In detail: do-it-yourself repair of a bosch rotak 1000 lawn mower from a real master for the site my.housecope.com.
Repair of lawn mowers is carried out taking into account the principle of operation and the cause of the breakdown of the unit. Most often, the device fails in 3-4 years after active use.
Repair of lawn mowers is necessary in the following cases:
the device will not start;
the unit quickly stalls after starting;
the motor is not running at full power.
Reasons for failure of lawn mowers:
In the first case, you will need to replace the body, handles, knives and wheels for lawn mowers. When the blades are blocked, the machine stops mechanically. Such a breakdown is associated with an attempt to mow hard or tall grass. Repairing the mower consists in freeing the cylinder from the stuck grass and rolling it in the other direction.
When operating the mower with a blunt or damaged blade, the grass is mowed unevenly. In this case, the device may vibrate or stop abruptly.
For the device to work properly, it is recommended to file the knives (30 ° angle). Otherwise, an abrasive tape is used. The gap should be between the 2 blades, touching the strip. The device is switched on periodically (15 seconds each). If the knives are sharp, then the strip is removed, the gap is adjusted.
If the blades are in the wrong position, the cylindrical lawnmower makes sudden and uncontrollable movements. Normally, the gap between the cutting elements should be thinner than a sheet of paper. Otherwise, the clearance is adjusted. It is preliminarily recommended to study the instruction manual of the device, to remove the plug from the socket. When the connection is loose, a whistle appears. The device vibrates and rattles. Repairing a lawn mower means adjusting the bolt connections.
If the belt breaks or stretches, then it must be replaced. This requires loosening the screws. Then the pulley moves, the belt is dismantled. The new part is slipped onto the small pulley and then onto the large pulley. The gear returns to its original position. The next step is to check the tension of the new belt. The deflection should not exceed 4 mm.
Video (click to play).
The reasons for the unexpected shutdown of the electric lawnmower are associated with a broken cord or a lack of current. In the first case, it is recommended to check the cable for breakage. To replace the power cord, you will need to unplug the power plug and open and remove the switch cover.
Before unscrewing the cable retainer? it is necessary to remember the diagram of its connection to the switch. To disconnect the cord, use a hexagon socket (1 mm diameter). The clamp is released, the conductors are dismantled. A multimeter is used to check the cable for breakage. A new cord is installed if necessary. In this case, the reverse sequence is observed.
In the second case, it is recommended to connect another device to the mains. Electrical devices may not work if the fuse in the plug is damaged. To carry out repair work, you will need to disassemble the plug. For this, a screwdriver and a tester are used.
Motor problems occur when the mower overheats:
as a result of long-term work;
overload (the cutting element is blocked by an object).
In the first case, it is recommended to wait a few minutes for the motor to cool down. In the second case, you will need to remove the stuck object. The efficiency of the cooling system depends on the condition of the air filter. A dirty device does not allow air to pass through well, which contributes to the shutdown of the device. Experts advise to clean and change the filter every 3 months (with constant use of the lawn mower).When the electric motor breaks down, there is a corresponding smell and noise. In this case, the drive will need to be replaced.
The design of a gasoline lawn mower, in contrast to an electric analogue, is more complicated. In some cases, the unit cannot be repaired. If the engine does not start or stops immediately, then it is recommended to check the ignition. To do this, you need to dismantle the candle. A dry plug indicates a problem in the feed system, and a wet plug indicates a carburetor. In such cases, repair work is carried out by professionals.
If the candle has black carbon deposits, then it is replaced. This does not take into account the reason for the breakdown of the lawn mower (carburetor setting, low-quality fuel). Often on petrol models, the fuel hose becomes clogged. If gasoline does not flow, then the saloon is cleaned with a needle, and the fuel filter is replaced with a new analogue.
If the mower does not cut the grass, then check the blades. If necessary, they are replaced with new cutting elements or sharpened on emery. In the second case, it is recommended to use protective goggles and thick gloves. You can sharpen the mower blades using the special tools included with the device.
If the blades are blocked by long grass, then it is advisable to turn off the mower. The cylinder is scrolled with a wooden stick (in the other direction) until it rotates freely. If the mower does not work as a result of a faulty switch, then it is recommended to check it and replace it with a working analog.
In the absence of voltage in the outlet, the shield is checked. Some devices are equipped with thermal protectors. When such a system is triggered, the ventilation grilles are checked for contamination. A soft brush is used to clean them.
Repair of mechanical mowers is carried out when the cutting elements are blunt or damaged. In this case, experts recommend dismantling the removable knives yourself. Emery is used to sharpen them. The battery is replaced if necessary in rechargeable models.
Before repairing the mower, the type of motor is determined:
Electric - the motor is powered by current. The unit shuts down due to overheating or overload. Some models do not have overheating protection. In case of mechanical damage to the engine, professional assistance will be required.
Gasoline - the device fails as a result of overheating, overload, breakdown of the oil and fuel supply circuit. Gasoline lawn mowers, unlike electric models, take longer to repair.