Avoid heat
The engine piston temperature is too high, which is easy to cause overheating and melting and cylinder holding; Rubber seals, triangular tapes, tires, etc. are overheated, which is easy to age prematurely, reduce performance and shorten service life; The coils of starter, generator, regulator and other electrical equipment are overheated and easily burned and scrapped
Avoid dirty
Dirty parts such as fuel filter, oil filter, air filter, hydraulic oil filter and various filter screens will lead to poor filtering effect Dirty radiator of water tank, radiator of cylinder block and cylinder head of air-cooled engine, radiator of cooler and other parts will lead to poor heat dissipation and excessive temperature
Avoid reaction
The engine cylinder gasket cannot be installed reversely during installation, otherwise it will cause premature ablation and damage of the cylinder gasket; Do not reverse the installation of engine fan blades; For tires with directional pattern and herringbone pattern, the ground mark after installation shall make the herringbone tip point to the rear
Avoid deficiency
Engine valve keys shall be installed in pairs. If they are missing or missing, the valve will lose control and damage the piston and other parts; The cotter pin, locking screw, safety plate or spring pad and other locking devices installed on the engine connecting rod bolt, flywheel bolt and transmission shaft bolt may lead to serious faults in use once they are omitted; Once the oil nozzle used to lubricate the gear in the engine timing gear chamber is missing, it will cause serious oil leakage
Avoid oil
If the paper filter element of engine dry air filter is stained with oil, it is easy to suck the mixture with high concentration into the cylinder, resulting in insufficient air, increased fuel consumption and reduced engine power; If the triangular tape is stained with oil, its corrosion and aging will be accelerated; If the brake shoe, friction plate of dry clutch and brake belt are stained with oil, it will threaten driving safety Tire rubber is very sensitive to oil corrosion. Contact with oil will soften or peel the rubber
Avoid washing
The paper air filter element of the engine cannot be cleaned with any oil; Leather parts should not be cleaned with oil
Pressure avoidance
If the tire casing is stored under pressure for a long time and does not turn over in time, it will be deformed due to extrusion; If the paper filter element of air filter and fuel filter is squeezed, it can not reliably play the role of filtration; Rubber oil seal, triangular tape and oil pipe shall not be squeezed
Avoid fire
Rubber products such as tires, triangular tape, cylinder liner water stop ring and rubber oil seal, if close to the fire source, will be easy to aging, deterioration or damage. On the other hand, they may also cause fire accidents
Avoid repetition
Some parts should have been used once, but some drivers or repairmen reuse them for saving or because they don't understand the "taboo", which is very likely to lead to accidents