the lawn mower is working at high speed

If stalled at high speeds

If the carburetor stalls at high speeds, this means that at idle and low speeds, the incoming fuel is enough for it, but not enough to work at high speeds. Then it is necessary to check the serviceability of the following trimmer assemblies.

  • Fuel hose. may have been damaged by cracking. In this case, you need to replace the part. Or maybe you just need to tighten the clamps.
  • The filter mesh between the carburetor and the gasoline supply hose. it could be clogged. In this situation, it is necessary to clean the part.
  • The valve located on the gas tank cap. it could get stuck or clogged with debris. Cleaning is also needed.
  • Carburetor. it may be misaligned as a result of constant vibration. This is usually the case for cheap Chinese parts. To fix the problem, you need to configure according to the instructions. In some cases, it is enough just to loosen the tightening of the carburetor body. If the adjustment fails, you need to install a new element.
  • Additionally, you should check the air filter. It may need to be rinsed and cleaned or replaced with a new one, as it could become clogged with dirt and grass particles when the equipment is tilted, when the user mowed in hard-to-reach places.

Causes of malfunction and their elimination

In order to most accurately determine the cause of the malfunction of any brand of trimmer (for example, Echo) and find out the possibility of its elimination, you need to establish at what action the device stalls. The engine can be turned off both at idle and at high speeds, heating up under load or immediately after starting, etc.

the lawn mower stalls when you press the gas cause

Those who have lawns on their backyard know that a trimmer is a pretty useful thing that will help you quickly and efficiently tidy the lawn or clear weeds from heavily overgrown areas. And, like any mechanism, it also often fails due to various breakdowns. One of the most common complaints from device owners is that the trimmer stalls when you press the gas. We propose to understand the main reasons for this phenomenon and identify ways to solve the problem.

Why does the trimmer stall when you press the gas?

As you can see, there are many reasons why the trimmer can stall when you press the gas. That is why it is important to monitor the state of your assistant, check the state of all systems of the mechanism in time.

Before figuring out why any of the tools of a summer resident-gardener or a professional working with a lawn mower (lawn mower) stalls, it is worth distinguishing between two main situations when this happens. The first is when the instrument does not start after you have just made the purchase, and the second is when the instrument is in use. So, let’s look at both.

  • After launch. The lawn mower stalls if the carburetor is set incorrectly or if it has been adjusted. Fuel is supplied unevenly, respectively, there are distinct vibrations.
  • When heated. The situation when the mechanism starts and works, but gradually “chokes” and stalls on the move. when gasoline boils in the carburetor, or the damper in the carburetor is not disc, but rotary. In such cases, it is better to replace the carburetor itself. There is a variant of air leakage. when the coil or wire in the ignition is broken.
  • At high revs. This also occurs from the adjustment of the carburetor or clogging of the cap on the gas tank. It is worth trying working with a slightly open valve. Be sure to check the fuel intake hose. it may be cracked or poorly attached to the base.
  • Not gaining momentum. As the main reason why the engine does not pick up speed, the air filter is clogged. It is possible for the cable to fall off in the carburetor, breakdown of the carburetor and the occurrence of problems with the mechanics of the motor drive.

There are times when a part of the mechanism requires mandatory replacement, so we are always happy to offer spare parts for lawn mowers. It is important to understand that sometimes saving on minor elements can lead to breakdown of such global components as the carburetor or engine. Therefore, competent operation and timely replacement of the necessary particles will provide you with a full-fledged work with pleasure.

If stalled after launch

If the equipment starts and stalls immediately after starting, this indicates an incorrect setting or misalignment of the device. As a result, fuel does not flow to the engine evenly, resulting in significant vibration and trim disengagement. To fix the breakdown, it is necessary to reconfigure the device according to the user’s manual.

Another probable problem is a clogged gasoline supply valve. It needs to be cleaned.

High-speed camera mounted on a spinning lawnmower blade

On a note! If the trimmer starts but stalls immediately, it may also mean that fuel is not moving to the carburetor with difficulty. The weakening of the valve will help to eliminate the problem. this will ensure uniform and free circulation of fuel in the device.

Another possible cause is a damaged fuel intake hose. Air can enter the system through cracks and holes. To solve the problem, you need to increase the engine speed in order to get rid of air bubbles that have penetrated into the device.

If stalled under load

Sometimes the trimmer stalls under load because it cannot gain momentum. This means that the cable, which is taut in the carburetor, is loose and slack. If you have experience in repairing this unit, the cable should be tightened.

Another cause of the malfunction is that the fuel intake hose is too tight. Under load, it stretches even more, as a result of which cracks are formed, as a result, the part deteriorates. To eliminate the breakdown, you will need to replace this element.

If it stalled when opening the damper

If the equipment works properly at idle, but stalls when the air damper is opened, this indicates the penetration of air into the system through cracks in the fuel supply hose or damaged oil seals. In order to fix the breakage and adjust the operation of the tool without sucking air from the atmosphere, it is necessary to replace the damaged parts.

Another possible cause of a breakdown is a malfunction of the carburetor dosage system. To fix this problem, it is better to contact the professionals.

Carburetor

In order to check the injector, it is necessary to remove the carburetor and disassemble it. To remove, it is necessary to unscrew the two nuts securing the air filter and the carburetor, then remove the air filter and the engine control lever, while disconnecting the choke control rod from the carburetor. Next, you need to pull the carburetor slightly towards you, and disconnect the fuel supply hose.

It is necessary to remove the fuel hose as carefully as possible, and prepare a plug for it in advance, since fuel should come from it.

Having removed the carburetor, it must be blown out and cleaned of dirt, only after that the carburetor can be unscrewed.

It is necessary to unscrew the cover of the main chamber of the carburetor, this is the one on which the compensator is installed on top. Further, using a bolt of 8 mm and a length of at least 50 mm. Knock out the valve.

It is necessary to knock out the valve by installing the carburetor on a wooden stand, this will ensure its protection from damage to the body.

After the nozzle is removed, you can blow it out with a compressor. The valve should only let air through in one direction, if you can freely blow the valve in both directions, then it is defective and must be replaced with a new one. Collect the chainsaw after the valve is repaired, it is necessary to follow the reverse sequence of disassembly.

You can clearly see how the carburetor is being repaired, or rather, how to properly knock out the nozzle valve from the carburetor body by watching the video.

Another common reason a saw can stall when revving up is air leaks into the carburetor. It is possible to check this only with a special tool, but it is worth noting that if preventive work on the carburetor has not been carried out for a long time, then a new set of gaskets can be installed in the carburetor. In some cases, this helps to solve the problem with its depressurization.

When disassembling the carburetor to replace the gaskets, you need to carefully inspect its needle valve, press the rocker arm and check its lifting. Sometimes, especially after the Stihl chainsaw has stood for a long time with fuel in the carburetor, the needle may burn to the carburetor body and not perform its functions. Simply put, the needle valve will not allow the fuel mixture to pass through. In this case, the saw will not work.

Why does the trimmer stall when you press the gas?

As you can see, there are many reasons why the trimmer can stall when you press the gas. That is why it is important to monitor the condition of your assistant, check the status of all systems of the mechanism in time.

Any tool can break and the Stihl MS 180 chainsaw is no exception. Today we will try to understand such issues as: why the chainsaw stalls when the speed increases, also at idle and at full speed. Consider the options for diagnosing and eliminating malfunctions associated with this behavior of the Stihl 180 chainsaw.

READ  How to Adjust a Lawn Mower Valve

IMPORTANT. An experienced electrician leaked the secret of how to pay for electricity in half, the legal way.

Why stalls at idle

The first and most common cause of this malfunction is improper carburetor adjustment. You can adjust the idle speed yourself, for this you need to have a Stihl adjusting screwdriver, which is supplied with the unit. The adjustment hole is located on the right side of the Stihl 180 saw on the handle and is marked with “-” and “”.

If the Stihl chainsaw does not keep the speed and stalls at idle speed, you can be almost 90% sure that it has irregularities in the fuel pump operation system, as a rule, it is air leaks into the crankcase through the oil pan gasket, or, much more often, through the oil seals crankshaft. Air leaks reduce or completely stop the impulse that is supplied through special channels to the fuel pump of the chainsaw. As a result, the Stihl 180 chainsaw does not receive the required amount of fuel and stalls at idle speed.

Diagnostics can be carried out using a special device called a vacuum gauge.

The second way to check the performance of the oil seals is to pour gasoline into the engine crankcase and look at them, if the oil seals pass gasoline, it means they cannot provide normal pressure in the crankcase, which will make idle work impossible. And when operating at high speeds, with leaking oil seals, there is a possibility of seizure of the crankshaft bearings.

The algorithm for checking the crankcase and Stihl 180 oil seals for leaks is as follows:

  • The top cover is removed.
  • Dismantle the air filter housing and carburetor.
  • The handle of the chainsaw is removed.
  • The starter spins and retracts.
  • On the side opposite to the starter, the side cover and the drive sprocket are removed.
  • A piston stopper is installed in the spark plug hole or a string from an old starter with knots imposed on it is stuffed into the cylinder.
  • The flywheel and clutch are unscrewed, after which the parts are removed. It is worth knowing that the chainsaw clutch has a left-hand thread and unscrews clockwise.
  • The gear wheel of the drive of the oil pump is removed.

You can see the oil seals, after that it is necessary to fill the crankcase with gasoline and check the leakage. It is possible to fill the crankcase through the fuel window in the cylinder; for this, the piston must be raised as high as possible. If leaks are found, it is necessary to replace the defective oil seals, or re-seal the pallet. You can collect Stihl 180 following the reverse sequence of the algorithm.

Air filter

Causes and repairs

Sometime in early June, I began to notice that my trimmer model GT22GES (manufactured by “ECHO”) began to lose its former power.

In the process of work, when mowing grass, even with a slight increase in the load (the grass is higher and thicker), the speed dropped and the efficiency of work was no longer what it was before.

Previously, the trimmer did not notice such obstacles at all. With a sharp push on the “trigger” without load, the revolutions increased slowly, as if reluctantly.

I took the User’s Manual for the trimmer, found the section “Faults and their elimination” in it. I chose a suitable malfunction in the table, which is described something like this: “The engine accelerates poorly or dies out”.

Potential causes include clogged air filter, fuel filter, clogged fuel tank drain, spark plug, carburetor, clogged cooling system, clogged exhaust port or muffler.

As it turned out, the list of possible reasons is extensive. where to start?

First, I visually looked at the air filter, drain hole, air radiator, all this turned out to be in good condition.

Then I decided to look from the end of the list, that is, check the exhaust system. the exhaust channel and the muffler.

To do this, I removed the spark plug tip, unscrewed 3 screws and removed the plastic protective cover of the muffler (in the drawing in the Manual under No. 15). Then, unscrewing two long screws, carefully removed the muffler, so as not to damage the two gaskets that are present there.

The premonition did not deceive me. The exhaust channel of the engine cylinder (through which the exhaust gases come out of the cylinder) was 30. 40 percent clogged with carbon deposits.

craftsman racing mower top speed run 40mph!!

So this is what turned out to be the reason for the frustration of my trimmer!

This is what the exhaust channel looks like

Carefully, so as not to damage the surface of the piston and to prevent foreign products (in other words, the very carbon) from getting into the cylinder, I completely cleaned the exhaust channel from carbon deposits, carefully blew the channel with a pump.

I used a knife as a tool (but only at the edge of the canal), and in the depth of the canal, a wooden and plastic spatula of suitable sizes.

The muffler turned out to be pretty clean both inside and out.

After assembly, I started the trimmer, warmed it up a little and tried to mow. the engine started up like new, the power increased noticeably, it doesn’t cut the grass, but cuts it (3 mm line).

It’s nice that the device began to work perfectly and doubly pleased that he himself was able to find the malfunction and fix it.

It is likely that such a problem can arise in other models of trimmers, because they all have approximately the same design and all trimmers have an exhaust channel and a muffler.

Those who have lawns on their personal plot know that a trimmer is a rather useful thing that will help you quickly and efficiently tidy up or clear weeds from heavily overgrown areas. And, like any mechanism, it also often fails due to various breakdowns. One of the most common complaints from device owners is that the trimmer stalls when you press the gas. We propose to understand the main reasons for this phenomenon and identify ways to solve the problem.

Output

If the Stihl MC 180 chainsaw stalls at idle, does not gain power when you press the gas, or even stalls at full speed, it is necessary to diagnose the fuel system and check the crankcase for leaks. You can do it yourself, but you need to have certain skills. If you are not familiar with two-stroke saws, it is better to turn to specialists, since this technique is rather capricious and any mistakes are expensive.

Before figuring out why any of the tools of a summer resident-gardener or a professional working with a lawn mower (lawn mower) stalls, it is worth distinguishing between two main situations when this happens. The first is when the instrument does not start after you have just made the purchase, and the second is when the instrument is in use. So, let’s look at both.

  • After launch. The lawn mower stalls if the carburetor is set incorrectly or if it has been adjusted. Fuel is supplied unevenly, respectively, there are distinct vibrations.
  • When heated. The situation when the mechanism starts and works, but gradually “chokes” and stalls on the move. when gasoline boils in the carburetor, or the damper in the carburetor is not disc, but rotary. In such cases, it is better to replace the carburetor itself. There is a variant of air leakage. when the coil or wire in the ignition is broken.
  • At high revs. This also occurs from the adjustment of the carburetor or clogging of the cap on the gas tank. It is worth trying working with a slightly open valve. Be sure to check the fuel intake hose. it may be cracked or poorly attached to the base.
  • Not gaining momentum. As the main reason why the engine does not pick up speed, the air filter is clogged. It is possible for the cable to fall off in the carburetor, breakdown of the carburetor and the occurrence of problems with the mechanics of the motor drive.

There are times when a part of the mechanism requires mandatory replacement, so we are always happy to offer. It is important to understand that sometimes saving on minor elements can lead to breakdown of such global components as the carburetor or engine. Therefore, competent operation and timely replacement of the necessary particles will provide you with a full-fledged work with pleasure.

2.1 How to sharpen a lawn mower knife or disc?

To sharpen a cutter blade or blade, know that a good blade or blade must be sharpened so that the edges are sharp without overheating the metal. A sharpened cutting element will make it easier to remove the grass surface. Also, the sharpness of the disc or knife affects the number of plants that will be eliminated in one grab.

In general, maintenance of a gasoline spit provides for constant cleaning of equipment after work, checking the quality of oils and gasoline, as well as a properly tuned carburetor. Do not put questionable additives and the like into the lawnmower. Regularly lubricate the gearbox and lubricate the driving elements to prevent malfunctions. The lubricant is recommended to be renewed at least every 1000 hours of operation.

gas trimmer high speed. The lawn mower will not start or will start but stalls. What is the reason

The lawn mower is the most essential tool for those who prefer to keep their land in order and beauty. This type of equipment copes well with almost all types of grass and weeds. After using this device, a piece of land overgrown with weeds will look as it should.

However, any tool is susceptible to damage. Sooner or later, the lawn mower also gives out all sorts of malfunctions. How to solve emerging problems with gasoline streamers will be discussed in this material.

Causes of malfunction and their elimination

In order to most accurately determine the cause of the malfunction of any brand of trimmer (for example, Echo) and find out the possibility of its elimination, you need to establish at what action the device stalls. The engine can be turned off both at idle and at high speeds, heating up under load or immediately after starting, etc.

If stalled at high speeds

If the carburetor stalls at high speeds, this means that at idle and low speeds, the incoming fuel is enough for it, but not enough to work at high speeds. Then it is necessary to check the serviceability of the following trimmer assemblies.

  • Fuel hose. may have been damaged by cracking. In this case, you need to replace the part. Or maybe you just need to tighten the clamps.
  • The filter mesh between the carburetor and the gasoline supply hose. it could be clogged. In this situation, it is necessary to clean the part.
  • The valve located on the gas tank cap. it could get stuck or clogged with debris. Cleaning is also needed.
  • Carburetor. it may be misaligned as a result of constant vibration. This is usually the case for cheap Chinese parts. To fix the problem, you need to configure according to the instructions. In some cases, it is enough just to loosen the tightening of the carburetor body. If the adjustment fails, you need to install a new element.
  • Additionally, you should check the air filter. It may need to be rinsed and cleaned or replaced with a new one, as it could become clogged with dirt and grass particles when the equipment is tilted, when the user mowed in hard-to-reach places.
READ  Lawn Mower Stalls

If stalled under load

Sometimes the trimmer stalls under load because it cannot gain momentum. This means that the cable, which is taut in the carburetor, is loose and slack. If you have experience in repairing this unit, the cable should be tightened.

Another cause of the malfunction is that the fuel intake hose is too tight. Under load, it stretches even more, as a result of which cracks are formed, as a result, the part deteriorates. To eliminate the breakdown, you will need to replace this element.

If stalled without gaining momentum

If the trimmer does not pick up speed and turns off, there may be several reasons. The most common culprit is a clogged air filter. It must be pulled out and cleaned, if necessary replaced.

On a note! The trimmer could stall without gaining speed due to a carburetor malfunction. The unit for repair or replacement must be taken to the service center.

Another possible malfunction is related to the mechanics of the motor drive. This part of the trimmer must be thoroughly cleaned and the inner cables must be lubricated.

You also need to make sure that the cable in the carburetor has not slept. Before using the trimmer for the first time, check this structural element to ensure that it is firmly and not tightly tensioned. Otherwise, the cable may crack, resulting in costly repairs.

Trimmer stalls. how to fix the problem

The petrol trimmer is a useful tool for clearing unwanted grass from house areas and large lawns. The design of this technique is quite complex, therefore, if the device breaks down, there may be several reasons. The most likely factors causing the breakdown are usually described in the user manual. Knowing why the trimmer stalls, you can try to fix the defect yourself. The most common malfunctions that provoke a stop of lawn mowers, and the possibility of repairing them with your own hands. in the material below.

If stalled when heated

the lawn mower often stalls when heated. It looks like this. the tool starts up, works “jerky” (not smoothly) and quickly stalls. This situation occurs due to fuel boiling in the carburetor or an incorrectly selected valve, which should not be disk, but rotary. In the latter case, if an error is found, the part must be replaced.

Damaged ignition circuit wiring or a defective coil can cause the trimmer to heat up. A broken knot will need to be replaced with a new one.

If stalled after launch

If the equipment starts and stalls immediately after starting, this indicates an incorrect setting or misalignment of the device. As a result, fuel does not flow to the engine evenly, resulting in significant vibration and trim disengagement. To fix the breakdown, it is necessary to reconfigure the device according to the user’s manual.

Another probable problem is a clogged gasoline supply valve. It needs to be cleaned.

On a note! If the trimmer starts but stalls immediately, it may also mean that fuel is not moving to the carburetor with difficulty. The weakening of the valve will help to eliminate the problem. this will ensure uniform and free circulation of fuel in the device.

Another possible cause is a damaged fuel intake hose. Air can enter the system through cracks and holes. To solve the problem, you need to increase the engine speed in order to get rid of air bubbles that have penetrated into the device.

lawn mower stalls

When purchasing a lawn mower, you need to be prepared for the fact that, as in all other similar tools, breakdowns may also occur in it, which will require repair.

However, you should not immediately run to the service center and pay a lot of money to the masters who convince you of a serious malfunction in the device.

the lawn mower stalls at high speed on gas

Perhaps the most common complaint about petrol trimmers is: “The lawn mower is stalling.”.

Of course, a rather serious malfunction can also be the reason for this. However, most often the situation is much simpler than it seems at first glance.

To cope with such a problem, first of all, try to figure out its causes on your own, because after finding out the cause, it is much easier to deal with the problem, and sometimes it even self-destructs.

In fact, the reasons are when the lawn mower stalls at high speeds, there are quite a few reasons.

Another one is the presence of faults in the power system.

In this case, the lawn mower will stall at idle speed. A misalignment or improper adjustment of the carburetor can lead to problems with the power system.

Vibrations that occur during the operation of the lawn mowers can lead to misalignment.

Incorrect adjustment of lawn mowers can be corrected simply by adjusting it in accordance with the requirements specified in the instruction manual.

In addition, sometimes gasoline trimmers can stall due to the fact that the valve located in the gas tank cap is simply clogged or stuck.

To find out, try using a scythe by loosening the gas cap.

If the device works properly in this mode, clean the valve.

over, the lawn mower can stall due to poor fuel flow to the carburetor.

Why, then, does the device start, you ask?

The reason for this is that at first the fuel gradually runs into the carburetor and it is enough to work at increased power.

However, then it is produced and at high speeds the engine starts to stall.

As for the carburetor, the problem here may also be that its body is too tight.

Air leaks can also be the reason why the lawn mower stalls at high RPM on gas.

This refers to the possible presence of a place through which air can pass during the heating of the engine.

Be sure to check the fuel inlet hose, among other things. The problem may be that it does not hold well or is cracked altogether.

These are the main reasons why a lawn mower can stall.

When you hit the gas

If the lawn mower stops when the throttle is pressed, the reasons may be as follows:.

  • The most common option is carburetor adjustment failure, which occurs when the drive is under heavy load, after prolonged inactivity of the mechanism, or when it is used in difficult conditions.
  • Clogging of the fuel valve, which is eliminated by loosening it, as a result of which gasoline begins to flow normally through the system.
  • Loosening and drooping of the cable in the carburetor. The fuel hose may also be stretched to the point of rupture due to significant stress.
  • Clogged breather (check valve), as a result of which fuel does not enter the tank.

If the problem is with the carburetor assembly, the lawn mower vibrates to recognize it. When the hose bursts or the cable is stretched, these components are replaced.

At high revs

When the scythe stalls at high speeds, this is due to the following problems:

  • clogging or sticking of the valve located on the gas tank cap;
  • the carburetor is out of alignment under the influence of vibrations arising from the operation of the mechanism;
  • problems with the circulation of the fuel mixture;
  • suction of atmospheric air;
  • the fuel intake hose is cracked or loose.

Adjust the carburetor referring to the trimmer operating instructions. For adjustment, it is often enough to loosen the tightening of its housing. If there are problematic points with the circulation of the fuel mixture, then it can gradually enter the carburetor. After its development, the engine stalls at high speeds.

What could have broken

Problems with the lawn mower due to the fact that this device does not start are classified in a certain way by service specialists. They highlight faults with the following components of the mechanism:

  • an engine in which the piston and bearings may wear out or fail, crack the crankcase;
  • the fuel supply system, while the filter may be clogged or problems with the carburetor;
  • mechanical damage to wires, tubes, hoses;
  • ignition circuit.

To correctly determine the node where the breakdown occurred, you need to pay attention to the circumstances under which the trimmer stalls.

Idle

At idle, common reasons for stopping the trimmer are as follows:

  • contamination, misalignment or incorrectly adjusted carburetor adjustment;
  • clogged air filter;

Replacing the air filter for lawn mowers

Trimmer air filter

  • reducing the speed of the gearbox when it heats up, which is a consequence of the use of an unsuitable fuel mixture;
  • clogged throttle;
  • air ingress into the system;
  • not enough fuel to operate the lawn mowers.

If the problem area is the carburetor, then the equipment will stop at both “cold” and “hot” start.

Why does the petrol trimmer stall

A scythe with a gasoline drive is a useful thing for owners of home gardens, lawns, and when the trimmer suddenly stalls, the work to clear the area from grass stops. The device itself is a rather complex mechanism, so there are many different reasons for its breakdown. The most common malfunctions are contained in the operating instructions. You should know the reasons why the trimmer stalls in order to effectively repair the device yourself.

When heated

the lawn mower often stops when it heats up. At the same time, it starts up, works “jerky” and gradually stops. This process occurs when the gasoline in the carburetor boils or the damper is installed in a rotary rather than disc type. In the latter case, the part is changed.

It happens that the trimmer heats up if the ignition circuit wire or coil is damaged. In order for the device to start working normally, replace parts.

Immediately after wound up

The unit may stall immediately after starting if the carburetor is misaligned or incorrectly adjusted. this causes an uneven fuel supply. The result is that the device vibrates distinctly. For troubleshooting, the carburetor is reconfigured, following the instructions for the mechanism.

Also, the engine stops when the fuel supply valve becomes clogged. In such cases, it is sufficient to simply clean it. If the mower started working at first, but then immediately stalled, then it is possible that the fuel enters the carburetor unit with some difficulty. The weakening of the valve helps to solve the issue, which ensures free circulation of the mixture in the system.

The stoppage can also be caused by air leaks in the presence of mechanical damage to the hose (holes, cracks) that takes the fuel. In this case, add more revolutions to the drive in order to quickly expel air bubbles from the system.

What to do if the trimmer stalls when you press the gas?

So why does the trimmer stall when you press the gas? There can be several reasons for this problem.

  • The carburetor is out of alignment after an unsuccessful wintering or after too much use of the lawn mower. The petrol trimmer runs on an air / fuel mixture prepared by the carburetor. If incorrectly adjusted, this mechanism prepares a lean mixture, which is not able to provide the engine with a sufficiently high speed. You can understand the problem with the carburetor by the characteristic vibrations of the lawn mowers.
  • You will know about a clogged fuel filter by the fact that the trimmer starts and stalls. In other words, there is enough fuel flow to start the mower, but not enough to keep the engine running. It may be possible to solve the problem by loosening the valves on the filter. If not, you should wash the filter in solvents and blow it out with compressed air. If after that the problem is not solved, then you should purchase a new fuel filter.
  • If the engine stalls at speeds close to maximum, then there may be a problem with the breather, which regulates air access to the gas tank. When fuel is consumed too quickly, which is typical when you give gas, a rarefied pressure is formed in the gas tank, due to which the flow of fuel into the engine is reduced.
  • The engine stalls when the choke is opened. The problem, again, is associated with the carburetor, which, due to excess air, prepares a lean air-fuel mixture, which is not capable of ensuring engine operation.
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Why the lawn mower stalls?

In this article we will look at the problem, why the lawn mower stalls and how to deal with this problem.

Even very good lawn mowers can have trouble starting. For example, it starts up and stalls. Most likely, this indicates problems with the filters. air or fuel. If it stalls at idle, then, most likely, the lawn mowers have problems with the carburetor, which overheats too quickly and can no longer cope with the formation of a high-quality air-fuel mixture.

If the trimmer stalls when you press the gas, i.e. when the engine starts to run at high rpm, then this indicates a problem with the carburetor or with the fuel filter.

Problems with lawn mowers with an air filter will be indicated by the fact that it stops working when the air damper is opened.

What to do if your lawn mower starts and stalls?

Now let’s look at all the above problems in more detail.

    The lawn mower stalls when you press the gas.

In principle, there can be a huge number of reasons why the engine of a lawn mower stops working when you press the gas. We will consider here only the most common.

Perhaps the air damper is just clogged. And to eliminate the problem that has arisen, it will be enough just to clean the air damper. Also, the engine stalls due to a clogged air filter. To clean it, the filter should first be washed in a solvent, and then blown out with a stream of compressed air.

A similar procedure should be carried out with a clogged fuel filter, which prevents the flow of fuel in the proper volume when the engine speed is increased.

The engine can also stall for other reasons. Firstly, the spacer located between the cylinder and the carburetor worn out, and secondly, the crankshaft oil seals began to suck in air.

lawn mower stalls when heated.

We have already pointed out that in this case the problem is in the carburetor. Due to the increased temperatures, gasoline begins to boil in it, due to which the air-fuel mixture ceases to form or its quality is critically reduced.

In addition, this problem can arise due to the fact that the carburetor is equipped with a rotary valve, not a disc valve. If the problem has become chronic, then it should be solved radically. by buying a new carburetor with a disc damper.

the lawn mower starts and stalls.

Most likely, access to the fuel tank is difficult or completely absent, due to which a low pressure zone forms in it, due to which the engine stops receiving fuel in the required amount and because of this it stops working.

lawn mower stalls at idle speed.

The engine at idle speed can stall for the following reasons:

    Gearbox is too hot

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he got up and began to prepare a not quite normal gasoline solution, which is why the revolutions on the drum began to drop;

  • Clogged carburetor;
  • The carburetor is incorrectly adjusted;
  • The throttle valve is dirty;
  • The throttle is open, which causes too much air to enter the carburetor, which makes the air-fuel mixture lean;
  • Clogged air filter.
  • Lawn Mower Runs Too Fast. Help And Repair

    lawn mower stalls on hot? There is a solution!

    the lawn mower stalls when hot. this means that there is already a certain amount of fuel in the engine to start the engine, but after 5-10 minutes of operation, it stops working. This behavior of the engine indicates problems with the fuel filter.

    There are two solutions. preventive and radical. Preventive is to try to clean it, which will consist in cleaning the contamination with a solvent, and then blowing the filter with a jet of compressed air.

    But in case of severe pollution, you can fix the breakdown only by applying a radical solution. this is the purchase of a new fuel filter.

    Trimmer stalls at idle. reasons and solutions

    Common situations where a trimmer or lawn mower stalls include idling. Let’s go straight to the reasons:

    • heating of the gearbox and a drop in revolutions on the drum as a result of the gasoline solution not being prepared quite correctly. The required proportion is 1: 4;
    • contamination of the carburetor;
    • the throttle valve is clogged;
    • when the damper is opened (if such an experiment was carried out), the air flow makes the mixture “lean”;
    • adjusting the carburetor;
    • clogged air filter;

    Insufficient amount of fuel, which is needed for the operation of the gasoline-powered tool, will entail a situation when at high speeds, with an increase, the trimmer works, and at idle it stalls. In a situation with a carburetor, the device will stall on cold start and “hot”. For any lawn mower user. a professional and an amateur, it is important to understand that any malfunction of the tool may depend on fine detachment of the part, detachment of the fastener or clogging, as well as on the global breakdown of an important part of the mechanism.

    Despite all sorts of malfunctions, your device still needs such an indispensable component as lawn mower knives, without which the operation of the scythe is simply impossible.!

    lawn mower won’t start for hot reasons

    lawn mower won’t start for hot reasons

    Why the lawn mower stalls

    • After launch. The lawn mower stalls if the carburetor is set incorrectly or if it has been adjusted. Fuel is supplied unevenly, respectively, there are distinct vibrations.
    • When heated. The situation when the mechanism starts and works, but gradually “chokes” and stalls on the move. when gasoline boils in the carburetor, or the damper in the carburetor is not disc, but rotary. In such cases, it is better to replace the carburetor itself. There is a variant of air leakage. when the coil or wire in the ignition is broken.
    • At high revs. This also occurs from the adjustment of the carburetor or clogging of the cap on the gas tank. It is worth trying working with a slightly open valve. Be sure to check the fuel intake hose. it may be cracked or poorly attached to the base.
    • Not gaining momentum. As the main reason why the engine does not pick up speed, the air filter is clogged. It is possible for the cable to fall off in the carburetor, breakdown of the carburetor and the occurrence of problems with the mechanics of the motor drive.

    There are times when a part of the mechanism requires mandatory replacement, so we are always happy to offer spare parts for lawn mowers. It is important to understand that sometimes saving on minor elements can lead to breakdown of such global components as the carburetor or engine. Therefore, competent operation and timely replacement of the necessary particles will provide you with a full-fledged work with pleasure.

    The lawn mower stalls when you press the gas, how to fix a breakdown

    Likewise, when the throttle is pressed, the tool stalls because the actuator is clogged. Another option is also possible: the fuel is not supplied in full, so you need to check or replace the fuel filter. Other possible reasons for stalled lawn mowers when giving gas include:

    • Crankshaft oil seals suck in air;
    • A spacer that is located between the carburetor and the cylinder in a “problem” situation;

    To all of these reasons why the mechanism stalls when gas is added, we add some helpful tips on how to handle your lawn mower. First of all, before starting work with any technique, you need to read the instructions. In this case, the consistency of gasoline and oil plays an important role, it is competently prepared by you, and also not to overheat the unit, and not to leave gasoline for the winter when you simply will not use the car.

    The well-coordinated work of all its components plays an important role in the full-fledged work of any tool. And if in one it is a line for lawn mowers, then in the other there is a piston or a carburetor. Lawnmower owners who want to use their tool at full capacity need to understand that under a load for which the capabilities of the machine are not designed, the entire mechanism or its individual parts can simply break. Therefore, only competent and moderate operation presupposes long-term efficient operation of any gasoline-powered tool.

    When the air damper is opened

    It happens that the unit stalls when the air damper is opened, normally idling. This is due to air leaks in the system, caused by cracks in the fuel hose or problems with the oil seals. The carburetor metering system may also malfunction, and the lawn mower will stop after opening the damper.

    Fuel hose in carburetor

    All the possible reasons that the lawn mower stalls, and how to fix them, are contained in the following video.

    There are many reasons for stopping lawn mowers, but the most common malfunctions associated with its carburetor. They can arise in any case. The most problematic option is when a serious breakdown occurs, and you need to purchase new parts or change the lawn mower.

    In order for the trimmer to work normally for a long time, you must strictly follow the instructions for use. It is necessary to fill the unit with a suitable fuel mixture, the unit should operate at moderate load.