3.6 Valve clearance adjustment
Valve adjustment should only be performed on a cool engine.
（1）Remove spark plug, valve cover bolt, valve cover and valve cover gasket.
Spark plug Valve cover gasket
Valve cover
（2）Insert a feeler gauge in the spark plug installation hole; Rotate the engine so the piston is at top
dead center and both intake and exhaust valves are closed.
If the spark plug is in the top position and intake valve is in the START position, please blow fan blade
And let the spark plug in top position while the outlet valve is in the stop station.
3）Insert a feeler gauge between the rocker arm and the valve and measure the valve clearance.
Valve clearance
intake： 0.06 ± 0.02 mm
：
（4）If adjustment is necessary, proceed as follows:
a. lock the rocker lever adjustment screw and loosen the nut.
b. move the rocker lever adjustment screw until the correct clearance is achieved.
c. tighten the nut on the rocker arm adjustment screw.
d. recheck the clearance after adjustment.
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