Why do trimmers fall?

There are a number of different reasons for this common problem. While working with the device, it is possible to meet with both obvious problems, signs of which are clearly visible, and asymptomatic cases. The first option is the easiest to find a problem. If the trimmer is not gaining momentum, and there are no clear signs of breakdowns, then it will be necessary to consistently check the most typical cases of malfunctions, and if a reason is found, correct it.

Common causes of gasoline mowing at low revs

The problem when the motokosa is not gaining momentum is found mainly in gasoline units. This affects the technique of various models, for example, Husqvarna, Champion, Stihl.

With quality products such problems are less common than with cheap from unknown manufacturers.

Some of the structural elements with which problems may be associated are available to visual inspection, and to check the functioning of the other nodes, you will need to disassemble the motokosa.

The use of low quality fuel

The trimmer does not develop momentum if filled with low-quality fuel. For this reason, the engine may do not start or work "jerky""By changing the speed of rotation of the knife or fishing line.

To independently determine the quality of the gasoline used, perform the following steps.

1. Special key remove the candles.
2. They inspect their working contacts for the presence of a bloom of red brick color: if it exists, the fuel used contains significant inclusions of additives.

Candles in general often act as indicators that help identify problems with the combustion chamber of a gasoline engine, because they can be quickly removed and inspected.

If a raid is detected, it is necessary to drain the fuel poured into the tank and replace it with high-quality fuel. Used benzokosa should refuel only those brands of gasoline, which are specified by the manufacturers in the instruction manual. Also be sure to clean the candles from plaque before installing into place.

Air or fuel filter contamination

Another common reason for reducing the number of revolutions on the trimmer is the contamination of its air or fuel filters. In the first case, the problem lies in the fact that the fuel-air mixture entering the combustion chamber not saturated with oxygen, as a result, gasoline does not burn all. This does not allow the maximum power to be developed.

In order to check whether the air filter is really to blame, you need to remove it (after unscrewing the lid for this) and turn on the gas mower. If it works normally, then instead of a clogged filter element, you need to insert a new one.

If the situation has not changed after the done actions, then you need to pay attention to the fuel filter.The essence of the problem is similar to the previous case, but instead of a lack of oxygen there is little gasoline for normal operation of the device. This problem is also resolved by simply replacing the filter element. Air and fuel filters are inexpensive. It is easy to change them yourself, and all the work does not take much time.

It should be borne in mind that without a fuel filter, the use of a trimmer is prohibited by the instruction, otherwise it will be necessary to repair the piston assembly after a short time.

Spark plug problems

With continued use, the gasoline spark plugs eventually become polluted and wear. To check this, they are removed and inspected for the presence of soot. The problem can be eliminated in two ways: if possible, restore the old candle, or simply install a new one in its place.

In the first case, act as follows:

• unscrew and wipe the candle from the fuel;
• dry it without calcination;
• using a file or fine emery paper, remove the soot from the candle and check the gap between the electrodes (should be 1 mm);
• collect trimmer;
• give birth to benzokosu.

If the candle does not give off a spark after restoration manipulations with the desired distance between the electrodes, then you will need to check connection quality elements of the electrical circuit of the device. When with wires full order, you will definitely need to install a new part.

Replacing candles is a simple process that is cheap, and if you manage to restore the old ones, it is generally free. To work you need only a candle key and a file.

If regular rapid pollution and wear of candles occurs, then you need to look for the problem of these abnormal phenomena deeper.

Engine problems

If the fuel, filters and spark plug are okay, then the next source could be a gasoline engine. It may have the following mechanical damage:

• carburetor problems;
• problems with the drive mechanism of the engine.

In the carburetor section there is a small cable. It can fall and lead to the problem in question. Therefore, being engaged in the carburetor, you should first check cable condition, and if necessary, tighten (but not to the limit).The main thing is not to overdo it with a stretch so that it will not crack under load.

After you need to check carburetor performance settingswhich should correspond to the parameters given in the instruction. If they are installed correctly, but there is no desired effect, then the part should be disassembled, rinsed, cleaned, pumped through all its strokes and reassembled. The carburetor itself must be free from mechanical damage.

If it is impossible to self-repair the carburetor, it is better to replace it with a new part or use the services of professionals.

In the case when the adjustment or replacement of the carburetor does not give the desired result, it is necessary to clean the drive mechanism and lubricate the cable located inside it.

The problems associated with the engine, you can fix it yourself with the required skills, but it is better to use the services of a service center. Its specialists will conduct a comprehensive diagnosis of the trimmer and determine the exact cause of the fall in revolutions.

Failure in the fuel circulation system

Violation of the normal circulation of fuel on the trimmer also leads to the fact that the benzocos does not gain momentum. This may be due to the following main reasons:

• air leakage, which is caused by cracks in the hoses;
• the clogging of the gasoline pump, which occurred due to the use of low-quality fuel or because of the formation of sediment on the bottom of the tank and getting it into the system;
• pollution silencer or catalyst.

Independently for troubleshooting of the considered problems it is necessary to do the following:

• to sort out the fuel pump, removing the pollution;
• replace pipes and hoses through which fuel circulates;
• clean the muffler and the mesh on it;
• put a new catalyst, which is expensive because of the content of precious metals in it.

All troubleshooting work on the fuel circulation system can be done independently. But it should be done carefully so as not to lose parts, or after the assembly of the spit there are no “extras” left.

Possible causes of problems in electric braids

During the operation of the trimmer, on which the electric motor is installed, problems with a set of revolutions also occur.But they are caused by completely different malfunctions, compared with fuel braids. The electric motor does not develop the required rotation speed in such cases:

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

• in case of burning the motor windings;
• if wedging of rotating parts occurs.

In order to exclude voltage problem, it is required by a multimeter or tester to check its value in the outlet from which power is supplied to the electrocircuits. If it is less than the minimum acceptable value, then to increase it, you will need to turn off all electrical appliances or install a stabilizer.

A prerequisite for the normal operation of the trimmer is the use of an extension cord with a cross section of the cores corresponding to the power of the spit motor.

For soft start repair You will need to have the appropriate knowledge in electronics, so it is best to contact the service center. There are determined with its maintainability or the need for replacement.You can check the button yourself or find the block diagram and try to figure it out.

Brushes may wear out, as a result, the contact will disappear, which leads to motor stops. Brushes replace easy. The peculiarities of the process are determined by the model used for the mowers. Along the way, you also need to clean all the contact surfaces.

When burning windings, if you continue to mow the grass or shrub, the electric motor will quickly burn. This will be accompanied by the appearance of the smell of burning, until the melting of individual parts. Need to replace the electric motor.

Wedging rotating parts happens for various reasons. To identify and eliminate them, you will need to go through 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 idling speed of rotation decreases.

The video shows an algorithm of actions to identify the most common reasons for which the trimmer does not gain the required momentum:

Conclusion

The market offers a wide selection of trimmers from various manufacturers.They are characterized by common reasons why turnovers are falling. Also, each unit is equipped with operating instructions. In it, the relevant section contains the necessary recommendations on this issue regarding the model used.

If in the process of self-troubleshooting a positive result was not achieved, it is better to seek help from specialists. You should also involve professionals in solving the problem in the absence of minimal experience and skills in such a business so as not to harm. The most difficult knot is the engine. Work with him is permissible only for experienced craftsmen. When the motokosa is on warranty serviceThe best option is to contact the service center, where they will diagnose and repair equipment.