The engine of the walk-behind tractor does not gain momentum. Reason

Why does the walk-behind tractor stall under load?

A fairly common problem is that the equipment stalls after 5 minutes of operation. Often the reason is a fuel supply failure and ignition problems. If the equipment stalls during operation, you need to check how well the fuel is supplied:

1. The candle is taken out and examined. It is overdried - this indicates a lack of fuel;
2. There must be enough fuel in the gas tank for the normal functioning of the machine;
3. The condition of the fuel valve is inspected. It may simply be blocked. Sometimes it is enough to open it for further use of the unit.

The walk-behind tractor starts and stalls if there is a problem with the ignition. First you need to check the spark plugs. Wet elements indicate breakdown. It is necessary to re-adjust the ignition system of the equipment.

Resetting is done as follows:

1. The cover is removed, which protects the parts of the ignition system;
2. The engine flywheel rotates until the contacts in the magneto open;
3. A special feeler gauge measures the gap from the “anvil” to the “hammer”;
4. The flywheel rotates until the piston is compressed. The latter must reach its peak;
5. The flywheel turns again until a characteristic knocking sound is heard, which will indicate the operation of the overrunning clutch;
6. The flywheel turns in the other direction until the mark of this element coincides with the mark on the body of the unit;
7. The gap from the interrupting contact to the cam is set to 0.3 millimeters;
8. The cam is fixed with a screw, which is located above the element, and a protective cover is installed in the equipment body.

If the above steps are performed correctly, the walk-behind tractor will not stall under load. When tilted, equipment may stall if there is not enough fuel in the gas tank. The unit must be installed straight and the starter cable removed. If the engine starts, you need to fill the tank with fuel.

Causes of walk-behind tractor malfunctions and ways to eliminate them

Malfunction: walk-behind tractor stalls under load

If the walk-behind tractor operates normally for a few minutes and then stalls, the cause is usually a failure in the fuel supply or problems in the ignition system.

To find out what is the cause of the malfunction of the walk-behind tractor, you must first check how the fuel is supplied:

• take out the spark plug and inspect it - if it is dry, it means there is not enough fuel;
• check whether there is enough fuel in the gas tank of the walk-behind tractor;
• make sure that the fuel tap is open - a closed tap can be a simple reason that the walk-behind tractor stalls.

If the problem is a malfunction of a gasoline walk-behind tractor in the ignition system, it must be re-adjusted as follows:

• remove the cover protecting the ignition system;
• turn the engine flywheel until the contacts in the magneto open;
• using a feeler gauge, measure the distance from the anvil to the hammer;
• turn the flywheel until the piston is compressed to maximum;
• turn the flywheel again until a knock appears, indicating the operation of the overrunning clutch;
• turn the flywheel in the other direction so that its mark coincides with the mark on the body of the walk-behind tractor;
• set the distance from the interrupting contact to the cam to 0.3 mm;
• fix the cam with the screw located above the element;
• install the cover into the walk-behind tractor body.

If the adjustment is made correctly, the walk-behind tractor will not stall during operation.

Malfunction: the walk-behind tractor operates jerkily, intermittently or at reduced power

If a walk-behind tractor with a gasoline or diesel engine begins to work intermittently, you must immediately turn off the unit and begin troubleshooting.

Continuing to work with a faulty walk-behind tractor means leading it to more serious breakdowns.

What to do:

• if the engine of a gasoline walk-behind tractor makes reverse movements, it is necessary to rinse the pump and hoses for supplying fuel and replace the fuel with a higher quality one;
• when the walk-behind tractor operates jerkily due to incomplete warming up of the engine, you need to turn off the engine, let it cool completely, start it and warm it up for ten minutes;
• if engine power has dropped, you need to check and clean the filter system;
• If the ignition magneto wears out, the part must be replaced with a new one.

Malfunction: the walk-behind tractor smokes and stalls, the muffler makes unusual sounds

Possible causes of the malfunction:

• too much motor oil in the fuel;
• the ignition is set incorrectly;
• The fuel in the engine cylinder does not burn completely.

Troubleshooting methods:

• if there is excess oil, drain the fuel, flush the fuel pump and hose system, and add new fuel;
• check that the gap between the electrodes is set correctly;
• if it becomes obvious that the fuel is not completely burned, disassemble the piston system, wash and dry the cylinder, and adjust the carburetor correctly.

Malfunction: the walk-behind tractor starts, but quickly stalls

This malfunction occurs if there are problems with the contacts. What to do:

• clean the candle;
• check the integrity of the wires;
• set the correct distance between the electrodes.

Another reason for the malfunction is that the carburetor is dirty and not enough fuel is supplied. Then you need to replace the fuel and reduce the amount of oil.

Malfunction: the walk-behind tractor stalls when heated

This problem occurs due to excess air entering the carburetor. In case of such a malfunction, the throttle trigger should be squeezed halfway. After starting the engine, you need to give it a good gas before starting work.

If you cannot cope with the malfunctions of the garden walk-behind tractor, the walk-behind tractor stalls, the walk-behind tractor does not start, contact the Alfa-Rost walk-behind tractor repair shop in Rostov-on-Don. We guarantee high-quality repairs of gasoline walk-behind tractors using original components, which are always available in our warehouse.

Why does the walk-behind tractor work intermittently?

There are other faults that are worth considering:

1. The walk-behind tractor engine is running backwards. The reason is often the use of bad fuel. It will not be enough to replace the fuel. The pump and fuel supply hoses are washed;
2. The equipment works in jerks. The engine does not warm up completely. You need to turn off the engine and wait for it to cool completely. Then restart it and warm it up for at least ten minutes;
3. The engine does not pull, therefore the engine power decreases. The filter system is checked and cleaned. The problem can be caused by wear of the ignition magneto. In this case, the part is replaced.

Owners of both gasoline and diesel vehicles may encounter such problems. Regardless of the specifics of the breakdown, you must urgently stop using the unit and start fixing the problem.

Why does the walk-behind tractor shoot into the muffler?

Sometimes the operation of equipment is accompanied by unusual sounds from the muffler.
The walk-behind tractor smokes and stalls. To eliminate such a malfunction, it is necessary to first determine what caused it. Such problems may occur in the following cases:

1. Excess motor oil in fuel. The remaining fuel is drained, the fuel pump and hose system are washed, and new fuel is added;
2. Incorrectly set ignition. It is necessary to check how correctly the gap between the electrodes is set;
3. The fuel in the engine cylinder does not burn completely. In this case, it is necessary to disassemble the piston system, thoroughly wash and dry the cylinder, and adjust the carburetor.

In the above cases, it is not difficult to repair walk-behind tractors yourself. It is important to strictly adhere to the algorithm of actions.

Why does the walk-behind tractor start and stall?

If the equipment starts and immediately stalls, this may indicate the following problems:

1. There may be a large distance between the electrodes, problems with contacts in the electronics, or the spark plug may be dirty. First, the candle is cleaned. Then the integrity of the wires is checked. The normal distance between the electrodes is set;
2. The carburetor may become dirty, too little fuel is supplied. Sometimes it is necessary to change the fuel and reduce the amount of oil. The carburetor is dismantled, disassembled and thoroughly cleaned;
3. If the unit does not pick up speed, this indicates a lack of fuel. Gasoline may simply spill. The defect must be eliminated or the fuel tank replaced;
4. The walk-behind tractor does not develop speed when the gearbox breaks down. This is indicated by the presence of extraneous sound from the gearbox. The malfunction can be eliminated by replacing the oil that lubricates the components.

Why does a walk-behind tractor engine have difficulty starting when hot?

The equipment may stall when heated.
This problem can be resolved relatively easily. This is often caused by excess air being supplied to the carburetor. It is mixed with gasoline and motor oil and acts as a carburetor coolant. So the temperature of the latter is much lower than the temperature of the walk-behind tractor engine. To fix the problem, you need to follow a certain algorithm. It is important to start the engine. To do this, perform the following steps:

1. When starting the engine, the throttle trigger is squeezed halfway;
2. You should not regularly press the gas trigger, as this may cause the engine to flood;
3. After starting the engine with the throttle trigger pressed halfway, you need to throttle it thoroughly. Afterwards you can continue working.

Simple actions will prevent an increase in the load on a heated engine; the main elements and systems are not subject to increased wear. The listed methods will allow you to eliminate any malfunctions with the unit. They are equally effective for owners of the following brands: Agro, Honda, Neva, Cascade.

The walk-behind tractor starts and stalls: causes of malfunction and mechanisms for eliminating them

Owners of either brand new or used motor cultivators are not insured against a situation where the walk-behind tractor starts but immediately stalls at idle.

It can be caused by a number of factors:

1. problems in the ignition system:

• loose or broken electrical contacts;
• spark plug malfunction. They can be installed only after unscrewing and external inspection. If the candle:

• dry - the cause of the malfunction lies in the carburetor, where gasoline is not supplied. It may occur due to clogging of its filter or a separate jet;
• wet - the engine does not develop speed due to an excess of fuel;
• covered with soot - the fact of its failure, which may result in the failure of an ignition spark to form. Testing with electrodes will help you finally verify this;

• after replacing or cleaning the spark plug, the electronics are examined - the integrity of the connections and the wires themselves, which may need repair due to strong vibration;

1. shortage or poor quality of fuel . Often the engine does not gain speed due to an incorrectly prepared fuel mixture or debris in the carburetor. In this case, the repair begins with removing it from the walk-behind tractor body and cleaning it from dirt particles. At the same time, they change the fuel, after draining the old one and washing the fuel tank and supply hoses.
2. Another reason that the walk-behind tractor starts up and immediately stalls, related to gasoline, may be depressurization of the gas tank itself. Very often this is observed after a long period of inactivity (for example, after winter), when the walk-behind tractor has not been used for a long time and has been stored with gross violations. After repairing or replacing the entire fuel tank, the functionality of the device is usually restored;
3. cool weather, which often causes diesel equipment to stall. Therefore, in early spring, experts advise turning on the walk-behind tractor only after pouring hot water into the radiator;
4. gearbox malfunction. The fact that the cultivator does not develop speed and stalls at idle is indicated by a characteristic knocking noise from the gearbox, which occurs against the background of a lack of lubricant.

Repair work

Repair of the walk-behind tractor gearbox and other components is carried out if the engine cannot be brought to rated power.

Circumstances due to which the engine stops functioning normally:

1. Damage to the air filter. The fuel becomes too rich because air does not reach the engine in the required quantity.
2. Fuel is of poor quality.
3. Muffler clogged due to accumulation of combustion products.
4. Incorrect carburetor adjustment.
5. Worn cylinders.

Diesel

It is almost impossible to do diesel repair work yourself.

This is due to the fact that not all types of technology operate on such low-power devices. Therefore, it is recommended to contact a service center for repairs.

Transmission

If you try to repair the walk-behind tractor yourself, you may encounter some problems with the mechanism that is responsible for the power transmission. List of similar faults:

1. Difficulty switching gears as a result of wear of the elements. To eliminate this, replace or adjust the gears.
2. Slipping. Check the tension of the cable that goes to the gearbox from the control lever. When checking the belt, pay attention to the degree of belt wear, deformation and contamination. To fix the problem, the damaged element is adjusted, cleaned, or replaced with a new one. When using a disk, check the quality of the lubricant. If the cause of the problem is dirt, then wipe the disc with gasoline and dry thoroughly.
3. Clutch. They check the same cable that is damaged due to deformation of the discs. To eliminate the breakdown, they are replaced with new ones or oil is added.
4. Extraneous sounds in the gearbox of the walk-behind tractor, appearing due to lack of lubrication. To fix the problem, add oil, which is selected according to the manufacturer’s recommendations. Also, such sounds appear due to loose fastenings and wear of moving elements.

Problems with the gearbox

The gearbox is the most difficult device to repair. Therefore, it is best to turn to professionals for repairs.

As a result, malfunctions occur:

1. Oil leakage due to wear of components, bearings, lack of consumables, etc. To fix the problem, replace the appropriate spare parts.
2. Overheating of the gearbox and gearbox due to worn bearings, which have a low level of lubrication or are of poor quality. To eliminate the problem, remove the old bearings and place new ones. In addition, monitor the level and quality of the oil.

Before repairing parts on a walk-behind tractor, first determine the cause of the breakdown. Thanks to this, the risk of repeated malfunctions in the operation of the equipment is reduced.

Most problems arise due to insufficient inspection and testing of the mechanism, since the instructions for use are not followed.

Why does the walk-behind tractor work intermittently?

Despite the wear resistance of the motor part, it is not protected from malfunctions. The appearance of extraneous noises, jerks, and pauses in its operation are the main evidence that it needs urgent diagnosis and repair.

If the cultivator periodically stalls and does not develop speed, this may be due to:

• insufficient heating of the motor unit, which operates jerkily. A diesel cultivator, like a gasoline cultivator, requires at least 10 minutes to warm up;
• a broken starter cable, which is replaced with a new one instead of repair;
• loosening the screw ties between the starter and the motor;
• malfunctions of the ratchet, which prevents the normal operation of the starting unit;
• failure of the cylinder and pistons;
• low-quality gasoline, which is why the engine does not develop speed, does not develop speed and backfires. The situation can be corrected without repairs: after washing the fuel tank and hoses, they simply switch to new fuel.

It also happens that the engine “does not pull”, which can be seen in the overall productivity of the device.

This can be caused by:

• clogging of filtration components;
• ignition magneto failure.

Other common engine starting problems

What to do if the walk-behind tractor engine runs intermittently and does not develop the required power? There may be several reasons for this behavior:

1. The air filter is clogged.

Air does not enter the carburetor, which means that the fuel does not burn well - the filter needs to be cleaned or replaced.

The remaining fuel and its combustion products form a thick coating on the internal walls of the muffler that must be removed.

1. Carburetor.

In this case, the assembly must be removed, disassembled, and all components must be properly cleaned. After this, the carburetor must be assembled and adjusted correctly.

1. Wear the piston group of cylinders.

Temperature and heavy loads take their toll, and even the strongest metal wears out and deforms over time. Such parts must be replaced immediately, otherwise you may pay for them with irreparable damage to the engine itself.

1. Ratchet or ratchet error

The presence of this problem is indicated by the absence of crankshaft movement when starting the engine. To replace the clutch housing and ratchet, you will need to completely disassemble the starter.

1. Loosen the screws holding the starter housing to the engine housing.

If the starter cord does not return to its original position, it will need to be adjusted. To do this, the screws are unscrewed and the assembly point is set manually to ensure normal return of the cord.

1. The beginning of spring break.

A fairly common reason for the starter cord not reversing is the failure of the starter spring - it will have to be replaced.

The service life of any equipment is significantly increased by proper maintenance of its main units and components. The speed at which worn parts are replaced is very important. Therefore, in case of the slightest failures and malfunctions, they must be corrected immediately - as a result, this will prevent much more serious and costly problems.

Source

Why does the walk-behind tractor stall under load?

The problem when the walk-behind tractor operates with periodic stalls and does not develop speed is perhaps the most common among gasoline and diesel units. If the walk-behind tractor starts and stalls, the main reasons for this phenomenon should be sought in the fuel supply and ignition systems, malfunctions of which may appear after 5 minutes of operation.

If the walk-behind tractor does not develop speed and stalls spontaneously, you need to check:

• aerofilter - if it becomes clogged, its surface is cleaned, washed or blown with a vacuum cleaner.
• quality of refueled fuel;
• ignition system - its diagnosis begins with a spark plug, the external condition of which is used to judge the functionality of the ignition.

In addition to the spark plug, other ignition failures of the walk-behind tractor are:

• incorrect gap between electrodes;
• mechanical damage to the electrical circuit;
• unadjusted angle between the magnetic part and the coil.

Repairing them yourself is allowed if this is provided for in the user manual for a specific walk-behind tractor model;

• muffler - the engine stalls during operation and does not develop speed due to a clogged muffler. To free it from combustion products, it is soaked in water with detergents and, after washing, dried;
• carburetor, the settings of which may be incorrect;
• cylinder-piston parts, due to which the engine does not develop speed under load. This can only be checked with a compression gauge.

It also happens that the cultivator suddenly stalls when tilted in both directions or only to the left or right. Most often this occurs due to insufficient oil level. At the moment of tilt, the lubricant remaining sensor in the crankcase may be triggered, which automatically blocks the motor.

Reasons why the walk-behind tractor does not start and how to eliminate them

There are several reasons why a motorcycle does not start when starting. These include:

• damage to the carburetor (in walk-behind tractors with a gasoline engine);
• malfunction of ignition/glow devices;
• low lubrication level.

When strange changes appear in a motor cultivator and its operation becomes unstable, the carburetor is checked first. In this important unit, the formation of the fuel-air mixture (FA) occurs and its dosing for supply to the cylinders of the internal combustion engine (ICE). And if the jets become clogged, an obstruction occurs in the fuel system, as a result of which the carburetor loses its ability to start the engine. To eliminate the malfunction, the fuel line is repaired: the carburetor is partially disassembled, the pump is washed and the jets are blown through the fuel fitting.

Sometimes the reason that a walk-behind tractor does not start lies in a malfunction of the spark plugs (no spark), which play an important role in starting a carburetor internal combustion engine, or glow plugs, which ensure the start of a diesel engine. If the igniter devices become wet, which happens due to fuel assemblies being thrown into them, then the spark begins to disappear on them. In the absence of sparking, the air-fuel mixture does not ignite, and therefore the engine cannot start. This problem can be solved in different ways:

Motorized equipment does not start due to damage to the glow plugs. In a diesel engine, fuel ignition occurs from contact with hot air, which is heated in the cylinder through compression by the piston. This happens without problems when the diesel engine has already warmed up and the operating temperature in it is maintained by the heated cylinder walls. But in cold weather, and especially in winter, the engine is heated using incandescent devices and, if they fail, it will not be possible to start tractor .

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If, upon inspection of a carburetor engine or diesel engine, no defective spark plugs were identified, but the problems remain, and are even accompanied by popping noises in the muffler, you should check the functionality of all devices responsible for the flammability of the fuel. A malfunction in them can also be the reason that the walk-behind tractor does not start. It is better to carry out diagnostics at a service center, where professionals will find the cause of the damage and competently carry out repairs.

The motorcycle will not start even if the level of lubricant in the engine is insufficient. Some models are equipped with special control sensors, which, in the event of a lack of lubrication, prevent the engine from starting. Particular attention should be paid to those machine options that do not have such sensors. Sooner or later, the level of the lubricant mixture will reach a critical value and, if it is not replenished to normal, this will soon lead to wear of parts and, as a consequence, to a major overhaul of the engine.

Ignition system repair

You can judge the breakdown of devices for igniting fuel assemblies by the signs when the engine:

• starts, but stalls at idle;
• does not start even with good fuel supply;
• It works at idle, but with some interruptions.

To find out the cause, first check the condition of the spark plugs and, if there is damage to the insulator, replace them. Next, inspect the electrodes and, if necessary, adjust the gap between them. The condition of high-voltage wires is checked for oxidation of the tips and damage to the insulation - damaged wires must be replaced with new ones. Without such repairs, the spark may completely disappear or will travel through the insulation, breaking through to the engine body, and will not be able to ignite the fuel assembly.

If at this stage no defect with a spark is detected, then perhaps the reason that the equipment does not start or stalls lies in the generator or coil (for models such as Neva, Cascade, it serves to generate a spark). To check the generator, a measuring device is connected to its terminals. Scroll the starter pulley of the walk-behind tractor and record the readings of the device - they should be in the range of 12-16 W. If the indicators are normal, then the reason lies in the ignition coil, and after replacing it, you can put a load on the engine. Most likely, after such repairs, its functionality will resume completely.

Why does the walk-behind tractor shoot into the muffler?

Often, if the engine system malfunctions, the walk-behind tractor not only does not develop speed, but also produces obvious, ear-piercing sounds emanating from the muffler. After this, it smokes and stalls, which clearly causes concern to users.

The cause of this problem may be:

• excessive intake of oil into gasoline or diesel, due to which its combustion is accompanied by the release of unnaturally acrid smoke. In this case, the repair consists only of cleaning the fuel system and refueling with high-quality fuel;
• failure to adjust the ignition or failure of its components - first of all, pay attention to the gap between the electrodes and, if necessary, set it in accordance with the operating instructions;
• incomplete combustion of fuel in the engine cylinder. In this case, repair of the walk-behind tractor engine begins with disassembling the entire cylinder-piston group, which is cleaned and checked for defects. It must be remembered that after such manipulations it will not be superfluous to reconfigure the carburetor.

Types of malfunctions of walk-behind tractors

Sometimes the walk-behind tractor begins to act up due to some problems. However, you can easily fix them yourself without turning to specialists for help. To do this, you will need to carefully study the technical parameters of the system, after which you can begin repairs.

The main malfunctions of the device are:

• engine operation with minor interruptions;
• failures due to which the unit stops working completely, etc.

If such violations occur, repair work is carried out immediately.

What to do if the walk-behind tractor engine does not start well when hot?

If the walk-behind tractor does not develop speed when hot, fault diagnosis is carried out in the following sequence:

• after several unsuccessful startup attempts, the spark plug is examined as described above. If possible, it is better to immediately replace it with a new one in order to completely eliminate questions on this point;
• check the compression and vacuum level in the gas tank;
• in a dark room, see if the wiring is sparking;
• make sure that when heated, a spark is definitely formed. In addition to the spark plug, a faulty ignition coil can also prevent sparking.

Other causes of malfunction include:

• lack or incorrect filling of oil, due to which the triggered oil level sensor blocks the operation of the engine part;
• failure of the valve in the fuel tank, which is supposed to maintain gasoline pressure. As a result, its liquid contents do not flow into the carburetor.

Repairing walk-behind tractors, and especially their power plant, is a responsible matter that requires literacy and good dexterity. This applies not only to domestic favorites - the Neva, Cascade, Agro walk-behind tractors, but also imported ones, for example, Honda. But this does not mean that repairing them yourself is impossible. Having a minimum amount of knowledge and following our recommendations above, you can eliminate any malfunctions at home.

The main problems of the walk-behind tractor engine

It is impossible to give an answer to such a seemingly simple question offhand. There are many reasons why the walk-behind tractor becomes capricious and stalls during operation. Conventionally, they can be divided into several groups:

• problems with fuel supply;
• malfunction of the engine starting system;
• control and automation malfunctions;
• problems with the muffler, cooling, etc.

If you notice problems in the operation of the walk-behind tractor, then the main thing you must understand is that there are problems that you can easily fix with your own hands, even if you are not particularly versed in technology, and there are situations when it is impossible to do without a competent specialist and appropriate equipment. The most important task for you, as the owner, is to quickly and correctly determine why your walk-behind tractor is stalling and make the right decision.

Repair: why the walk-behind tractor stalls under load, shoots into the muffler, works intermittently, and more

A walk-behind tractor is one of the most useful household units. Even a simple and not particularly powerful machine can make caring for your garden and surrounding area much easier. At the same time, a walk-behind tractor is a piece of equipment that tends to break down. Let's look at the most common breakdowns of an agricultural unit, their causes and methods of eliminating them on our own.

Why does the walk-behind tractor stall under load?

Almost every owner of a walk-behind tractor, regardless of the brand and model of the agricultural machine, has encountered a problem in which the walk-behind tractor starts and stalls after 5 minutes of operation. The main reasons for this breakdown lie in problems with the fuel supply and breakdown of the car’s ignition system.

As practice shows, if a walk-behind tractor stalls during operation, its owner should immediately inspect the parts of the fuel supply system. First of all, unscrew and look at the spark plug - if it is completely dry, this indicates that fuel is not getting into the engine cylinder. After this, you need to make sure that there is a sufficient amount of fuel in the fuel tank. If there is gasoline and there is enough of it for work, inspect the fuel valve - it is quite possible that it is in the closed position. To start the walk-behind tractor, just open the fuel tap and continue working with the unit.

Another reason why the walk-behind tractor starts up and then stalls after 5 minutes of operation is a breakdown of the ignition system. It is quite simple to determine that the unit is faulty for this very reason - look at the spark plugs - if they are wet, it means that the fault has appeared in the ignition system of the walk-behind tractor. The best way out of this situation is to re-adjust the unit’s ignition system. All actions must be performed in this order:

1. Remove the cover that protects the elements of the ignition system;
2. Turn the motor flywheel until the contacts in the magneto open;
3. Using a special feeler gauge, measure the gap between the “anvil” and the “hammer” of the walk-behind tractor’s ignition system;
4. After this, turn the flywheel until the piston of the walk-behind tractor compresses. In this case, the latter must reach its highest point;
5. Turn the flywheel again until you hear a characteristic knock - this means that the overrunning clutch has engaged;
6. Then turn the flywheel in the opposite direction so that the mark on it coincides with the mark on the walk-behind tractor body;
7. Set the gap between the interrupting contact and the cam - it should be 0.3 mm;
8. At the end, fix the cam with a screw located on top of the part and install the protective cover back into the walk-behind tractor body.

After the above steps, the walk-behind tractor will no longer stall under load. The main thing when similar problems arise in the future is to try to fix the breakdown as quickly as possible, so as not to subject the main mechanisms of the walk-behind tractor to increased wear.

Also, the utility unit often stalls when tilted. This indicates an insufficient amount of fuel in the fuel tank. If you put the unit in a horizontal position, pull out the starter cable, and the engine starts, it means that you will need to add gasoline to the tank.

Fuel emissions

If an attempt to start the walk-behind tractor fails, this means that there is a malfunction in the engine or starting system. To determine the source of the problem, first check the spark plugs.

If the spark plugs are dry, this means that the fuel mixture is not entering the engine cylinders. There may be several reasons:

• There is no fuel in the tank;
• The fuel supply valve is closed;
• The hole in the gas tank plug is clogged;
• Foreign objects enter the fuel supply system.

To eliminate problems with fuel supply, you must:

1. Fill the walk-behind tractor tank.
2. Open the fuel valve.
3. Clean the drain hole in the gas tank plug.
4. Remove the fuel valve, drain the gasoline from the tank and rinse it with clean gasoline. Then remove the connecting hose located on the carburetor side and blow it out along with the carburetor nozzles without disassembling the latter using the fuel pump.

READ How to increase the engine power of a walk-behind tractor

Why does the walk-behind tractor work intermittently?

Among other typical malfunctions of a walk-behind tractor, a number of such breakdowns can also be identified:

• The engine of the unit backfires - this indicates the use of low-quality fuel to refuel the unit. In this case, you will have to not only replace the fuel, but also thoroughly rinse the fuel pump and fuel supply hoses;
• The walk-behind tractor operates jerkily - the reason for this lies in insufficient warming up of the engine. Be sure to turn off the engine, wait for it to cool completely, and start the engine again, giving it at least 10 minutes to warm up completely;
• The motor of the walk-behind tractor does not noticeably pull, the engine power has decreased - in this case, you need to check and, if necessary, clean the air and fuel filters. Another reason for this breakdown lies in the wear of the magneto of the ignition system. It is best to replace the part immediately without attempting to restore it.

Why does the walk-behind tractor shoot into the muffler?

Often, when working with an agricultural implement, loud, uncharacteristic sounds are clearly audible from its muffler. At the same time, the walk-behind tractor also smokes heavily and stalls. To be able to fix a problem with your own hands, you first need to determine its essence.

Most often, a walk-behind tractor shoots into the muffler due to a number of the following problems:

• There is an excess of engine oil in the fuel mixture - in this case, you need to drain the remaining fuel, wash the fuel pump and hoses, and fill in new fuel with less oil;
• Incorrectly set ignition - if the mechanism works late, this leads to the appearance of atypical shots, which are clearly audible in the muffler area. In such a situation, you should immediately set the correct gap between the electrodes of the walk-behind tractor's ignition system;
• Incomplete combustion of fuel in the engine cylinder. Repairing a walk-behind tractor engine in this case involves disassembling the piston group, thoroughly washing and drying the engine cylinder, as well as adjusting the walk-behind tractor carburetor.

Repairing all of the above breakdowns does not require special skills or extensive experience. The most important thing is to act strictly according to the operating instructions for the agricultural unit.

DIY walk-behind tractor repair

Unfortunately, any equipment sometimes breaks down, so its owner needs to be able to troubleshoot problems on his own. Of course, if the car is under warranty, it is better to take it to a service center, where specialists will carry out warranty repairs free of charge.

Often, damage to a cultivator or walk-behind tractor occurs due to improper operation: they fill with bad fuel, allow heavy loads, or do not replenish the loss of lubricant in a timely manner. Then the car begins to stall, stall, pick up speed poorly (especially if it has an electric motor), or even stops starting altogether. But, knowing the structure of the unit and the operating principle of its mechanisms, you can identify the cause of the damage yourself and carry out quality repairs.

Fuel system repair

A breakdown of the fuel system can be confirmed if the engine:

To eliminate the malfunction, first check the condition of all filters, including air and oil. If they are slightly clogged, blow them with compressed air or wash them; if they are heavily soiled, replace them with new ones. Then the carburetor is disassembled, the parts are washed with a special cleaner, and the fuel mixture supply valve, tank and piston system are cleaned with gasoline. After drying, carefully carry out the reverse installation.

After the engine is completely assembled, the crankshaft is cranked by hand - it is important that the piston moves freely and the valves work flawlessly. Then pour in fresh lubricant, start the engine and leave it to idle. Be sure to check the flow of fuel into the cylinder. Perhaps, after such repairs, the cause of the malfunction will be eliminated, and the walk-behind tractor will begin to function without interruption.

The walk-behind tractor starts and stalls - causes and repairs

Repairing walk-behind tractors if they start and, after a few seconds, stall, must begin by searching for the main causes of this malfunction. To do this you need to inspect:

• Plugs, wires and electrodes - in most cases, the unit starts and immediately stalls due to too large a gap between the electrodes of the ignition system, poor contact between the wires, and a dirty spark plug. Repairs should begin by cleaning the spark plug. If this does not help, then you need to check the integrity of the wires. If this does not bring the desired result, then you will need to re-adjust the gap between the electrodes of the ignition system;
• Carburetor for contamination and sufficient fuel supply - if you used low-quality gasoline and added too much motor oil to it, you will need to replace the fuel and reduce the amount of oil. In addition, you need to dismantle, disassemble, and thoroughly clean the carburetor;
• The presence of gasoline in the fuel tank - if the walk-behind tractor does not gain speed, this often indicates a lack of fuel necessary for the proper operation of the engine. Very often, owners of walk-behind tractors are faced with a problem in which gasoline spills through a small hole or crack in the fuel tank of the machine. In this case, you need to try to repair the defect, and if this fails, you will need to completely replace the walk-behind tractor tank.

Another less common cause of a breakdown, in which the walk-behind tractor does not develop speed, is a malfunction of the gearbox, which is indicated by an extraneous sound from the gearbox. To fix the breakdown, you need to replace the oil that you use to lubricate the unit.

Causes of engine malfunctions

Violations in the operation of the system are divided into two categories:

1. Complete engine stop and failure to start.
2. Interruptions in the mechanism when it cannot gain rated power, which is why it stops randomly.

The first group corresponds to the following circumstances:

• malfunction of the fuel valve;
• problems with the carburetor damper;
• difficulties with the ignition system;
• fuel is poorly supplied to the engine power system unit;
• there is no fuel or its supply has been stopped.

To determine their presence, you need to unscrew the spark plug and carefully inspect it. There shouldn't be any gasoline on it. Its presence indicates problems with the fuel supply. If it is not there, then the old, worn-out spark plugs are replaced with new ones.

To check the fuel supply, disconnect the hose from the carburetor and look at the stream. Obvious malfunctions are indicated by a weak jet or its absence. It is possible that one of the causes of the breakdown is a clogged fuel filter.

Walk-behind tractor engine is difficult to start when hot

The question of why the motor of a walk-behind tractor stalls when heated is quite simple to solve. The whole essence of the problem lies in the excess air supplied to the carburetor of the walk-behind tractor. Part of it is mixed with a mixture of gasoline and motor oil, and the second part cools the carburetor. As a result, the carburetor temperature becomes much lower than the temperature of the unit’s engine. This problem is observed only during the operation of the walk-behind tractor. When its engine is turned off, the carburetor, on the contrary, is heated by the hot walls of the engine.

As the carburetor of the walk-behind tractor heats up, the remaining fuel begins to actively evaporate, filling all the voids in the walk-behind tractor, including the air filter and the intake manifold. This leads to the complete disappearance of fuel, which is why the walk-behind tractor will not start when the engine is hot.

To fix this problem, it is necessary to follow a certain algorithm every time you start the walk-behind tractor “hot”. Your main task is to ensure that the mixture combines so that the engine can start. To do this you will need:

1. When starting a hot engine, squeeze the throttle trigger halfway;
2. Do not try to press the gas trigger over and over again, otherwise you will only aggravate the situation, since when you press the gas trigger frequently, the fuel pump will supply new portions of fuel to the carburetor, which will lead to flooding of the engine;
3. After several attempts to start with the gas trigger pressed halfway, you will start the engine of the walk-behind tractor, after which you will need to rev it up 2-3 times and continue working.

This procedure will eliminate the increased load on the hot motor, due to which the main parts and mechanisms of the walk-behind tractor will not be subject to excessive wear.

All of the above methods will help to effectively cope with typical breakdowns of the most famous manufacturers of walk-behind tractors. They are equally successfully used by owners of agricultural implements of the Honda, Agro, Cascade and Neva brands.