Gasoline grass trimmer glows at high revolutions

Malfunctions of the petrol lawnmower: the most frequent problems and their solutions

Grass trimmer that has a gasoline drive is a useful thing for owners of homesteads, lawns, and when the grass trimmer suddenly stops, the work of clearing the area of grass stops. The device itself is a fairly complex mechanism, so there are many different causes of its failure. The most common problems are listed in the service manual. Know the reasons why the grass trimmer stalls, it is necessary to effectively perform the repair of the device yourself.

Troubles with the chain saw, related to the fact that this device does not start, are classified in a certain way by service specialists. They highlight malfunctions with the following nodes of the mechanism:

  • engine, in which the piston and bearings can wear out or fail, or the crankcase can crack;
  • The fuel supply system, with possible clogging of the filter or problems with the carburetor;
  • Mechanical damage to the wires, tubes, hoses;
  • ignition circuit.

To correctly identify the node where the failure occurred, it is necessary to pay attention to the circumstances under which the grass trimmer stalls.

Mower stops when you press the gas, how to fix the problem

There can be many reasons why your lawn mower stops, but here are some of the most common ones, and we hope that you can find yours and, of course, fix it. So, one of the situations is clogging the air damper, the hole behind which the fuel is atomized. If something has gotten into it, it can most often be quickly and easily removed. This is the easiest reason, like a clogged filter. It should be washed in solvent and then blown well with compressed air. If it can’t be repaired, order a new one from the KosiKos parts store.

When the grasshopper cuts out at high rpm, it is due to the following problems

  • The gas lawnmower stalls when you press the gas button, and the problem is solved by a clogged or stuck valve, located on the gas tank lid;
  • The carburetor is unadjusted by the vibrations that occur when the mechanism works;
  • problems with the circulation of the fuel mixture;
  • Atmospheric air leakage;
  • the hose intended for fuel intake is cracked or poorly connected.

The carburetor is adjusted, basing on the operating instructions to the trimmer. To adjust it is often enough to loosen the tightening of its housing. If there are problems with the circulation of the fuel mixture, it may slowly flow into the carburetor. The engine stops at high revs after it has run out.

When the throttle is depressed

If the lawnmower stops when you press the throttle, the reasons may be.

  • The most common variant is the failure of carburetor adjustment, which occurs at significant loads on the drive, after prolonged inactivity of the mechanism or when using it in harsh conditions.
  • clogging of the fuel valve, which can be eliminated by loosening it, resulting in the normal flow of gasoline through the system.
  • Loosening and hanging wire in carburetor. It can also cause the fuel hose to stretch or even burst if subjected to considerable strain.
  • Clogging of the breather valve (check valve), as a result of which fuel does not flow into the tank.
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If the problem is related to the carburetor unit, it can be recognized by the appearance of vibration of the lawnmower. When the hose bursts or the cable is stretched out, these components must be replaced.

When the throttle is depressed

If the lawnmower stops when you press the throttle, the causes may be as follows.

gasoline, grass, trimmer, high
  • The most common variant is a failure of carburetor adjustment, which occurs when there are significant loads on the drive, after long periods of inactivity of the mechanism or when using it in harsh conditions.
  • Fuel valve clogging that can be fixed by loosening it and gasoline can start to flow in the system normally.
  • Weakening and dangling of the cable in the carburetor. The fuel hose can also become stretched or even burst if subjected to considerable force.
  • The breather plug (check valve) is clogged and does not let fuel into the tank.

If the problem is related to the carburetor unit, you can recognize it by the appearance of vibration of the lawnmower. When the hose is cracked or the cable is stretched out. these components must be replaced.

Eliminate the causes of lawnmower mower downtime

The fuel mix must be precisely mixed with gasoline and oil. Do not use a different brand of fuel. To prevent dirt from getting in, let gasoline stand in a glass or metal bowl for 2 days. Do not use plastic containers for storing fuel. Precisely measure the oil using a syringe without a needle. To use only freshly prepared mixture, not leaving unused fuel in the tank. If the engine is naughty, the lawnmower stops when you press the gas, the fuel may be to blame.

If the step-by-step troubleshooting algorithm did not produce a result, and your grass trimmer still does not start or stops, it is worth inspecting the carburetor and the engine itself. Clogged carburetor can be one of the causes, unstable operation of the tool. There are three main problems here:

  • Clogged ducts or nozzles. Clean it all with special washes or blow out with a powerful jet of compressed air from a compressor. Do not use needles and wire, because the passages may be damaged;
  • Worn carburetor gasket. Grass trimmer stops when you step on the gas. The way out is to replace the failed gasket;
  • Leaky seals. You can use an ordinary household tonometer to check this indicator, replacing the pressure gauge on it with a suitable. Does not start the grass trimmer gasoline dry candle. Rating of gasoline grass trimmers for the garden. Watch the readings: if they do not change. everything is fine, and if the pressure starts to drop, it means that some part of the carburetor is defective. You will have to find it and replace with a new one.
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If everything is okay with the carburetor, the gasoline grass trimmer may not start because of the wear of the piston group. If you see chips, scratches, or scoring on the piston or cylinder, replace them. Piston rings definitely need to be checked. A small backlash of the piston when rocking the connecting rod indicates that it is time to change the rings. It is best to entrust this procedure to the specialists of the service center.

What to do if your lawnmower or saw cuts out at high revs (under load)

Garden equipment repair group Video on the causes of a sudden stop two-stroke.

lawnmower does not start when hot. pull the throttle trigger and yank the cord sharply several times until the engine starts, then put the trigger down. It will not start. repairs by a specialist dealer are necessary.

Check the ignition system, if the lawnmower does not start, is carried out sequentially:

  • Remove the spark plug from the soot and dirt, dry it, set the gap of 1 mm;
  • Connect to the ignition cable and check the spark, pulling the starter a few times;
  • if there is no spark, check for continuity of high-voltage wire;
  • replace the spark plug;
  • dry the spark plug passage;
  • at the same time check the operation of the ignition coil, it is faulty, if the working spark plug does not spark.

It is in the case of a faulty ignition coil, the lawnmower does not start when hot, it stops, works intermittently.

Cleaning or replacement of the air and fuel filter will provide the necessary flow of ingredients into the carburetor. The air filter can be washed in soapy water or replaced. If a nylon cloth is used, it is washed, the porous felt filler is replaced. Why the lawnmower stops when you press the gas: causes and solutions. Lawn mower (grass trimmer) stops: Replace the fuel filter carefully, without leaving the intake pipe open. Whether the air filter needs to be replaced can be determined by starting the engine with the air cleaner removed. Do you need to change the mesh on the fuel supply if the lawnmower won’t start, a dry spark plug will tell you.

Breather, air inlet in the gas tank. If it gets clogged, it creates a vacuum in the tank and the mixture does not flow to the carburetor. The hole can be blown with air or cleaned with a needle. Clean the exhaust port, remove the muffler mesh.

See also  How to refuel a trimmer for grass with gasoline. How to determine a violation of the proportion of mixing

When the throttle is depressed

If the lawnmower stops when you press the gas, the conditions may be as follows.

  • A more common variant is the failure of carburetor adjustment, which appears when there are significant loads on the drive, after long periods of inactivity of the mechanism or when using it in harsh conditions.

If the problem is with the carburetor assembly, you can recognize it by the appearance of vibrations of the lawnmower. When the hose is cracked or the cord is stretched, these parts must be replaced.

Where to look for the cause or where to start checking

All chainsaws have the same design and use the same principle. You can read about the chainsaw’s construction in this article. It does not matter what brand the tool is. STIHL, Husqvarna, ECHO, Champion, Partner, Sturm, etc. Trouble manifested in the form of when the chainsaw malfunctions when you press the gas, can occur equally expensive and high-quality tools, as well as low-priced Chinese devices. If there is a problem, you need to fix it.

A chainsaw is a system of mechanisms, made up of parts. Any part in the mechanism can fail, which will lead to partial or complete failure of the tool. If the tool’s engine starts, it does not mean that the chainsaw is fully operational. When the engine stops when you increase the speed, it means that there are the appropriate reasons. In the event of this malfunction you should first pay attention to a number of the following mechanisms of the tool:

  • Gas tank. make sure fuel is available. If you have enough fuel you should also check that the fuel filter is working properly, that the fuel hose and carburettor are connected, and that the breather plug is working properly

These are the main parts and mechanisms that should be checked first, if there is a malfunction, when the chainsaw stops when you press the gas pedal. There are other reasons why the chainsaw engine stalls when the gas pedal is pulled. What else can contribute to the occurrence of this malfunction, as well as features of troubleshooting, we will find out further.

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