Do-it-yourself centaur engine repair

In detail: do-it-yourself centaur engine repair from a real master for the site my.housecope.com.

In this material, we will consider typical malfunctions of a walk-behind tractor engine and how to fix them.

Typically, there are two types of engine faults:

1. The engine will not start.

2. The engine does not work satisfactorily (it does not gain power, it runs intermittently, the engine stops).

If the engine does not start, then in search of malfunctions and their further elimination, you should perform the following steps to identify the causes.

- Checking the presence of fuel in the tank (checking the fuel system)

- Checking the carburetor air damper (when starting a cold engine, the damper must be closed)

- Checking the flow of fuel to the carburetor.

- If there is no fuel entering the cylinder, a dry plug is indicated. Check the presence of fuel in the fuel tank, fuel flow to the carburetor by removing the fuel hose from the inlet fitting. For the K45 carburetor, press the sinker until the fuel leaks through the drain hole.

- If fuel does not flow to the carburetor, unscrew the fuel cock, disassemble it and clean the filter from dirt.

- When fuel enters the carburetor, but there is no fuel supply to the cylinder, check the operation of the fuel valve and the cleanliness of the jets.

- To check the KMB-5 carburetor, remove it from the engine, drain the gasoline from the float chamber, then supply air through the fuel inlet in the operating position of the carburetor. The air should be easily blown through.

- Repeat the purge with the carburetor turned 180 degrees, in this position the air supply should stop. If the result is the same as described, the fuel valve is working properly.

Video (click to play).

- The fuel level in the float chamber is regulated by the float tongue, the normal fuel level should be 30-35mm.

- After all actions with the carburetor and installing it back, the carburetor should be adjusted.

- It so happens that the engine does not start from excess fuel, this is evidenced by a wet plug. Dry the cylinder and “bleed” the engine with the plug turned out, before that, turn off the fuel supply.

- If the plug is dirty with deposits, clean it and check the gap between the electrodes, usually the correct gap is 0.8mm. Next, you should check for the presence of a spark, if there is no spark, then there may be a malfunction in the electrical circuit or a large gap between the ignition coil and the magnetic circuit.

If the engine starts, but does not develop the required power, runs intermittently, stalls, etc., the reasons for this may be the following malfunctions:

- The air filter is dirty, as a result of which the air in the carburetor is insufficiently supplied.

- Defective ignition system. You should check it, as well as check the candle, the gaps between the electrodes, etc.

- Clogged muffler with combustion products. The muffler should be disassembled for cleaning.

- Dirty carburetor and incorrect setting.

- Low power may be due to wear of the cylinder-piston group. The compression should be 8 atm. Compression can be checked by attaching a compression gauge to the spark plug hole, turning the engine shaft with a starter.

Read also, information on how to make a trailer for a walk-behind tractor with your own hands.

If the engine of the walk-behind tractor does not turn off, first of all it is necessary to pay attention to the operation of the shutdown button. It is necessary to disassemble, check and, if necessary, replace or clean the contacts.

Some of the information that may come in handy when repairing a walk-behind tractor, see the article Device of a walk-behind tractor.

Engine won't start... When it comes to a gasoline engine, when troubleshooting, it is necessary to consistently check all possible causes of the malfunction, namely:

Switching on the ignition.
Fuel in the tank.
Opening the fuel cock.
The state of the carburetor air damper (when starting a cold engine, it must be closed).
Fuel flow to the carburetor. To do this, you need to fill the float chamber by drowning the float button (fuel should start pouring out of the hole in the float chamber cover), or disconnect the fuel hose from the carburetor and check if the gasoline runs freely. If the fuel runs too thin or does not run at all, this may indicate a dirty fuel filter in the tank or a clogged fuel tank cap air valve. Repair of the walk-behind tractor in this case will be reduced to cleaning the filter or valve.

The state of the spark plug may indicate the flow of fuel into the engine cylinder, which in any case must be checked when troubleshooting the ignition system. The candle is unscrewed from the cylinder cover, having previously disconnected the wire, and inspected. If it is dry, it means that the fuel mixture is not being supplied to the cylinder. And if before that it was established that gasoline enters the carburetor, it means that the reason for not starting the engine may be in the carburetor - contamination of its filter mesh, clogging of the jet or some other malfunction. Whatever it is, the carburetor needs to be removed, disassembled and cleaned, however, this device is very complex and before repairing it, you should at least look at the diagram of the carburetor.

A wet candle indicates that fuel is entering the cylinder. Sometimes the walk-behind tractor does not start from an excess of fuel mixture, so if there is too much gasoline on the plug, you need to dry the cylinder by thoroughly “pumping” the engine with a hand starter with the plug turned out. Before that, you need to shut off the fuel supply.

If the plug is dirty with carbon deposits, it should be cleaned with gasoline and fine sandpaper. It is also necessary to check the size of the gap between the electrodes and, if necessary, adjust it in accordance with the requirements of the operating manual. Usually the gap should be about 0.8 mm.

After that, you need to check for the presence of a spark - connect a wire to the candle, press its metal part to the cylinder cover and simulate starting the engine with a starter. If the spark plug is intact, a spark will appear between the electrodes. Sometimes it happens that a spark occurs, but it is so weak that it is not enough to ignite the fuel. If in doubt about the strength of the spark, you need to check the operation of the engine with a new spark plug.

The absence of a spark can mean a malfunction of the spark plug, lack of contact in the electrical circuit, violation of the gap between the ignition coil and the magnetic circuit, malfunction of the electronic ignition coil. All of these elements must be checked. Defective spark plug and ignition coil must be replaced.

In the event that the walk-behind tractor is equipped with an electric starter, the engine may not start due to a discharge of the battery, a blown fuse, or a malfunction of the starter. Check the battery charge, replace the fuse, repair or replace the starter.

The engine does not develop power... If the engine of the walk-behind tractor starts, but does not develop power (it works intermittently, stalls or does not pick up speed under load), the following malfunctions may be possible causes of unsatisfactory operation.

The air filter is dirty, as a result of which insufficient air enters the carburetor, and the fuel mixture is re-enriched.Correct maintenance of the walk-behind tractor requires periodic cleaning of the air filter, however, in very dusty work, more frequent cleaning may be required. It is necessary to check the condition of the air filter and, depending on its material, clean it using one of the appropriate methods. The paper filter is cleaned by lightly tapping on something solid and blowing it with a vacuum cleaner, the foam filter is washed in water with detergent and dried, the mesh filter is blown out with a vacuum cleaner, etc. At the end of their service life, filters must be changed.

Poor fuel quality. Bad fuel must be replaced with the one recommended by the manufacturer.

Defective ignition system. You need to check it as described above. Clean the spark plug and adjust the gap between its electrodes, check that there is no damage in the electrical circuit and the gap between the coil and the magnetic circuit (if this is provided for by the walk-behind tractor repair manual).

Sometimes the engine cannot develop power due to clogging of the muffler with combustion products. In this case, you need to disassemble the muffler and check its condition, if necessary, rinse it in gasoline and clean it with a carbon sink using detergents. The non-dismountable muffler is dried with a hairdryer after washing. Remember that carbon deposits contain substances that are carcinogenic and should not be dry cleaned that could cause them to inhale. When removing the muffler, plug the engine outlet with a clean cloth.

Dirt or improper adjustment of the carburetor of the walk-behind tractor. It is necessary to remove and clean the carburetor, and then adjust it, if provided for by the instructions for the walk-behind tractor.

A drop in engine power can be caused by a decrease in compression due to wear of the cylinder-piston group, the formation of scoring and scratches on the cylinder and piston, "sinking" in the grooves or broken piston rings. In this case, check the compression by connecting a compressor to the spark plug hole and turning the engine shaft with a starter. Normal compression is characterized by a value of at least 8 atm (normal compression can be indicated in the engine specifications). When measuring it, you need to take into account that the presence of a decompressor in the engine may affect the readings of the compressor. The compression value in this case is about 5 atm. will not mean a low degree of wear of the cylinder-piston group, but the actuation of the decompression valve.

Diesel engine won't start... For most users, repairing and adjusting a walk-behind tractor with a diesel engine is a more difficult task than repairing a walk-behind tractor with a gasoline engine. Not so much, perhaps, because of the structural complexity of the diesel engine, but because of the lack of experience, since household appliances are usually equipped with gasoline engines.

The most common faults or conditions that can cause diesel engines to not start are outlined in the following table. A detailed list of diesel malfunctions and ways to eliminate them are set out in the operating instructions for specific diesel motoblocks.

Cylinder head nuts not tightened or cylinder head gasket damaged.
Worn piston, cylinder liner or piston rings.
Piston rings seized or broken.
The correct valve clearance has been violated.
The valve stem is stuck in the guide.

Tighten the cylinder head nuts evenly in a diagonal sequence. Replace the cylinder head gasket.
Replace worn parts.
Check piston rings, flush or replace them.
Adjust clearance.
Remove the valve, flush it and the guide with fuel.

Faults in the clutch itself depend on its type.If the walk-behind tractor has a belt drive that acts as a clutch, slippage can occur if there is oil contamination on the drive belt or pulley, the belt is not tensioned or is too worn out. The remedies for these problems are obvious - clean the transmission elements from dirt, tighten or replace the belt.

In a dry disc clutch, slippage can be caused by oil contamination on the driven and driven discs. It should be removed by rinsing the discs with gasoline and drying.

Regardless of the type of clutch (dry or oil), slippage can lead to wear of the friction layer of the discs, weakening of the compression spring, lack of a gap between the pressure element and the release bearing. The remedy depends on the nature of the problem. Worn discs and springs change, if the gaps in the clutch are violated, the clutch of the walk-behind tractor is adjusted accordingly.

The clutch does not completely disengage... In this case, you should also start by checking the tension in the cable from the control handle to the clutch.

Incomplete clutch disengagement can also be caused by deformation of the friction discs, sticking them on the splines, non-compliance with the required parameters of the characteristics of the oil poured into the clutch housing. The latter applies to oil bath couplings. It is necessary to replace the deformed discs, eliminate the causes of their jamming on the splines, change the oil.

Increased noise in the gearbox (gearbox)... Noises in the gearbox may occur due to a lack of oil in it or a mismatch in its quality with the required parameters - in terms of brand and purity. It is necessary to add oil to the gearbox of the walk-behind tractor or replace it.

Transmission units can make noise due to the banal non-tightening of fasteners. You need to review and tighten them.

Most often, noise occurs due to worn gears and bearings. In this case, they are harbingers of more serious breakdowns. Timely repair of the walk-behind tractor gearbox, which consists in replacing worn parts, will help to avoid them.

Failure to turn on, spontaneous shutdown, or difficulty changing gears... These faults can occur for a number of reasons:

Due to the deterioration of the parts involved in gear shifting. Usually, wear (rolling) of the ends of the engaging gears occurs, which leads to incomplete engagement and self-deactivation of the speeds. In this case, it is necessary to disassemble the gearbox of the walk-behind tractor and dress the gear teeth by grinding or, if the wear is too great, replace them.
Due to abrasion of the shaft splines, as well as axial displacement of the shafts due to wear on bearings and circlips. The axial position of the shafts can be adjusted by installing additional circlips. Excessively worn bearings and rings must be replaced.
Due to improper adjustment of the clutch, which can lead to difficult gear shifting. The clutch is not squeezed out (disengaged) to the end. The inexperience of the operator releasing the clutch lever too early when shifting gears can also lead to this. You need to adjust the clutch and learn how to shift gears correctly.

The gearbox is a rather complex unit. If the work and device of the walk-behind tractor is a complete secret for the user, you should not start repairing it yourself. It is better to entrust this work to those for whom maintenance and repair of machines is a professional matter.

Transmission units are warming up... Among the main reasons for this malfunction are the worn out bearings, insufficient level of transmission oil in the crankcases, and the inadequacy of its condition to the required parameters. Corrective measures: replace bearings, top up or replace oil.

Oil leaks from the gearbox (gearbox)... This occurs when worn or improperly installed oil seals of bearing assemblies, not tightened caps or damaged gaskets under them, clogging of the air valve (breather) of the oil fill cap, filling the crankcase with oil above normal. The leak is eliminated, respectively, by replacing and correctly installing the oil seals, replacing the gaskets and tightening the cap fastening bolts, cleaning the breather, bringing the oil level to normal.

Instability of the walk-behind tractor while driving (yaw)... This type of movement of the walk-behind tractor is caused by different pressure in the right and left wheels, uneven wear of the tire tread, improper adjustment of trailers, in particular, the plow. In this case, the adjustment of the walk-behind tractor should be reduced to equalizing the pressure in the wheels and adjusting the trailers. It is also necessary to use tires of the same degree of wear.

Increased vibration of the walk-behind tractor... Increased vibration usually occurs when incorrect adjustment or loosening of attachments (cutters, rotary mowers, etc.). If vibrations occur, immediately stop the walk-behind tractor and put the towing devices in order - fix the cutters or cutting segments of the rotary mower, replace them if they are worn out or broken.

The article lists only the most common malfunctions. The practice of operating motoblocks is replete with a much wider list of malfunctions - both atypical, which are sometimes very difficult to diagnose, and those whose nature and place is beyond doubt.

If it is not possible to eliminate the malfunctions of the walk-behind tractor on your own, the only option remains is to contact the service center for the maintenance and repair of walk-behind tractors.

We'll see Oleg (Serwacy) in the fall, I think they should reset him.

alexander (Haiba) Yes, Ole checks everything.

Tags: Do-it-yourself centaur walk-behind tractor engine repair video

9 HP Diesel Engine Assembly - Duration:. Repair of the Ch1 diesel walk-behind tractor (we grind the valve) - Duration: 14:25. Doroshok.Jump to DIY motoblock engine repair, video - Repair tools. DIY equipment for motoblocks. Image - Do-it-yourself centaur engine repair

Arthur with a bouncy woman included

Olesya, I have a Kraftsman from the USA for more than 10 years, I changed the belt 2 years ago and truncated
Awesome advise

Sergey caiman. with a Subaru engine.

Stanislav who are not Chinese

Alena It depends on what to do. If you mainly drive, then some kind of Centaur 9 hp. With. He is 250kg. In the garden in the hands - heavy. Bison NT-105 is half lighter. It will be more maneuverable on narrow turns Mikhail. And in principle, the model depends on the work performed. Personally, my recommendation is to buy only DIESEL. Checked by me. I have NT-105. By the way, Chinese.

DIY motoblock engine repair, video. motoblocks Neva, Centaur, or Bison are actively used in the process of their processing.

Good afternoon, help me repair the Centaur 1070D walk-behind tractor, it was scattered. engine operation and throws black smoke when climbing a mountain and how to do it correctly. Unscrew the fuel pipe from the injector and turn the flywheel by hand. ... Pricing to the walk-behind tractor | DIY trailer for a walk-behind tractor.

If you often use small agricultural machinery, you have probably encountered various faults in its design more than once. As practice shows, most often farmers are forced to repair the cultivator. Let's look at what exactly is required to eliminate the breakdown that has arisen, and how to repair the unit with your own hands.

The classical design diagram of an agricultural unit consists of certain elements. These include the following nodes:

Fuel system - it consists of a carburetor, a fuel tank equipped with a tap, an air filter and a fuel mixture supply hose;

Manual or electric starter. The second option is typical for professional cultivators.The starter is used to untwist the main shaft by means of a special rope;

Cooling systems - begins to work under the influence of the rotation of the crankshaft and provides cold air through the speed of the flywheel;

Ignition system - generates and supplies a spark in the cultivator structure;

Gas distribution system - supplies fuel to the engine cylinders and allows the release of waste recycled fuel.

Understanding what the spare parts for cultivators are responsible for will make it possible to quickly identify the breakdown and fix it on your own.

Since the motor is most susceptible to loads, it is with it that most of the breakdowns of the cultivator are associated. The main symptom of a breakdown is a sharp loss of engine power. In this case, you need to check:

Is the motor warmed up, especially if the cultivator is used in winter;

The presence of dirt in the air filter;

The quality of the fuel used;

Serviceability of the ignition system;

The presence of residues of combustion products inside the muffler;

The presence of contamination in the carburetor;

Integrity of the piston elements.

If the motor fails to start at all, experts advise checking its position. The fact is that if the motor is tilted in relation to the central axis, then it will need to be set to its original position and check the quality of attachment to the frame.In addition, it is required to check the amount of fuel in the tank and blockages in the tank cap. Image - Do-it-yourself centaur engine repair

Do-it-yourself repair of a motor-cultivator is often associated with cleaning the carburetor. To do this, the assembly must be completely disassembled and cleaned according to the manufacturer's recommendations. The algorithm of work, as a rule, is described in detail in the operating instructions for the cultivator.

All cleaning procedures performed are aimed at restoring the uniformity of the carburetor float immersion. To do this, it is also necessary to eliminate the deformation of the bracket, by means of which the float is attached to the piston system.

The dive setting is done with both open and closed needle valves. Use a screwdriver to align the bracket. All manipulations must be clear and accurate.

Along with the elimination of deformation, it will also be necessary to adjust the valves of the cultivator.

To do this, check the tightness of each of them. Performing this procedure allows you to restore the functions of the carburetor and return the amount of fuel consumed by it to normal.

The cultivator motor plays the most important role in the design of the machine. Often it will not start due to a malfunctioning fuel pump.The pump serves to supply the fuel mixture to the carburetor at a certain point in the cycle. If no fuel is supplied, then the engine will not start. The pump is defective in the following cases:

If the fuel supply to the engine injectors is interrupted;

In case of fuel leakage as a result of mechanical wear;

The appearance of strange noises during operation.

To fix the damage, the pump should be disassembled and inspected. It is possible that the engine will not start on the cultivator due to dirt inside the pump. In this case, the device will need to be cleaned and reinstalled.Motoblocks are able to significantly facilitate work on a personal plot. This is a compact agricultural machinery with high functionality and versatility. With its help, you can not only loosen the soil, but also carry out basic activities for the care of plants and harvesting.Like any other technique, walk-behind tractors sometimes fail. Fortunately, they have a relatively simple design, and you can even carry out simple repairs with your own hands. To do this, you need to learn how to determine which part of the walk-behind tractor is out of order, and what needs to be done to restore the operation of the equipment.Our article will help you with this, which not only describes the principle of operation of the walk-behind tractor, but also the main causes of equipment malfunction and how to eliminate them.Most of the models consist of the same parts, so you can do the repair of the main components yourself. Image - Do-it-yourself centaur engine repair

Figure 1. Standard drawing of a walk-behind tractor

Each walk-behind tractor consists of a base frame, a gasoline or diesel engine, a fuel tank, a rotor for attaching cutters, wheels and a bracket for fixing attachments. The most important component is, of course, the engine, on the successful operation of which the operation of the equipment will depend (Figure 1). In addition, modern models have fuel supply, cooling, ignition and gas distribution systems, and the occurrence of malfunctions in them can also lead to a shutdown of the unit.

The main function of the walk-behind tractor is to loosen the soil using special cutters that are attached to the frame of the device.

Note: Unlike a conventional plow, the cutter does not overturn the soil and prevents soil erosion.

In addition, the technique can be used to loosen row spacings in the process of growing agricultural crops, and special attachments are useful for harvesting. Simple models (cultivators) consist of several wheels and handles that are used to control the machinery. On the handles there are buttons necessary for control. More powerful and modern models are mini tractors without a cab. In this case, control is carried out by buttons and pedals located on the dashboard.

Despite the fact that walk-behind tractors are produced by a wide variety of manufacturers, it is customary to divide all such equipment into types depending on weight and power (Figure 2).

According to this criterion, walk-behind tractors are:

Ultralight - weighing up to 15 kg;
Lightweight (about 40 kg);
Medium - from 45 to 60 kg;
Heavy (over 60 kg).

Figure 2. The main types of machinery and attachments

As a rule, all types of equipment are supplied with an internal combustion engine with a capacity of 1.5 to 10 horsepower. This is necessary in order for even the ultra-light model to successfully cope with loosening the soil in areas with heavy and dense soils.

Since the main part of any technique is the engine, the main number of breakdowns is associated with it (Figure 3). In some cases, poor engine performance may be associated with poor-quality fuel or dirty air filter. There are also cases that the engine does not work properly due to insufficient heating, malfunctions of the ignition system, carburetor or pistons.

Figure 3. Main engine parts

We will try to understand the main types of damage to the walk-behind tractor, which can be eliminated with our own hands. However, if you are not confident in your own abilities or fear that it is impossible to eliminate the malfunction on your own, it is better to contact a specialist.

If the engine does not start when you try to start, there may be a problem with the engine itself or its starting system.

To troubleshoot fuel supply problems, do the following:

Check the spark plugs: if they are dry, there is no fuel entering the engine cylinders. Such a malfunction can occur when blockages form in the gas tank cap, debris gets into the fuel supply system, when the supply valve is closed or the banal lack of gasoline.
Refuel the tank and try to start the engine again.
Check the fuel cock: if closed, it must be repositioned to open.
Clean the fuel tank drain hole.
Drain the gasoline tank, remove the fuel cock and rinse it with clean gasoline.
Remove the connecting hose near the carburetor and blow it out (together with the jets).

If all these manipulations did not help, and the fuel enters the carburetor, but does not enter the cylinder, then the malfunction is in the carburetor and this part must be carefully examined.

A common cause of carburetor malfunction is blockages. In this case, it is enough to disassemble the part, remove the source of pollution and reassemble. The instructions, which are necessarily provided by the manufacturer, will help you with this (Figure 4).

Figure 4. Diagram of the carburetor

The main purpose of all manipulations with the carburetor is to adjust the immersion of the float, which is attached with a bracket to the piston system. It often happens that the bracket is deformed, the float does not sink correctly and the carburetor does not function properly. The bracket is adjusted with an ordinary screwdriver, both with the needle valve open and closed.

After correcting the carburetor, it is recommended to also check the serviceability of the valves. It is necessary to check the tightness of each of them and, if necessary, restore the optimal clearance.

It often happens that during the operation of the walk-behind tractor, extraneous noises appear in its gearbox. As a rule, this is due to an insufficient amount of oil in it, and to eliminate the malfunction, it is enough just to add fluid to the gearbox (Figure 5).

However, if there is enough oil in the gearbox and the noise persists, the brand and grade of oil may not be suitable for your model. In this case, the oil must be completely drained, the system flushed and refilled with new, more suitable oil.

Figure 5. Gearbox diagram

In addition, extraneous noise may be associated with insufficient fixation of the transmission elements. They must be inspected and, if necessary, tightened. It should also be borne in mind that the gearbox elements must be inspected and replaced in a timely manner when the first signs of wear are detected. This way you can avoid more serious repairs in the future.

Engine malfunctions can occur both during start-up and during operation. In this case, it is imperative to check the spark plugs. If they are dry, there is a problem with the fuel supply, and if they are wet, the problem is in the engine itself.

One of the most common startup problems is the failure of the ignition system. To eliminate such a malfunction, first of all, you need to inspect the electrodes of the candles, and remove carbon deposits that could have formed on them with emery. After that, the candles are washed with gasoline and dried. Starting problems can also be related to incorrect electrode spacing. In this case, you just need to carefully bend them to the distance specified by the manufacturer.

In addition, ignition problems can be associated with damaged electrical wiring or spark plug insulators. These items are subject to replacement. Also, the lack of starting the engine may be associated with stator defects. Unfortunately, it is impossible to repair this part on your own and it will simply have to be replaced.

More often than not, the engine shows signs of malfunction directly during operation. This is due to the fact that small agricultural machinery is exposed to heavy loads and requires regular inspection and maintenance.

Note: If the walk-behind tractor began to move in jerks or make extraneous noises, it is imperative to turn it off, let the engine cool down, and only then proceed to the inspection.

Common problems in engine operation are:

An independent set of revolutions by the engine indicates that the governor and linkage levers are loose and need to be readjusted.
When you press the throttle lever, the engine does not pick up speed, but, on the contrary, loses power. This indicates overheating of the motor, so the technician must be turned off and wait until it has completely cooled down.
Interruptions in engine operation can be associated with a clogged air filter or muffler.The equipment must be turned off, cooled and the parts inspected to clean and remove blockages.

In addition, engine malfunctions can be associated with malfunctions in the carburetor or insufficient oil in it. In this case, the part must be disassembled, inspected and filled with new oil.

A walk-behind tractor with a diesel engine is more difficult to repair with your own hands than a gasoline one, since such a motor has a more complex design. As a rule, possible malfunctions and ways to eliminate them on your own are described in the instructions, so we will focus only on the most common ones.

Diesel engine malfunctions can be associated with such problems:

Clogged nozzle: the part must be removed, cleaned and reinstalled.
Weak fuel injection pressure you can also adjust it yourself, using the instructions for the technique.
Engine cranks too easily with starter: this indicates insufficient compression in the cylinder. To eliminate the malfunction, tighten all the nuts on the cylinder one by one and replace the gasket on its head. It is also necessary to inspect the piston rings, and wash or replace them if necessary.

Malfunctioning starter motor can also cause malfunctioning of the engine. Most often, there are situations when the screws securing the starter housing to the engine housing are loosened. In this case, the starter cord will not return to its original position. To fix the problem, loosen the screws and adjust the position of the cord so that it easily returns to its original position (Figure 6).

Figure 6. Scheme for starter repair

In addition, malfunctions can be associated with wear on the starter spring. It is impossible to repair it, so the worn out part just needs to be replaced.

If you want to master the practical skills of DIY repair, we recommend watching a video that describes the main causes of equipment malfunction and how to fix them.

The video shows the disassembly and assembly of the engine with the replacement of piston rings, as well as lapping and adjusting the valves.

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