[SpudRider]

Important Lubrication Passages in the Top End of the Engine

When servicing the top end of the engine, it is also vital to keep the oil passages feeding the cylinder head clean from obstructions.

When removing the rocker cover from the cylinder head, it is not necessary to remove the two screws that lock the rocker pins, unless you need to replace either the rockers, or the rocker pins. If you do remove the rocker pins, always verify their correct orientation, or the oil lubrication passages will be in the wrong position. Improper orientation of the rocker pins will starve the cylinder head of oil, and damage the engine.





When the rocker cover is removed, verify the oil journal on both sides of the cylinder head is unobstructed. The oil journal is inside the red circles in the photographs below.