttle lever 11 is located at the bottom of the valve, which regulates the amount of mixture of gasoline and air. The regulator rod is attached to it. At the top of the throttle valve there is a stop screw 5. The main lever of the throttle valve 14 controls its position. In the closed position it is held by a spring, and when the internal combustion engine starts, it opens to a certain angle. The degree of angle is calculated so that there is no excessive enrichment of the fuel mixture in the cold engine of the walk-behind tractor.

Adjusting K-45 allows the entire power system and the engine itself to operate without interruption:

prepare the carburetor for adjustment and warm up the walk-behind tractor engine;
reduce the engine rotation speed using screw 5;
using screw 8, you need to set the maximum engine idle speed;
and finally change the rotation speed by turning the screw in the opposite direction by 0.25 turns.

Repair K-45: basic recommendations, video

In order to repair the carburetor with your own hands, we suggest that you watch the video of repairing the Neva MB-2 walk-behind tractor.

Let's consider the main malfunctions of the K-45:

If an excess amount of air enters the internal combustion engine chamber. Try replacing the gasket between the head and the carburetor and tightening the mounting nuts on the connection. If this does not help, the cause may be wear on the shaft on the damper or the hole where it is connected. Such a shaft must be replaced, and in case of broken holes, the entire device is replaced.
When too much fuel enters the float chamber. In this case, check and replace worn parts: float, jets, needle.
If the carburetor is getting little gas, check the filter and sump, fuel supply hoses and gas tank. Contaminated elements must be washed or replaced, and if the tank is rusty from the inside, you will have to clean it with caustic soda.
If you notice an increase in fuel consumption, adjust the carburetor by referring to the operating instructions.

Replacing with another carburetor

In order for the carburetor of the walk-behind tractor to work properly and without interruptions, it is necessary to constantly monitor the condition of the filters, carry out adjustments for the correct supply of fuel and air, and also use gasoline with an octane rating of at least 92. In the event that a breakdown of the K-45 could not be avoided :

purchase the original unit;
dismantle the faulty mechanism, starting from the engine head;
Drain the remaining fuel from the faulty carburetor;
clean the connection and replace the unit.

Or contact service for a replacement. If you want to install a carburetor of a different brand on the unit, purchase the necessary adapter.

The lineup

The already disassembled version of “MB-1” continues to be produced today, but with an imported 5 hp engine. With. A more advanced option is “Luch MB 5040”. This model starts much easier, and the motors installed on it allow forced lubrication. The power has not changed compared to its predecessor. As for modification 5141, it turned out to be extremely unsuccessful, unclaimed, and the production of walk-behind tractors of this model was stopped long ago.

Attachments

“Beams” are popular primarily because they allow the use of a wide range of attachments, including those suitable for other agricultural machinery. Most often, crescent cutters are included in the kit. You need to wear gloves to assemble and install them. Before starting work, experts advise checking whether everything is secured correctly. Detailed and up-to-date information can always be obtained from the instructions for a specific device.

The power of Luch walk-behind tractors allows you to confidently use them to move:

The best carts are TM-300 and TM-500. Much more compatible adapters and trailers have been created. Important: during break-in, operation under load is prohibited. All parts of the device must first adapt to normal operation on their own. Mowers of any type, both rotary and segmented, can be attached to Luch walk-behind tractors.

As practice shows, the use of lugs for plowing the land dramatically increases the efficiency of walk-behind tractors. Depending on the choice of the consumer, the hooks can be made of steel or made of dense grades of rubber. The first option is better suited for working on the most dense and rough soil. The difference between lugs is related to their diameter. When choosing it, it is better to focus on the size of the walk-behind tractor wheels.

Rarely does a farmer operate motorized equipment without a plow. But in any case, this tool will have to be secured correctly. Judging by the experience of farmers, only the coulter makes it possible to adjust the depth of the ploughshare into the ground in an optimal way. To remove snow, you can use either a snow blower or a shovel. Both auger snow blowers and dumps of various types (width from 80 to 100 cm) are combined with Luch.

On personal plots for planting and harvesting potatoes and other root crops, you can use all existing potato diggers and potato planters, both Russian and imported. The walk-behind tractor allows you to attach such accessories both to a rigid hitch and with bolts. The rest of the equipment can be purchased at your discretion. Allowed use:

weighting devices;
track blocks;
special couplings (including used ones).

Specifications

The technical data sheet for the Luch walk-behind tractors states that their length is 150 cm with a width of 60 and a height of 100 cm. The weight of the structure reaches 100 kg. The device can travel at speeds of 3.6-9 km/h. The track width of the walk-behind tractor is 59 cm, and the ground clearance is 33 cm. “Beams” are capable of climbing a slope with a longitudinal inclination of 20 degrees. For a transverse slope, the critical value is 24 degrees.

The walk-behind tractor has 2 forward and 2 reverse gears.

Important: workers must wear earplugs. After all, the sound volume reaches 92 dB. The cultivator for the walk-behind tractor has a width from 72 to 113 cm. Its diameter is 36 cm.

How to set the ignition correctly

The operation of any device begins with starting the engine and the ignition system must work no worse than a Swiss watch.

But if the functionality of this element is impaired in one way or another, it is necessary to adjust it.

Before setting the ignition on the walk-behind tractor Luch, Don, Huter, Profi, Plowman, Champion, you must first of all:

Check the spark plugs. They are the main reason for the failure of this system. It is also always recommended to have a spare candle with you, in case manipulations and cleaning do not help. To deal with the spark plug, you need to unscrew it and wipe the electrodes and remove carbon deposits from them.
Next, you need to set a gap between them.
Next, put the wire square on the spark plug, and firmly press its body against the cylinder, its head, while turning it away from its hole, which is located in the cylinder head.
It is necessary to rotate the crankshaft . This can be dealt with using a starter cord. In a working system, the spark that jumps between the electrodes should be light blue. If it is missing or has a white-yellow color, the system is faulty.

In this case, you can check the gap between the stator and the magnetic shoe of the flywheel; it should be from 0.1 to 0.15 millimeters.
After these simple manipulations, you will receive a perfectly working Luch walk-behind tractor. Installing the ignition on it is as simple as setting it up, since it consists of several parts that are connected like parts of a construction set.

All grooves are designed in such a way that nothing can be mixed up, the spark plug cannot be inserted on the wrong side, or the wires cannot be connected incorrectly. After you have adjusted the ignition of the Luch walk-behind tractor, and this part of it is working properly, you can begin setting up the next important engine component.

Basic faults

Maintenance of Luch walk-behind tractors is quite simple; that is why owners need to know how to correctly identify the causes of problems and eliminate deficiencies. If the unit does not start, you can assume:

the spark is gone (you need to examine the spark plug, wires, and battery);
the damper for air access is slightly open;
too much oil has been used;
clogged or low-quality gasoline is poured;
there was a failure in the fuel supply system.

It happens that the engine seems to be working, but not stable enough or with low power. This is usually due to the exhaustion of fuel in the tank. But it can also be assumed that the air filter is clogged, or that a lot of dust has entered the tank, or that the fuel rings are damaged (worn out). Normally, the “Beam” should not vibrate much. If this does happen, you need to check the bolted connections and the coupling (fixation) of the attachments.

It is not recommended to use Chinese-made spare parts for replacement. It is advisable to use original parts, including main shaft bearings. The only exception is belts, since their parameters are unified. But be sure to measure the dimensions carefully. If repairs and maintenance are carried out according to all rules, problems should not arise.

You will learn how to plow the ground with a Luch walk-behind tractor from the video below.

Gearbox

Owners of Oka walk-behind tractors, like any other equipment, sometimes encounter operational problems. Including the operation of the gearbox.

Next, we will look at the most common difficulties, their probable causes and ways to solve the problem:

There is oil leaking on the output shaft: the axle shaft cuff may be worn out (replacing the cuff will help);
the gearbox is jammed (one of the reasons is a broken chain; it needs to be replaced);
it is not possible to change gears (you need to disassemble the gearbox and replace broken parts);
the mechanism for disengaging the axle shafts is broken (adjusting the tension of the axle shaft control cable will help).

The figure below shows a cross-sectional diagram of the walk-behind tractor gearbox

Cross-sectional diagram of the walk-behind tractor gearbox

If the normal operation of the oil seals is disrupted, namely when oil leaks, the oil seals should be removed and inspected for cracks and wear. Replace if necessary.