At first glance, a simple device for mowing grass using a two-stroke engine has fine tuning. Repair Trimmer should be entrusted to a specialist or to study the equipment itself, using the instruction manual. Maintenance spit leads necessary. Gearbox lubrication, fishing line replacement, teeth sharpening can be done in the home.
Malfunction Trimmer and how to eliminate them?
Any trimmer has a hollow rod in which a connecting cable is placed between the motor shaft and the lower gearbox, transmitting rotation to the working body with the cutting tool. In the upper part there is a carburetor and a motor, at the bottom there is a gearbox and a working tool, covered with a casing. In the middle part, there is a transverse handle in which the control buttons are located. For unloading hands, there is a discharge belt holding the operator’s torso bar.
When choosing Trimmer preferable apparatus with a two-stroke engine, rather than four-stroke. The two-stroke engine is more maneuverable and easier to repair. With a four-stroke knot, vibration is lower.
They follow this. Repair Trimmer consists of troubleshooting. Before troubleshooting, you need to diagnose, identify a non-working node.
It is important to know the lubrication points of the tool. Continuous care, cleaning the device after work will extend its life. Before work, tighten the mounting bolts, prepare the fuel and fill the tank.
The engine of the chainsaw does not start.
If the mechanism does not start, immediately stalls, successively check:
- is there fuel in the tank;
- serviceability of the spark plug;
- air and fuel filter cleanliness;
- cleanliness of the breather and outlet.
It is necessary to fill with a freshly prepared mixture based on AI-92, the oil is injected for accurate dosing with a medical syringe. This will help avoid expensive chainsaw repair.
It is necessary to make sure that the candle is working, gives a spark in contact with the body. In this case, it is essential to dry the candle channel, clean and dry the part itself. You can change the candle, but the channel still needs to be dried for 40 minutes. Check the serviceability of the high-voltage wire, may not always have a contact. Malfunction in the ignition unit when repairing the gas mowers, do not fix it yourself.
If the air filter is removed and the engine does not stall, the reason is that it needs to be replaced or cleaned. Replace the filter on the fuel lead with great care. After checking the purity of the breather, remove the silencer net, and clean the exhaust channel.
The next step will be the repair of the carburetor, where you have to find a fault and fix it, taking into account the tiny dimensions of the parts. If the simplest operations have not brought results, in order not to disturb the fine-tuning of the system, the repair is better to entrust a specialist. How to start the diagnosis and how to properly repair the gas mowers with your own hands, read the video:
Repair and lubrication gearbox Trimmer.
The role of the gearbox is to transfer torque from the motor shaft to the cutting tool through 2 gears with a different number of teeth. Torque is transmitted at an angle of 30. The number of revolutions of the lower blade is 1.4 times smaller than the engine revolutions. Gears must be clean and lubricated. To feed the oil on the teeth, there is a screw hole on top.
Lubrication gearbox Trimmer performed at least once per season. If the work is intense or there is extraneous noise in the lower node, it is necessary to lubricate more often.
First, the place where the cork closes the hole should be cleared of earth and grass. Unscrew the plug with an appropriate tool. It is included with the saw. We use grease from a tube. You are choosing either a native lubricant from the manufacturer or well-known quality compounds, such as Oleo-Mas, Litol.24, Azmol 158. Open the protective layer of the tube and lay the tool on its side. Slowly rotating the knife, squeeze the lubricant into the gearbox housing. The gears, turning, spread the composition with teeth over the entire surface. You can also pour grease with a special syringe.
A lack of a large amount of lubricant can cause the gearbox to heat up. Heard knock and backlash signal the destruction of the bearing or the ingress of dirt due to damage to the anthers. Bearing replacement must be carried out using a puller, without using the warm-up method.
If the gearbox staggers and drives along the rod, it is necessary to replace the housing, or to temporarily pull off the assembly with a clamp to secure it to the pipe. If the knife has ceased to rotate, it means that the gears do not engage. the teeth have been torn down or spilled. It will be necessary to replace the pair with a complete analysis of the node.
Disassembly of the gearbox with the dismantling of the shaft and bearing assemblies can not be done by heating. When heated, the metal loses its strength properties, and further, the node becomes unreliable. To remove the bearings, use a puller.
When replacing the gearbox, it is necessary to select a new node, guided by:
- pipe diameter;
- drive shaft diameter;
- drive shaft section;
- method of fastening protection
Care for cutting mowers.
The saw headset will dull or wear over time. Work with the tool becomes intense; the load increases, the quality of the swath deteriorates. Metal saw blades sharpen, plastic change.
If the fishing line serves as a cutting tool, it gradually wears out, and new material is inserted into the coil. The principle of the cutter with the fishing line is concluded in the gradual unwinding of the coil under the action of centrifugal force. When in contact with grass, the line wears off and is fed gradually from the reel. Special winding is needed so that the two cutting elements come out simultaneously and not be confused with each other.
The figure shows how to properly wind the line on the reel of the gas mowers. Before reeling a new line, it is necessary:
- unscrewing the nozzle, carefully remove the cover, holding the spring by hand;
- remove bits of old fishing line from the reel;
- measure out 5 meters of the new string and fold it in half;
- in the coil, guides under two ends, hook the middle part of the notch and wind in the direction of the arrows for each half of the string;
- hold the remaining 20 cm through special notches at the opposite ends of the coil;
- install the spring and washers, bring the ends of the fishing line out, close the drum cover.