Repair of lawn mowers is carried out, taking into account the principle of operation and the cause of the breakdown of the unit. often the device fails in 3-4 years after the active service.
Repair lawn mowers is necessary in the following cases:
- the device does not start;
- the unit quickly stalls after starting;
- motor does not work at full capacity.
Causes of failure.
Reasons for the failure of lawn mowers:
In the first case, you will need to replace the housing, handles, knives, and wheels for lawn mowers. When locking knives, the unit stops mechanically. Such a breakdown is associated with an attempt to mow tough or tall grass. Repair mowers are to release the cylinder from the stuck grass and scroll it the other way.
When operating a lawnmower with a blunt or damaged knife, grass mows unevenly. In this case, the device can vibrate or stop abruptly.
To make the machine work properly, it is recommended to sharpen the blades with a file (angle of 30 °). Otherwise, an abrasive tape is used. The gap should be between the two swords, touching the strip. The device turns on periodically (15 seconds each). If the knives are sharp, then the strip is removed, the gap is adjustable.
If the blades are in the wrong position, the cylindrical mower makes severe and uncontrollable movements. Usually, the difference between the cutting elements should be thinner than a sheet of paper. Otherwise, the clearance is adjusted. Pre-recommended to study the device instructions, unplug from the outlet. When the connection is loose, a whistle appears. The device vibrates and rattles. Repairing a lawnmower means adjusting bolted joints.
If the belt has broken or stretched, then it is necessary to replace it. It will require loosening the screws. Then the pulley moves, the belt is removed. A new part is put on a small one and then on a large pulley. Gear returns to its original position. The next step is to check the tension of the new belt. Deflection should not exceed 4 mm.
Malfunction of electric models.
The reasons for the unexpected shutdown of the electric lawn mower are associated with a cord break or lack of current. In the first case, it is recommended to check the cable for open circuit. To replace the power cord, you need to unplug the power cord, open and remove the switch cover.
Before unscrewing the cable clamp? It is necessary to remember the circuit of its connection to the switch. To disconnect the cord, use a hex (diameter 1 mm). The clamp is released, the conductors are dismantled. A multimeter is used to test the cable for an open circuit. If necessary, install a new cord. In this case, the reverse sequence.
In the second case, it is recommended to connect another device to the mains. Electrical apparatus may not work if the fuse in the plug is damaged. To carry out repairs, you need to disassemble the plug. To do this, use a screwdriver and a tester.
Motor problems occur when the mower overheats:
- as a result of long work;
- due to overload (the cutting element is blocked by some object).
In the first case, it is recommended to wait a few minutes for the motor to cool. In the second case, you will need to remove the stuck item. The effectiveness of the cooling system depends on the condition of the air filter. A dirty device does not allow air well, which contributes to the shutdown of the device. Experts advise to clean and change the filter one time in three months (with constant use of the lawn mower). If an electric motor breaks down, there is a corresponding odor and noise. In this case, you will need to replace the drive.
The design of the gasoline mower in contrast to the electric analog is more complicated. In some cases, the unit is not repairable. If the engine does not start or stops immediately, then it is recommended to check the ignition. For this, you need to dismantle the candle. A dry candle indicates a problem in the supply system, and a wet one indicates a carburetor. In such cases, the repair work is carried out by professionals.
If there is black soot on the candle, then it is replaced. It does not take into account the cause of the lawn mower breakage (carburetor setting, low-quality fuel). Often in gasoline models clogged fuel hose. If gasoline does not flow, then the saloon is cleaned with a needle, and the fuel filter is replaced with a new analog.
If the mower does not mow the grass, then check the knives. If necessary, they are replaced with new cutting elements or sandpaper. In the second case, it is recommended to use goggles and thick gloves. You can sharpen knives mowers with special tools that are included in the device.
If the knives are blocked by long grass, then it is recommended to turn off the mower. A wooden stick scrolls the cylinder (in the other direction) until its free rotation. If the mower does not work as a result of a breaker malfunction, then it is recommended to check and replace it with a serviceable counterpart.
If there is no voltage in the outlet, the shield is checked. Some devices are equipped with thermal protection. When such a system is triggered, the ventilation grilles are checked for contamination. A soft brush is used to clean them.
Conclusion on the topic.
Repair of mechanical mowers is carried out at blunting or damage to the cutting elements. In this case, experts recommend independently dismantle the removable knives. For their sharpening used emery. If necessary, the battery is replaced in the battery models.
Before repairing the mower, the type of motor is determined:
- Electric. motor powered by current. The unit shuts down due to overheating or overload. Some models do not provide overheating protection. With mechanical damage to the engine will require the help of professionals.
- Petrol. the device fails as a result of overheating, overload, breakage of the chain supply of oil and fuel. Petrol lawn mowers, unlike electric models, are repaired longer.
To extend the life of the mower, it is recommended to follow the rules of operation of the device.