If the engine requires a top-end rebuild or lower-end repair, you will need to disassemble the motor. Top End Rebuild (Cylinder Head/Piston)
Ensure the engine is on the . Check this by wiggling the rocker arms with your fingers; both should have a tiny amount of play. If they are tight, rotate the crankshaft 360 degrees to find the correct "T" mark on the compression stroke. 162fmj Engine Service Manual
Excessive valve clearance or worn rocker arm bushings. If the engine requires a top-end rebuild or
9.0:1 or 9.2:1 (depends on manufacturer). Max Power: Approximately Max Torque: If they are tight, rotate the crankshaft 360
Remove the alternator cover and turn the crankshaft to Top Dead Center (TDC) on the compression stroke. Adjust Valve Gap: Use a feeler gauge. Intake Valve: 0.03-0.05 mm Exhaust Valve: 0.05-0.07 mm Tighten: Ensure the locknut is secure. C. Carburetor Tuning (PZ26/PZ27/PZ30)