How to Adjust Valve Clearance of Motorcycle (Reprinted)

First, open the two maintenance covers on the left side of the crankcase, rotate the magneto rotor counterclockwise with a socket wrench, and the sign of piston top dead center appears from the upper observation hole. At this time, there should be a gap between lifting the two adjusting screws up and down by hand, and then adjusting the valve clearance by hand. The method is to loosen the lock nut and turn the screw, and then tighten the lock nut.

What matters is the gap value: most manufacturers' instructions indicate 0.08 mm (8 lines).

Accurate valve clearance of the engine can ensure the normal power output of the engine.

Excessive valve clearance will cause noise in the engine, and insufficient intake and exhaust of the engine will lead to power decline because the valves cannot be fully opened; However, the valve is too small, which directly affects the vehicle's failure to start normally and the power is insufficient after starting. This is because the valve can not be completely closed, which reduces the compression ratio of the cylinder, can not completely burn out the mixer in the cylinder, and at the same time, the fuel consumption will increase for no reason. The engine has a crisp noise, which is probably the sound of excessive valve clearance. Please don't adjust yourself. It is recommended to find professional maintenance personnel to adjust.