1. Reasons for engine unsteady operation:

The throttle is in the maximum position and the throttle is open; the spark plug is loose; water and dirt enter the fuel system; the air filter is too dirty; the carburetor is not adjusted properly; the fixed screw of the engine is loose: the crankshaft of the engine is bent. Excluding methods: lower throttle switch: press the outer line of the spark plug; clean the fuel tank and add clean fuel again; clean the air filter or replace the filter element; re-adjust the carburetor; check the fixed screw of the engine after quenching: correct the crankshaft or replace the new shaft.

2. The reason why the engine can't be extinguished:

The throttle line is properly installed on the engine; the throttle line is broken; the throttle is insensitive to movement; the extinguishing line is not contactable. Removal methods: reinstall the throttle line; replace the new throttle line; drip a small amount of oil into the throttle moving position; check or replace the flameout line.

Maintenance of lawn mower

1. Oil Maintenance

Before each use of the lawn mower, check the oil level to see if it is between the upper and lower scales of the oil gauge. The new engine oil should be replaced after 5 hours of use, another oil should be replaced after 10 hours of use, and the oil should be replaced regularly according to the requirements of the instructions. The oil change should be carried out in the engine under the condition of heat engine. Don't add too much oil, otherwise it will appear: big black smoke, insufficient power (excessive carbon deposition in cylinder, small spark plug gap). Engine overheating and other phenomena. Injection of oil can not be too little, otherwise it will appear: engine gear noise, piston ring accelerated wear and damage. Even Lava and other phenomena, resulting in serious engine damage.

2. Maintenance of air filters

Before and after each use, check whether the air filter is dirty and wash frequently. If the engine is too dirty, it will be difficult to start, black smoke and power shortage. If the filter element is paper, the filter element can be removed and dust adhering to it can be brushed off. If the filter element is spongy, after cleaning with gasoline, some lubricating oil can be dripped on the filter element properly to keep the filter element in a wet state, which is more conducive to adsorbing dust.

3. Radiator Maintenance

The main functions of the radiator are noise attenuation and heat dissipation. When the lawn mower is working, the flying grass chips will attach to the radiator, which will affect its heat dissipation function. Seriously, it will cause cylinder pulling and damage the engine. Therefore, after every use of mower, we should carefully clean up the sundries on the radiator.

The mower not only can be used in landscape greening, but also plays a very important role in agricultural production. It realizes agricultural mechanization, improves work efficiency, and also improves agricultural production efficiency. It is very important for us, a large agricultural country. With the rapid development of mechanization of agriculture, forestry and animal husbandry in China, the research of new mowers is developing in the direction of high speed, stability and energy saving.