Causes of power loss in your brushcutter. the lawnmower does not develop full power

grass trimmer, which has a gasoline drive. it is a useful thing for owners of household plots, lawns, and when the grass trimmer suddenly stalls, the work of clearing the territory from the grass stops. The device itself is a fairly complex mechanism, so there are many different reasons for its failure. The most common malfunctions are contained in the operating instructions. Know the reasons why the grass trimmer stalls, it is necessary to effectively perform the repair of the device yourself.

Malfunctions with the chain saw associated with the fact that this device does not start, are classified in a certain way by service specialists. They stand out malfunctions with the following nodes of the mechanism:

  • The engine, where the piston and bearings can wear out or fail, or the crankcase can be cracked;
  • the fuel supply system, with possible filter clogging or carburetor problems;
  • mechanical damage to the wires, tubes, hoses;
  • The ignition circuit.

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

Why the lawn trimmer stalls: causes and solutions

The reason why your tool sharply stops working, namely the engine does not pick up speed, breaks them, or in the popular manner “stops”, there may be more than one. Often it is not only the engine itself that is at fault, but also the adjacent systems, units of the unit, completely other parts related to the preparation of the fuel-air mixture, its quality, transportation to the engine tool. Let’s look at the most typical situations:

  • Does not pick up revolutions. Engine drive mechanics can be damaged or there are problems with the carburetor, but a clogged air filter is the main cause. To change the situation, you need to remove it, clean it, and if the latter is no longer available, it can be exchanged for a new one by quickly placing an order on our website. Also, the mower will not pick up speed, if the cable from the carburetor is constantly flying off. disassemble the machine and fix it firmly, or buy a new one, if the element is cracked, or other types of deformation.
  • At high rpm. The lid on the fuel tank is clogged. should it be cleaned or should buy a new one. often the cause is a misalignment of the carburettor. We give information about the correct adjustment of all screws in the informational articles. Check the quality of the fuel intake hose and replace it with a new one if necessary.
  • In case of heat. Occurs when fuel is boiling in the carburetor. Can also appear in the variants if the carburettor choke is of the sparse, rotary type (not disc type). Only option is to replace carburetor with a new one. There is also the option of a punctured wire or ignition coil. In this case change the element of the last.
  • Starts and stops (immediately after starting). An out of adjustment or improperly adjusted carburetor is the main cause of this situation. Distinct vibration will indicate an uneven fuel supply, and correcting the situation will help competent adjustment of the node.
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We hope you’ve found the right answer to the question: why the lawnmower stops, and all the suggested parts in the catalog today, as always, are at your service. Do you need a grass trimmer piston, a new carburetor, or related elements of these systems. you will find everything on the expanses of the store “Benzo Zip”.

Causes and solutions

To most accurately determine the cause of malfunction of any brand grass trimmer (e.g., Echo) and find out the possibility of fixing it, you need to establish, when performing what action the device stalls. The engine can shut down both at idle and at high rpm, when heated under load or immediately after starting, etc.ะด.

If it stalls after the gas is applied

Owners of gasoline mowers quite often mention that the lawnmower stalls when you press the gas. Usually such a breakdown occurs due to malfunctions in the carburetor. Failure in its operation can occur due to prolonged storage, use in harsh conditions, significant motor overload. Vibrating movements of the device during operation will be a symptom of such a breakdown.

Just a side note! Users familiar with automotive carburetor repair can try to repair this important grass trimmer component on their own, using the operating instructions. If this is not the case, the best solution is to turn to a service center for assistance.

Sometimes the grass trimmer stops when you give the gas, because the fuel valve is clogged. this prevents the gasoline supply. To correct the problem, it is sufficient to loosen the valves. This will restore normal fuel supply to the carburetor.

The lawn mower stops working at high engine speeds

During operation, there is a situation when, when you press the fuel mixture supply key, the unit RPM begins to decrease instead of increasing. A malfunction of this nature can be caused:

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Fuel hoses in the brushcutter with filter

  • By etching the atmospheric air into the combustion chamber;
  • If there is a problem with fuel mixture circulation;
  • clogging of the breather plug in the fuel tank lid (clean the hole with a fine needle);
  • improper carburetor adjustment.

In case of air leakage during the engine operation it is necessary to check the tightness of connection pipes and the integrity of gaskets in the cylinder head. The problem with fuel mixture circulation can be solved by fixing clogs in the fuel pipes leading to the carburetor. If there is a vacuum in the tank and the fuel mixture does not come to the carburetor, it is enough to clean the breather with a fine needle and blow with air.

Immediately after starting

The machine may stall immediately after starting if the carburetor is misadjusted or has not been properly adjusted. this causes Uneven fuel supply

The result is that the unit begins to vibrate distinctly. The carburetor is readjusted for troubleshooting, following the instructions for the mechanism.

Also the engine stops when there is clogged valve

, fuel injector. In such cases it is sufficient to simply clean it. If the lawnmower initially started, but then immediately stalled, it is possible that the fuel to the carburetor unit comes with some difficulty. The problem can be solved by loosening the valve, which allows the mixture to circulate freely in the system.

Stopping can also be caused by By sucking air

there is mechanical damage (holes, cracks) to the hose that takes fuel. If this happens, you need to increase the engine rpm to expel the air bubbles from the system more quickly.

at high RPM

When the grasshopper stalls at high rpm, it is due to the following problems:

  • a clogged or stuck valve on the fuel tank lid;
  • The carburettor has been adjusted by the vibrations produced by the machine;
  • problems with fuel mixture circulation;
  • atmospheric air leakage;
  • the hose intended for fuel intake is cracked or loose.

Adjust the carburettor in the instruction manual for your trimmer. It is often sufficient to loosen the tightening of its housing for adjustment. If there are problems with the circulation of the fuel mixture, the mixture may be flowing little by little into the carburetor. After it runs out, the engine will stall at high RPMs.

Right after it starts

The unit may malfunction immediately after starting if the carburetor is misaligned or misaligned, resulting in an uneven fuel supply. The result is that the unit begins to vibrate clearly. The carburetor is reconfigured according to the instructions for the mechanism to troubleshoot.

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In addition, the engine stops when the fuel valve is clogged. In such cases it is sufficient to clean it. If the lawnmower initially worked, and then immediately died out, it is possible that the fuel is having difficulty getting into the carburetor device. Solving the problem helps to loosen the valve, which allows the mixture to circulate freely in the system.

Stopping can also be caused by the air pump if there is mechanical damage to the hose (holes, cracks) forming the fuel. In this case, you need to add turns to the disc to quickly force air bubbles out of the system.

Why does the STIHL electric brushcutters not draw their full power?

When using an electric grass trimmer can also malfunction with the revolutions. The causes are completely different to those for fuel-efficient power tools.

You can repair the problem yourself

your electric weed trimmer isn’t working at full power because

  • The voltage in the network below the required minimum for the device more than 10%;
  • There was a failure in the soft start (if there is such a system);
  • there is a malfunction of the brush unit;
  • the motor winding has been burned out;
  • rotating parts sometimes get jammed.

To adjust the voltage, you should first check its power. If it does not meet the standards, you should increase it with a stabilizer.

Have the soft starter system repaired by a STIHL repair shop.

If the brushes are worn out simply replace them. When installing new ones, it is advisable to clean all surfaces with which they come into contact.

To get the voltage right it’s a good idea to check the power first.

If motor windings are burning up, electric motor must be replaced.

Jamming of rotating parts can have various causes. To eliminate them, the entire drive unit must be reexamined.

The latter problem can also occur with another machine from this company, the STIHL pruning shears, and sharpening the disc on the shears is the solution.

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