DIY gas handle repair

An indispensable tool for a modern summer resident or owner of a private house is a petrol cutter, which allows you to effectively and efficiently put the adjacent territory in order. The period of active use of brushcutters is in late spring until October. Modern units are equipped with powerful and durable internal combustion engines, reinforced transmission and main components. Despite this, physical wear, manufacturing defects or improper operation lead to failure of the trimmer. In order to repair the trimmer with your own hands, you must have at least basic knowledge in the field of technology and little experience in repairing it.

The main unit of any gasoline tool is the internal combustion engine (ICE), which, through various methods, transmits torque to the actuator. In a modern petrol cutter, a duralumin rod (pipe) is used as a transmission element between the engine and the trimmer head, inside which the drive shaft is located.

Thanks to the high-revving engine, the line speed can reach 13 thousand revolutions per minute, depending on the manufacturer of the scythe. In order to exclude mechanical and thermal damage to the gearbox, a special hole is provided in its housing for the introduction of grease in the form of ointments. To make the headset easier for the owner during long-term work, all brushcutter models are equipped with a durable shoulder strap.

Regardless of the manufacturer, almost every model comes with a line and steel knives.

The cross-section of PVC trimmer line can vary from 1.5mm to 3.0mm.

Made of durable polymer, it is subject to intense wear and tear during mowing. Therefore, from time to time it is necessary to check the presence of a fishing line in the head and, if necessary, replace it. It is recommended that you purchase an extra bobbin to quickly replace it with a spool with no line.

ICE trimmers on the market today are equipped with a D-shaped, U-shaped or T-shaped handle, where the main controls of the unit are located. For example, in a braid with a U-grip, the throttle key and stop / start toggle switch are located on the right grip. In the D-shaped version of the handle, the throttle control button is located directly on the rod.

Due to the presence of many components and parts, repairing a trimmer with your own hands means eliminating breakdowns that prevent its normal operation. It should be noted the most basic malfunctions of gasoline streamers:

1. The trimmer motor is not picking up speed;
2. Breakdown of the cylinder-piston group (CPG);
3. Ignition malfunctions;
4. There is no connection between the internal combustion engine and the trimmer head;
5. Mechanical knocking during unit operation.
6. Repair of the central piston group petrol cutters

The main unit of any internal combustion engine is the cylinder-piston group (CPG), which can fail due to wear of parts of parts or poor quality of the fuel mixture.

Lubrication of rubbing units in a petrol cutter is carried out by adding a certain proportion of oil to gasoline. This process can be disrupted due to old oil precipitating out. In this situation, when the trimmer is started, the motor overheats and in a matter of minutes the most expensive breakdown occurs. To eliminate the malfunction that has arisen, a complete replacement of the CPG will be required, namely: the piston, oil seals, cylinder and piston rings.If you are not an ICE repair technician and do not have experience working with technicians, then you will hardly be able to fix the engine without the help of a specialist. Details on the stages of piston trimmer repair can be found here.

If the ignition of the petrol mowers fails, the spark on the candle disappears and, as a result, the fuel mixture does not ignite.

Spit spark plug design

In this situation, it is quite important not to rush to replace the coil, since the cause of the breakdown may lie in the lack of contact in the switch on the control handle.

An important point when troubleshooting the trimmer ignition will be the diagnostics of the section, where the distance between the side and center electrodes should be 0.5-0.7 mm. In addition, it is necessary to pay attention to the steel O-ring on the spark plug, the loss of integrity or deformation of which can lead to etching of air from the combustion chamber and, as a consequence, reduce the power of the streamer.

Ignition flywheel with coil

If the replacement of the check of the electrical circuit, the spark plug and its contacts did not give positive results, then you should pay attention to the trimmer ignition module, namely the clearance with the flywheel. Regardless of the design features and the manufacturer of the brushcutter, the distance between the ignition coil and the flywheel should be no more and no less than 0.2 mm. To restore the optimal value of the gap, you will need to loosen the coil mounting bolts and set the trimmer ignition with a special measuring probe.

A clear sign of a malfunction of the engine power system is the absence of traces of the fuel mixture on the spark plug electrodes, which may be associated with the following defects:

Trimmer Fuel System Components

• due to a clogged hole in the gas tank, a vacuum is created, which prevents the normal flow of gasoline into the carburetor;
• due to the poor quality of the fuel and the ingress of foreign particles, the fuel filter installed in the tank is clogged;
• non-flow of the mixture into the combustion chamber as a result of a clogged carburetor.

You can quickly determine the cause of the malfunction by dismantling the fuel hose leading to the carburetor. If the fuel mixture flows out in a thin stream, then you should pay attention to the carburetor. If there is no jet, it is necessary to clean the breather with a thin needle (a small hole in the gas tank cap) or replace the fuel filter.

If fuel enters the carburetor, it must be cleaned or adjusted. Adjusting the carburetor trimmer means restoring optimal fuel mix.

Trimmer carburetor with adjustment screws

To do this, pay attention to three adjusting screws: maximum speed (H), minimum (L) and idle speed (LA). To start the adjustment, you need to fully tighten the screws H and L and loosen one turn each. Then we start the braid and let it warm up for 10 minutes to adjust the power system in operating mode. After warming up the internal combustion engine, press the gas supply button until it stops (12,000 rpm). We restore the idling mode by unscrewing the screw LA. As soon as the trimmer head starts rotating, tighten the screw until it stops.

One of the common faults of the petrol mowers is the incorrect operation of the internal combustion engine, namely the drop in power with increasing speed (the scythe stalls).

The reason for this is that the exhaust system is clogged with burnt oil particles. Often manufacturers make mufflers prefabricated and cleaning is quite simple. If the design of the spark arrester is non-separable, then it must be placed in water with detergents, and then dried with an ordinary or industrial hair dryer. Frequent clogging of the exhaust system indicates non-observance of the proportions of oil and gasoline.

Tips for repairing petrol cutters do it yourself... How to repair a starter: video with a step-by-step description of the work.Tips from the professionals in the service center.

The benzokos is one of the main tools of the summer resident, used to quickly put the land in order. Owners of private houses also purchase this tool for mowing grass in the backyard. The period of active use of petrol cutters and electric trimmers is in the summer. Petrol trimmer carburetor adjustment video. Before starting operation, the tool is brought into working condition: rubbing parts are lubricated, the cutting attachment is changed, a fuel mixture is poured into the tank. If the engine does not start at all or stalls quickly, without gaining a sufficient number of revolutions, then you have to look for the causes of the malfunctions and eliminate the identified malfunctions. To carry out repairs petrol cutters with their hands, you need to understand its structure and the principle of operation of the main units. This information can be found in the instructions for use, which the manufacturer applies to the garden equipment without fail. Assembly engine petrol cutters video. Check for such a guide when purchasing your chainsaw. The imported tool must be accompanied by instructions written in Russian.

A long tubular rod is attached to the gearbox of a two-stroke internal combustion engine. A shaft passes inside the rod, which transfers torque from the gasoline engine to the cutting mechanism. The line or knives rotate at 10,000 to 13,000 rpm. Carburetor adjustment petrol cutters calm. There are holes in the protective housing of the gearbox, into which grease is injected with a syringe. For the convenience of using the tool, the manufacturer equips it with a special adjustable shoulder strap.

A cutting attachment is attached to the brushcutters:

• The line, which varies in thickness from 1.6 to 3 mm, is located in the trimmer head. The line is subject to wear during mowing. Changing the line is quick and easy in two ways: by winding a line of the same diameter onto a bobbin or by installing a new spool with line already wound.
• Steel knives with double-sided sharpening for the benzokos for clearing the area from weeds, small bushes, hard grass. Knives differ in shape and the number of cutting surfaces.

On the U-shaped, D-shaped or T-shaped handle, which is attached to the boom, there are the petrol cutter control levers. The cutting mechanism is protected by a special casing. Household brushcutters are filled with a mixture prepared from gasoline and oil, which is poured into the fuel tank. The device of semi-professional and domestic brushcutters, equipped with a four-time gasoline engine, is slightly different. Carburettor adjustment of Eurosport petrol cutters. The filling scheme is also different: oil is poured into the crankcase, and gasoline is poured into the tank.

The measured piece of fishing line is folded so that one end is 15 cm longer than the second.We put the loop into the slot on the spool and start winding in the direction indicated by the arrow

If you cannot start the petrol cutter, then the first step is to check the presence of fuel in the tank and its quality. For refueling the tool, it is recommended to use high-quality gasoline purchased at gas stations, the grade of which should not be lower than AI-92. Saving on cheap fuel can lead to a breakdown of the cylinder-piston group, the repair of which can take a third of the cost of the brushcutter itself. It is equally important and correct to prepare the fuel mixture from gasoline and oil. The proportional ratio of these components of the mixture is indicated by the manufacturer in the manual. It is not necessary to prepare the fuel mixture in large volumes, since its properties are lost during long-term storage. Better to use a freshly prepared mixture.

When preparing the fuel mixture, pour oil into gasoline using a medical syringe, which allows you to accurately observe the required proportion of components

The benzokos is one of the main tools of the summer resident, used to quickly put the land in order. Owners of private houses also purchase this tool for mowing grass in the backyard. The period of active use of petrol cutters and electric trimmers is in the summer. Before starting operation, the tool is brought into working condition: rubbing parts are lubricated, the cutting attachment is changed, a fuel mixture is poured into the tank. If the engine does not start at all or stalls quickly, without gaining a sufficient number of revolutions, then you have to look for the causes of the malfunctions and eliminate the identified malfunctions. To repair a petrol brush with your own hands, you need to understand its structure and the principle of operation of the main units. This information can be found in the instructions for use, which the manufacturer applies to the garden equipment without fail. Check for such a guide when purchasing your chainsaw. The imported tool must be accompanied by instructions written in Russian.

A long tubular rod is attached to the gearbox of a two-stroke internal combustion engine. A shaft passes inside the rod, which transfers torque from the gasoline engine to the cutting mechanism. The line or knives rotate at 10,000 to 13,000 rpm. There are holes in the protective housing of the gearbox, into which grease is injected with a syringe. For the convenience of using the tool, the manufacturer equips it with a special adjustable shoulder strap.

A cutting attachment is attached to the brushcutters:

• The line, which varies in thickness from 1.6 to 3 mm, is located in the trimmer head. The line is subject to wear during mowing. Changing the line is quick and easy in two ways: by winding a line of the same diameter onto a bobbin or by installing a new spool with line already wound.
• Steel knives with double-sided sharpening for the benzokos for clearing the area from weeds, small bushes, hard grass. Knives differ in shape and the number of cutting surfaces.

On the U-shaped, D-shaped or T-shaped handle, which is attached to the boom, there are the petrol cutter control levers. The cutting mechanism is protected by a special casing. Household brushcutters are filled with a mixture prepared from gasoline and oil, which is poured into the fuel tank. The device of semi-professional and domestic brushcutters, equipped with a four-time gasoline engine, is slightly different. The filling scheme is also different: oil is poured into the crankcase, and gasoline is poured into the tank.

The measured piece of fishing line is folded so that one end is 15 cm longer than the second.We put the loop into the slot on the spool and start winding in the direction indicated by the arrow

If you cannot start the petrol cutter, then the first step is to check the presence of fuel in the tank and its quality. For refueling the tool, it is recommended to use high-quality gasoline purchased at gas stations, the grade of which should not be lower than AI-92. Saving on cheap fuel can lead to a breakdown of the cylinder-piston group, the repair of which can take a third of the cost of the brushcutter itself. It is equally important and correct to prepare the fuel mixture from gasoline and oil. The proportional ratio of these components of the mixture is indicated by the manufacturer in the manual. It is not necessary to prepare the fuel mixture in large volumes, since its properties are lost during long-term storage. Better to use a freshly prepared mixture.

When preparing the fuel mixture, pour oil into gasoline using a medical syringe, which allows you to accurately observe the required proportion of components

A dirty fuel filter in the tank can also prevent the brushcutter from operating. Therefore, if problems arise with starting the motor, check the condition of the filter. Replace the filter if necessary. Do not leave the inlet pipe without a fuel filter.

The air filter also needs to be checked. When contaminated, the part is removed, washed in gasoline in the field and put in place. In the country or at home, the filter can be washed in water using detergents. After that, the filter is rinsed, wrung out and dried. The dried filter is moistened with a small amount of oil used to prepare the fuel mixture. Excess oil is removed by squeezing the filter with your hands. Then the part is installed in place. The removed cover is put back and secured with screws.

The air filter, washed in a fuel mixture, wrung out and dried, is installed in place in a plastic case and closed with a lid.

You can see how this procedure is done in more detail in the video:

If all of the above procedures are carried out, and the engine does not start, then adjust its idle speed by tightening the carburetor screw. In the video posted at the beginning of the article, attention is paid to this issue.

1. Place the tool on its side with the air filter at the top. This arrangement of the chainsaw ensures that the fuel mixture hits the bottom of the carburetor. The engine will start on the first attempt if you remove the air filter and pour a few drops of the mixture into the carburetor before starting, then reinstall the dismantled parts. The method has been tested in practice.
2. If the first tip doesn't work, then the problem is most likely in the spark plug. In this case, unscrew the plug and check its functionality, and also dry the combustion chamber. Replace the candle that does not show signs of life with a new one.
3. If the spark plug is in good working order, the filters are clean and the fuel mixture is fresh, then you can use the universal method of starting the engine. Close the carburetor choke and pull the starter handle once. Then open the choke and pull the starter 2-3 more times. Repeat the procedure three to five times. The engine will definitely start.

Some pull the handle with such force that they have to repair the starter of the petrol cutter with their own hands. This is only possible if the cable breaks or the cable handle breaks. In other cases, it is recommended to replace the starter. This unit is sold assembled.

• Stop the engine and wait for it to cool down.
• Disconnect the high voltage wire from the spark plug.
• Unscrew the part using a special wrench.
• Inspect the spark plug for replacement. The part changes if it is faulty, heavily soiled, has a crack on the case.
• Check the electrode gap. Its size should be 0.6 mm.
• Tighten the new spark plug inserted into the engine with a wrench.
• Install the high-voltage wire to the center electrode of the spark plug.

As you can see, there is nothing super complicated in this procedure.

A new spark plug for a two-stroke internal combustion engine of a gasoline streamer is installed to replace the old part that is out of order

After starting, the engine may stall if the carburetor is incorrectly tuned or misaligned. What are the signs that you can understand that the reason really lies in this? It is very simple, by the vibrations that will be clearly felt when the mower is running. You can adjust the fuel supply with your own hands by following everything that is written in the operating instructions for the tool.

The engine may stall due to a clogged fuel valve. The cause is eliminated by cleaning it. If the brushcutter starts up and then suddenly stalls, it means that the fuel supply to the carburetor is difficult.Loosen the carburetor valves to ensure that the correct amount of fuel can flow to it.

Excessive air intake can also stall the engine. Increase engine revs to allow air bubbles to escape faster from the unit's fuel system. Also, be sure to check the integrity of the fuel intake hose. If you find mechanical damage (cracks, punctures, etc.), replace the part.

During the period of operation of petrol cutters, monitor the condition of the engine cooling system. The channels in the starter housing and the cylinder fins must always be clean. If you ignore this requirement and continue to operate the brushcutter, you can damage the engine due to overheating.

Competent care of the gasoline scythe during operation allows you to use it for several seasons in a row without major repairs

Allow engine to cool before cleaning. Take a soft bristled brush and clean the outside of the dirt. Cleaning of plastic parts is carried out with solvents, including kerosene, or special detergents.

At the end of the summer season, the brushcutter must be prepared for long-term storage. For this, the fuel mixture is drained from the tank. The engine is then started to use up fuel residues in the carburetor. The entire tool is well cleaned of contamination and goes to "hibernation".

As you can see, it is possible to repair the faults of a household petrol cutter on your own. It is worth contacting service departments in case of serious breakdowns. In this case, the cost of repairs should be correlated with the price of a new petrol cutter. It may be more appropriate to buy a new instrument.

Very often, complaints from owners of gasoline trimmers are associated with various kinds of carburetor malfunctions. Of course, in this case, it is best to seek help from specialists in this field, for whom the repair of carburetors of gasoline trimmers is an integral part of the profession. However, if you are still familiar with the basic principles of the trimmer carburetor, you can try to figure out the problem yourself, so as not to overpay money in the service, since sometimes the breakdown can be really frivolous.

This article is just intended to help you deal with the problem.

Next, we will analyze the most common breakdowns and the reasons for their occurrence.

The first step is to generally inspect the carburetor and find out if there is any fuel leakage.

If it turns out that there are no problems with fuel, it is necessary to remove the carburetor from the engine and check the condition of the gasket located next to the carburetor.

If no malfunctions are observed here, you can try to check the carburetor for tightness.

To do this, you can purchase a special device, which is part of the tool kits for repairing the carburetor repair of mowers and representing a special pressure gauge that, in fact, checks the tightness.

If you don't want to spend money on its purchase, you can use a conventional medical tonometer, on which you just need to change the pressure gauge.

When using this device, pay attention to the indication.

If the pressure does not drop and remains the same for a long time, you can rest assured, as this indicates the tightness of the carburetor.

If the pressure begins to decrease after a certain time, then there are still problems.

They can be associated with damage to any parts of the carburetor.

Before running to the nearest repair shop or specialty store selling trimers and spare parts, try to figure out the problem yourself.Sorry for the banality, but the brushcutter carburetor is not a spaceship of an extraterrestrial civilization, and it is quite possible to repair it with your own hands. To be confident in your actions, read the step-by-step instructions provided in this article.

A visual inspection of the carburetor will help detect fuel leakage and air leakage, but the main reasons for the failure of the device lie inside. Therefore, in order to determine and most importantly fix the breakdown, the carburetor must be disassembled.

It does not take much effort to disassemble the carburetor of the brushcutter.

It is enough to unscrew four screws on one side

and two on the other. This can be done using a regular Phillips screwdriver. Unscrew the screws carefully and fold them to the side. They may be needed during assembly. It is advisable to cover the table with a white cloth before disassembly so that everything is visible, even the smallest details that may fall out during disassembly.

We start disassembling from the side of the fuel supply system.

We remove the primer - a pumping bubble, which is remarkable, it is simply impossible to install the carburetor parts incorrectly during assembly. Products have characteristic ebb and flow.

Now we remove the membrane. It is she who performs the function of pumping fuel into the carburetor.

When the membrane vibrates, the other side exerts pressure on the rocker arm of the mechanism and the needle rises, which, in turn, opens the hole and fuel is supplied.

Remove the carburetor cover with the injection mechanism.

Further, another membrane is installed. We carefully remove it.

There is another gasket under the membrane. We also carefully remove it, without damaging it in any way.

Next, we move on to dismantling the parts from the back of the carburetor. As mentioned earlier, we unscrew the two bolts. This is already an air supply system.

A valve is located here, which, when gas is added, opens and increases the flow of air into the engine.

After removing it, a bare body remains in the hands. The carburetor is disassembled.

Identification of faults and their elimination

Now it is worth paying attention to the problems that occur during the operation of the carburetor and how to fix them.

The first thing that happens is that the holes and jets in the fuel supply system are clogged with dirt. Filters installed in the tank and directly in the carburetor do not help. They still allow small particles to pass through, which cause brushcutter failure.

Now we need to get the needle.

To do this, unscrew the bolt on the mechanism, holding it with your finger. The fact is, there is a spring there and a careless action will lead to the fact that it is lost.

We take out the needle, see photo and spring.

How to purge. The most effective way is to use an ultrasonic bath.

It is filled with either a special liquid or gasoline, a carburetor is placed there and under the action of ultrasound, the so-called cavitation effect, the channels are cleaned of contamination.

The second option for cleaning is compressed air.

You can use the compressor available on the farm and clean the carburetor channels. However, this method is effective if the contamination is not very large.

If there is neither an ultrasonic bath nor a compressor at hand, then cleaning can be done in the third way using a special cylinder for cleaning the carburetor. They are sold in almost all car dealerships and supermarkets. The price is not high and is about $ 2-3. Enough of such a cylinder for 4 or 5 purges.

Now we need to blow through the channels in the body and carburetor cover. See photo.

Another particle of dirt can get stuck under the needle. See photo. This will also lead to brushcutter failure.

Important! When cleaning the carburetor, never use needles, pins or wires. Even the slightest scratch will damage the carburetor. It will have to be changed entirely.

It is located on the carburetor cover and is a fine metal mesh. Its pollution occurs very often.This is due to the deposition of oil, additives, dirt on it.

Sometimes, when disassembling on the nets, a certain film is found. Therefore, the carburetor does not have enough fuel and the brushcutter either does not start or works intermittently. The cleaning methods are identical to the first reason: an ultrasonic bath, a compressor or a spray bottle with a special solution. In addition, if the mesh is clogged thoroughly, you need to take a soft brush for watercolors, soak it in gasoline and rinse it carefully without damaging it.

They have the ability to wear out during operation. From prolonged use, they deform, stretch, lose elasticity, poor-quality fuel corrodes them, and can no longer perform their functions well. This also applies to the needle itself. The fact is that it is covered with a thin layer of rubber, which wears out during operation and can no longer fit tightly into the hole. The brushcutter starts to work intermittently. To eliminate such a breakdown, it is necessary to replace all worn out parts. Where can I get them?

In specialized gardening equipment stores, a carburetor kit for a brush cutter of a certain model is sold. The cost of such a repair kit ranges from 40 to 60 hryvnia.

It includes two diaphragms, a gasket, a needle valve and a spring.

All wear parts of the carburetor can be replaced. Therefore, you should not rush and buy a new one, and you do not need to run to the workshop either, repairs are within the power of any brushcutter user. Professionals claim that the quality of the components in the repair kit even exceeds the characteristics of the native carburetor parts. Therefore, a well-repaired unit will perform better than a new one.

In addition, the bubble button for manual fuel pumping may fail. The impact of gasoline on it leads to the fact that during prolonged operation, the rubber corrodes and it begins to stick together or, under the influence of low temperatures, for example, during storage, it bursts. The button should also be replaced if necessary. In addition, its cost is small and will not affect the size of the repair budget in any way.

Based on the foregoing, it can be concluded that there are only three main carburetor malfunctions: clogging of channels, contamination of the fine filter and failure of components. In the first two cases, cleaning is enough, and in the third, a repair kit will help.

Assembling a brushcutter carburetor is a snap. All actions must be performed in reverse order:

Install a spring and a needle valve in the carburetor cover. Hold the spring with your finger and tighten the mounting bolt.

Screw the shutter of the air supply system to the product body with two screws.

Turn the carburetor over and go to the fuel system assembly. First you need to put the gasket.

Install the carburetor cover.

Install the main diaphragm.

Install the plate with the manual fuel pumping button and tighten the four screws.

The carburetor is assembled and ready for further use.

For the first time, repairing a brushcutter carburetor may seem like a complicated process, but if you have to disassemble it a second time, then this procedure will not cause much difficulty.

If you did not find any of the listed problems in your carburetor, it is recommended to contact a specialized service for help.

At first glance, a simple device for mowing grass with a two-stroke engine is fine-tuned. Repair of petrol cutters must be entrusted to a specialist or to study the technique yourself, using the operating instructions. The streamer maintenance is essential. Gearbox lubrication, line replacement, and teeth sharpening can be done on our own.

Any type of petrol cutter has a hollow rod, in which a connecting cable is placed between the engine shaft and the lower gearbox, which transfers rotation to the working body with the cutting tool.In the upper part there is a carburetor and a motor, at the bottom - a gearbox and a working tool, covered with a casing. In the middle part there is a transverse handle in which the control buttons are located. To unload the arms, there is an unloading belt that holds the bar with the operator's torso.

When choosing a petrol cutter, a two-stroke engine is preferable to a four-stroke one. The two-stroke engine is more maneuverable and easier to repair. With a four-stroke unit, the vibration level is lower.

They follow this, repairing petrol cutters is to troubleshoot;

• the engine does not start;
• the cutting mechanism is not picking up speed;
• the engine stalls;
• the reducer is heated;
• an extraneous knock is heard, strong vibration of the bar.

Before eliminating the malfunction, you need to diagnose, determine the non-working unit.

It is important to know the lubrication points of the tool. Constant care and cleaning of the device after work will extend its service life. Before work, it is necessary to tighten the fastening bolts, prepare fuel and fill the tank.

If the mechanism does not start, it stalls immediately, check sequentially:

• is there fuel in the tank;
• serviceability of the spark plug;
• cleanliness of the air and fuel filter;
• the cleanliness of the breather and exhaust port.

It is necessary to fill it with a freshly prepared mixture based on AI-92, the oil is injected for accurate dosage with a medical syringe. This will help avoid expensive chainsaw repairs.

It is necessary to make sure that the candle is working, it gives a spark when it comes into contact with the body. In this case, it is necessary to dry the candle channel, clean and dry the part itself. You can change the candle, but the canal still needs to be dried for 40 minutes. Check the serviceability of the high-voltage wire, there may not always be a contact. A malfunction in the ignition unit when repairing a petrol cutter cannot be eliminated with your own hands.

If, when the air filter is removed, the engine does not stall, the reason is in it - replacement or cleaning is required. Replacing the fuel filter is carried out with great care. Then check the cleanliness of the breather, remove the muffler mesh and clean the exhaust channel.

The next step will be to repair the carburetor, where you have to find the malfunction and fix it, taking into account the tiny size of the parts. If the simplest operations have not yielded results, in order not to disrupt the fine tuning of the system, it is better to entrust the repair to a specialist. Where to start diagnostics and how to properly repair petrol cutters with your own hands, check out the video: