The trimmer does not develop speed: the main problems and ways to solve them

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One of the common problems is that the trimmer does not develop or does not gain momentum. What is this due to: bad parts, improper operation, low-quality gasoline? Or maybe the wife got tired of the constant noise, and she decided to “tweak” the garden tool so that it would stop buzzing all day? In our article we will analyze in detail the solution to the problem “why the lawn mower is not gaining momentum.” Go!

Engine speed of a brush cutter - how the tool works in practice

Any trimmer uses fuel for its work - gasoline or electrics. The first are several times superior to the second category both in productivity and in the quality of components, but this is not the topic of our article. We will focus on the general basis of the device's operation.

The brush cutter works as follows: the engine (two- or four-stroke, electric motor) under the influence of fuel sets the shaft in motion, and it transmits torque to the spool. There are modifications where the procedure is carried out without a shaft - the engine is installed at the bottom of the device and directly transmits the speed to the working base.

All elements are attached either to a solid rod or to a flexible shaft. A handle with keys for operation and a starter are also installed there.

Since the reason that the trimmer does not pick up speed well is more typical for gasoline options, we will pay special attention to this category. Most of its malfunctions are directly related to improper use of the device or ignorance of basic maintenance rules. As a result, the lawn mower refuses to work and does not gain momentum.

Always read the user manual before use. It also describes possible situations why the trimmer does not gain momentum.

When you turn it on for the first time, follow this sequence so as not to harm the performance of the equipment:

• Turn on the start of revolutions on the handle;
• Press the silicone gas pump, which is located near the engine. This needs to be done about 3-5 times;
• Close the air duct on the filter;
• Set the throttle lever to maximum speed. There is a lock on the brush cutter so that the lever does not fall off when starting the engine;
• Turn on the electric starter or pull the starter lacing several times until a characteristic sound and spool speed are heard.

If the brush cutter turns on, but does not pick up speed and stalls, place the air duct in the half-open position and repeat the process. When the device starts working, press the lever to reduce the speed. Open the air valve and start mowing.

The petrol trimmer does not develop full power - what is wrong?

The problem arises when the engine operates normally at idle, but when you press the lever, the gasoline trimmer does not pick up speed and may even stop.

The problem is not uncommon and occurs even in the most popular types of models and manufacturers.For example, if the trimmer is idle for a long time, it may not gain momentum.

When working with the trimmer, constantly monitor its condition. One uncharacteristic sound can cause a breakdown and the purchase of a new device. For greater safety, if the device behaves “differently”, stop, turn off the system and wait 15-20 minutes, let the car cool down. And if the problem does not go away, we look for the reason why the lawn mower is not gaining momentum.

Reasons why the trimmer does not develop speed

External signs

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The reasons why a lawn mower is not gaining momentum vary. Some are not even related to device failure, for example:

• Dirt or dust gets on the filter.
• Filling with a low-quality fuel mixture.
• Using bad gasoline or expired oil.
• Contamination of engine components, which prevents the device from gaining speed.

If dirty, the carburetor will accumulate a lot of carbon deposits. This is the reason why the trimmer does not gain momentum.

Internal problems that the gasoline trimmer does not develop speed

Technical faults occur in both old and new devices. Don’t be surprised - even a new trimmer engine may not develop speed. We check the ignition and mixture supply system for serviceability:

1. When the scythe starts and slows down or even does not start, the problem may be in the spark plug. Dark soot appears on it - a sign of low-quality gasoline and poor carburetor performance.
2. A flooded fuel hose is another problem that prevents a calm car from gaining momentum.
3. If you work for a long time without cleaning the parts, the muffler may also become clogged. Check the system for dark particles and clean the pipe, then the engine will start and start working like new.

If the problem is in the motor itself and you don’t know what else to do, be sure to take it to any mechanic. You are unlikely to do anything inside the engine yourself, especially not correctly. And you will always have time to damage the device.

Maintaining gas trimmer parts to prevent problems

In order not to wastefully disassemble the brush cutter, it is worth diagnosing each zone separately - the problem can be in one or several parts. Where to look and what to check - read on.

Carburetor

One of the main components for the correct operation of the trimmer. In order for the part to function as required, adhere to the following conditions:

• Remove and clean the part every month;
• Adjust the idle speed according to the manufacturer's instructions;
• If you can’t do the setup yourself, take it to a specialist.

One of the popular reasons for engine failure is that the carburetor cable is not tensioned. To fix the problem, you first need to disassemble the carburetor, clean it, and only then tighten the cable. Just don’t overdo it so that it doesn’t get tight like a string.

It is worth checking additionally: the intake needle, membrane, adjustment lever, dampers and other components of the carburetor. They may also have problems that interfere with the correct operation of the brush cutter.

Spark plug

Even if you don’t know what a normally working spark plug should look like, just remove it, dry it and sand it. Return the part to its place.

You can also check the distance on the main part. Maximum – 1 mm gap between parts of the igniter.

If the spark plug is too black, then there is no point in cleaning it - just buy a new one and install it on the engine. Then the whole system will work with renewed vigor.

Filtration system

A clogged air filter can sometimes affect performance even more than problems with the spark plug. To check if this is the problem, start the engine with the filter removed. If it starts, wash the filter sponge in gasoline or other detergent. Or you can buy a new one - it will only benefit your trimmer.

Clogged filters do not allow the fuel mixture to pass into the engine, so it stalls or does not start. The lack of gasoline can be corrected by simple cleaning: both the filter under the cap and the fuel hose filter (located inside the plastic fuel tank).

Motor malfunctions

The internal combustion engine is the basis for the operation of a gasoline device. What could be wrong with it if the motor does not gain power:

1. The fuel mixture was incorrectly prepared, or its expiration date has long expired;
2. The piston rings are broken;
3. The cylinder or piston is scratched and cracked;
4. The device is used without interruption.

You should be careful when repairing the engine. This is because if you fasten all the parts incorrectly, you may be left without a trimmer or even with injuries. Entrust the matter to a specialist!