Service Manual

Valve Clearance Inspection and Adjustment

NOTE: Valve clearance inspection and adjustment must be done with the engine cold.

1. Rotate Engine to TDC (top-dead-center) of the

compression stroke.

2. Remove the valve cover. Be sure both valves are

completely closed and the decompression arm is not

holding the valve open.

3. Measure the clearance between the rocker

arm and the valve stem with a feeler gauge.

Intake: 0.0039” (0.10 mm)

Exhaust: 0.0059” (0.15 mm)

4. To adjust valve clearance:

- Hold the rocker arm pivot and loosen the pivot lock

nut.

- Turn the rocker arm pivot to obtain the

specified clearance.

- Hold the rocker arm pivot and tighten the pivot lock nut

to specification - 11 ft-lbs (15 Nm).

5. Recheck the clearance and readjust if necessary.

6. Inspect the valve cover gasket and replace if necessary. Install the valve cover and torque fasteners to

specification - 7.5 ft-lbs (10 Nm).