Inspect the pushrods for straightness by rolling them on a flat pane of glass. Replace if bent. Issue 3: Clutch slipping under load or high RPMs
: Detailed intervals for oil changes (often every 1,000 km), air filter cleaning (every 1,500 km), and full spark plug inspections. Lubrication System Details : Specifications for the wet sump system 162fmj Engine Service Manual
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) Inspect the pushrods for straightness by rolling them
Worn crankshaft rod bearings or damaged main bearings. Requires complete crankcase splitting. If you(e.g., knocking, blowing smoke, losing power) air filter cleaning (every 1