Remove the clutch springs by loosening the four bolts evenly. Pull out the pressure plate, clutch lifter, and the friction/steel plate stack. Replace friction plates if they measure below 2.6 mm thick or show signs of burning.
A standard service manual for this engine covers the following critical tasks: 162fmj Engine Service Manual
Slide the cylinder barrel upward to expose the piston. Stuff a clean rag into the crankcase opening immediately to prevent the piston pin clips from falling inside. Remove the clutch springs by loosening the four bolts evenly
Rotate the flywheel counterclockwise until the aligns perfectly with the index notch on the crankcase index window. A standard service manual for this engine covers
While often marketed as a "200cc" engine, the actual displacement of a 162FMJ is calculated as follows: (Bore/2)^2 x Pi x Stroke x Cylinders With a standard stroke of 49.5mm or 53.8mm (depending on the variant), the actual displacement is roughly .
Excessive valve clearance. Re-adjust to 0.05 mm.
Turn clockwise until lightly seated, then back out