Rocker Arm & Shaft

1. Check for wear or damage to contact surface of rocker arm shaft and rocker arm, replacing as necessary.
2. Check oil clearance between rocker arm and shaft as follows, replacing as necessary.
a. Measure rocker arm inner diameter, which should be .748-.7493 inch (19-19.033mm).
b. Measure rocker arm shaft diameter, which should be .7464-.7472 inch (18.959-18.98mm).
c. Subtract shaft diameter from rocker arm diameter. Oil clearance should be .0008-.0029 inch (.02-.074mm).
d. If clearance exceeds .0039 inch (.1mm), replace rocker arm and/or shaft as necessary.