What is the valve clearance standard for the gy6125 motorcycle?

[StLola]

Motorcycles have larger valve clearances compared to other vehicle types. The intake valve clearance is 0.05-0.08 mm, and the exhaust valve clearance is 0.09-0.13 mm. Valve clearance should not be too large or too small: The valve clearance should be maintained at normal values to ensure the engine operates properly. If the valve clearance is too small, it can cause difficulties in cold starts, unstable idling, and accelerate wear on the rocker arms and camshaft. If the valve clearance is too large, it can lead to increased engine noise, insufficient intake and exhaust efficiency, and affect engine power. Introduction to valve clearance: Valve clearance is set to ensure the normal operation of the internal combustion engine's valve train. Since the valve train operates at high speeds and temperatures, components like the valve tappet and valve stem expand when heated, which can automatically push the valve open, causing the valve and valve seat to not close tightly and resulting in air leakage.