1988-1994 Honda TRX300 Fourtrax, 1988, 1990-1994 TRX300FW Fourtrax Service Manual, Page 78Get this manual
CYLINDER HEADV ALVES Remove the rocker arm shafts and rocker arms (INEX) from the cylinder head cover
Remove the bolt and valve lifter
INSPECTION
Inspect the rocker arm slipper surfaces for excessive wearCheck the a-rings of the rocker arm shafts for damage or fatigueInspect the rocker arms and shafts for wear or damage
(1) SLIPPER SURFACE
If the rocker arms require servicing or replacement, inspect the cam lobes for scoring, chipping or flat spots