Lawn Mower Does Not Develop Momentum Cause

Why the Stihl trimmer doesn’t pick up speed: reasons how to start a Stihl lawnmower. How to start a Stihl lawn mower

The main steps for starting a Stihl lawn mower are:

  1. Before using the petrol trimmer, you should read the instructions and check the Stihl trimmer for each spare part. Then you can collect it.
  2. An important step is fuel preparation and refueling. You need to prepare the mixture in a measuring container. Gasoline and oil are poured into it in the specified ratio. Using a funnel, the mixture is poured into the fuel tank.
  3. At the first start, turn on the ignition without opening the air damper. Place the device on a flat and smooth surface for stability. Now. You need to sharply pull the cord 3 to 5 times. The air damper can be opened in any case: the engine has started or not.

It may take up to 15 jerks for the first start. After starting the engine, it is worth turning on idle to warm up. After a while, it is stopped with the Stop button.

Note! This manual is universal, as in order to start the Stihl lawn mower, you need to follow the same steps.

In the case of starting an electric trimmer, everything is much simpler: you need to read the instructions and act in accordance with it. Instead of fuel, there is electricity. The appliance is powered by the mains, so it is important to provide sufficient power for the trimmer to pick up speed.

Both the petrol and electric trimmer require a thorough inspection after each use.

By following the instructions, you can quickly fix any minor damage yourself. But sometimes it is not possible to start the unit with your own hands. In this case, it is better to seek professional help, especially if it relates to a problem with the engine and the development of rpm at the trimmer or lawn mower.

The reasons

Trimmers are reliable and durable (provided they are properly maintained, of course). Most often, malfunctions occur due to contamination of structural elements.

If the motor of your lawn mower does not start, does not pick up speed, does not reach the power you need, or suddenly stalls, the reason may be:

  • Low-quality fuel (fuel mixture), it may be in long-term storage or in non-compliance with the recipe for preparing the mixture;
  • Grass is wrapped around the shaft of the fishing line / knife;
  • Clogged air filter / muffler;
  • Unbalanced carburetor.

Engine problems

Engine problems are more serious. Several variants of the problem are possible:

  • Damaged carburetor;
  • Drive problems.

In the case of a carburetor problem, you should first pay attention to the condition of the cable. It may be weakened, which is what caused the problem. This requires a simple cable adjustment.

If this does not help, then you need to check the usage parameters. The stated performance standards can be found in the technical data sheet of the device. Sometimes it is enough to disassemble the device: wash, clean and assemble.

Note! The solution to the problem with the carburetor can be the purchase of a new element or contacting the service for professional services.

The trimmer drive is only fully checked if the manipulation of the carburetor does not give the desired result.

For some reason, the Stihl electric scythe does not develop its full power

When using the electric trimmer, speed problems can also occur. The reasons here are completely different than those of fuel braids.

You can fix problems yourself

The trimmer does not develop the required power because:

  • The voltage in the network is below the required minimum for the device more than 10%;
  • There was a failure in the soft start (if such a system is available);
  • There was a malfunction of the brush assembly;
  • The motor winding is burnt;
  • Rotating parts sometimes jam.
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To adjust the voltage, you should first check its power. If it does not meet the standards, you should increase it with a stabilizer.

Repair of the soft start system is carried out only in the service center.

Note! When the brushes wear out, you just need to replace them. When installing new ones, it is recommended to clean all surfaces with which they come in contact.

To adjust the voltage, you should first check the power.

If the motor windings are burning, you need to change the electric motor.

Jamming of rotation parts can occur for various reasons. To eliminate them, you should revise the entire drive assembly.

For your information! The latter problem may arise with another unit of this company. The Stihl secateurs, and sharpening the disc with scissors will be its solution.

The lawn mower does not pick up speed, the cause of the malfunction and its elimination

If the candle does not emit a spark after recovery manipulations with a suitable distance between the electrodes, then it will be necessary to check the quality of the connections of the parts of the electronic circuit of the device. When the wires are in perfect order, it will come in handy to precisely install the latest part.

Changing candles is an easy process that is inexpensive, if you can return the old ones, then generally free of charge. To complete the work, only a candle wrench and a file are useful.

If there is constant high-spirited pollution and wear of the candles, then it is necessary to find the problem of these abnormal phenomena deeper.

If our client remains in order with fuel, filters and spark plugs, then the next source is possibly an internal combustion engine. He will have subsequent mechanical failures:

  • Problems with the carburetor;
  • Difficulties with the motor drive mechanism.

There is a small cable in the carburetor section. It can subside and lead to the dilemma in question. Therefore, when dealing with the carburetor, you should first check the condition of the cable, and if necessary, tighten it (but not to the maximum). The main thing is not to overdo it with a stretch, so that it does not crack under load.

After that, it is necessary to check the operational options of the carburetor, which are manufactured to correspond to the characteristics given in the annotation. If they are installed correctly, and there is no suitable effect, then the part should be disassembled, washed, cleaned, purged with a pump, which remains for our client to make its course and assemble it back. The carburetor itself is without mechanical damage.

If it is impossible to independently restore the performance of the carburetor, it is better to replace it with the latest part or resort to the services of experts.

If the passage, when adjusting or changing the carburetor does not give the desired result, you need to clean the drive mechanism and lubricate the cable located inside it with oil.

The problems associated with the engine can be removed on your own if you have the required abilities, alas, it is better to use the services of a service center for this purpose. His specialists will carry out a comprehensive diagnosis of the trimmer and establish the exact cause of the drop in rpm.

Disruption of normal fuel circulation on the trim tab also results in lawn mower is not gaining momentum. You will like it better for the following main reasons:

  • Air leakage caused by cracks in the hoses;
  • Clogging of the gasoline pump, which came out due to the introduction of poor fuel or due to the formation of sediment on the day of the tank and getting it into the system;
  • Muffler pollution in other words catalyst.

Without the help of others, to eliminate the problems considered, the following must be done:

  • Go over the gas pump, removing dirt;
  • Change tubes and hoses through which the fuel circulates;
  • Clean the muffler and the mesh;
  • To install a new catalyst, which will be expensive due to the precious metals in the personal computer.
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All work to eliminate problems in the fuel circulation system is done without the help of others. However, it should be done carefully in order to hold the parts, or after assembling the braid there are no “extra”.

When operating a trimmer, where an electronic engine is installed, difficulties also occur with a set of revolutions. However, they are caused by completely different eyes problems, in comparison with fuel streamers. The electric motor does not develop the required rotation speed in this version:

  • If the voltage in the supply network is lower than the nominal value for the electric motor by quite 10%;
  • In case of problems in the soft start system (if this unit is installed);
  • When there are obstacles with the brush assembly;

Electric scythe brush unit

In order to eliminate the problem with the voltage, you need to check its value in the outlet with a multimeter or tester, from which the power of the electric cable is required. If it is less than a small permissible value, then to increase it it is useful to turn off electrical appliances or install a stabilizer.

An indisputable condition necessary for the normal operation of the trimmer is the introduction of an extension cord with a cross-section of conductors suitable for the power of the scythe motor.

To repair the soft start unit, it is useful to have the proper knowledge in electronics, therefore it is better to contact a service center. There it will be determined by its maintainability or the need to change. Without the help of others, there is an option to check the button, as it is also called, to find the block diagram and try to figure it out here.

The brushes will of course wear out, and therefore contact will disappear, which leads to stoppages of the electric motor. The brushes are easy to replace. The process is determined by the lawn mower model used. Along the way, it will also come in handy to clean our client remains contacting surfaces.

For which the design of burning the windings is intended, if you continue to mow the grass or bush, the electric motor will quickly burn out. This will be accompanied by the appearance of a burning aroma, right up to the melting of individual parts. It will come in handy to change the electric motor.

Wedging of the rotating parts occurs for various reasons. To identify and eliminate them, it will be useful to sort out the drive unit. There are models in which the number of revolutions is automatically adjusted depending on the load, increasing with its increase. At their idle speed the rotation speed drops.

Reasons why the lawn mower does not develop momentum

There are five main reasons why the Stihl trimmer does not develop speed:

Filters

A clogged air filter is another reason for the unreliable operation of the device. To check the involvement of this element in the malfunction, you need to start the lawn mower without it. A dirty filter can be washed in gasoline, dried or replaced with a new one.

A clogged fuel filter does not allow fuel to enter the cylinder, and the engine stalls at full throttle due to an elementary shortage of gasoline. This element is located inside the tank on the intake hose. To fix the problem, instead of the old filter, put a new one on the hose or thoroughly rinse the one that was removed.

Fuel system

The functioning of the fuel system is of great importance for the trouble-free operation of the petrol trimmer. Gasoline passes through all its assemblies and parts, so they must be cleaned regularly. In addition, only high quality fuel must be used. To prepare a combustible mixture in a two-stroke engine, motor vehicle oil cannot be used, since it has insufficient qualities.

How to start a Stihl lawn mower

The main steps for starting a Stihl lawn mower are:

Lawn Mower Does Not Develop Momentum Cause
  1. Before using the petrol trimmer, you should read the instructions and check the Stihl trimmer for each spare part. Then you can collect it.
  2. An important step is fuel preparation and refueling. You need to prepare the mixture in a measuring container. Gasoline and oil are poured into it in the specified ratio. Using a funnel, the mixture is poured into the fuel tank.
  3. At the first start, turn on the ignition without opening the air damper. Place the device on a flat and smooth surface for stability. Now. You need to sharply pull the cord 3 to 5 times. The air damper can be opened in any case: the engine has started or not.
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It may take up to 15 jerks for the first start. After starting the engine, it is worth turning on idle to warm up. After a while, it is stopped with the Stop button.

Note! This manual is universal, as in order to start the Stihl lawn mower, you need to follow the same steps.

In the case of starting an electric trimmer, everything is much simpler: you need to read the instructions and act in accordance with it. Instead of fuel, there is electricity. The appliance is powered by the mains, so it is important to provide sufficient power for the trimmer to pick up speed.

Both the petrol and electric trimmer require a thorough inspection after each use.

By following the instructions, you can quickly fix any minor damage yourself. But sometimes it is not possible to start the unit with your own hands. In this case, it is better to seek professional help, especially if it relates to a problem with the engine and the development of rpm at the trimmer or lawn mower.

Any person who owns a summer cottage or land plot is well aware of the problems of dealing with excess vegetation. Now a trimmer has come to the rescue, which has successfully replaced the usual braid in this field. This unit is very convenient in operation, but it, like any mechanism, tends to fail due to difficult working conditions or incorrect operation. It is quite common for the trimmer to not pick up speed. To understand this problem, it is necessary to understand some aspects related to the operation of the apparatus.

Diagnostics and elimination of problems of electric motors

Trimmer malfunctions can be as follows:

  • Insulation failure or cable break;
  • Malfunctions in the area of ​​the cutting tool;
  • Damaged socket or plug.

To deal with these breakdowns, you do not need to disassemble the entire apparatus.

In case of serious engine problems, you will have to disassemble it. To do this, you need to unscrew a few screws. Having gained access to the parts of the motor, you need to carry out the following actions:

  • Check the degree of wear of the brushes. Unsuitable parts will need to be replaced with new ones;
  • Ring the motor winding. The resistance must be high;
  • Check the stator and rotor. To test the rotor winding with a multimeter, measure the resistance: large deviations from the norm indicate a malfunction, the absence of resistance on the stator winding also indicates a breakdown (in a similar way, the stator case is diagnosed).

Low rp problems are common with cheap trimmers. However, with improper maintenance, this also affects hand mowers such as the Huter, Patriot 3055, Echo.

Low quality fuels

The benzotrimmer does not pick up speed in the case of poor quality fuel. It may stall or not start at all. To check the quality of the fuel, you need to inspect the spark plugs. They are the main indicators for problems with the combustion chamber.

In the presence of sediment formed on the candles, plaque, the old fuel is drained and another, high-quality.

It must be remembered that the trimmer or lawn mower must be filled with good quality gasoline and those brands of fuel that the manufacturer indicated in the technical passport of the device.

For your information! The candles should be thoroughly cleaned of plaque, and only after that they should be placed in the combustion chamber again.