Service Procedures

1. Remove the snap ring from the exhaust valve guide.
2. Using the press, remove the valve guide toward the cylinder block.
Rebore the valve guide hole of the cylinder head so that it may fit to the press-fitted oversize valve guide.

CAUTION: Do not install a valve guide of the same size again.

Valve Guide Hole:
0.05 oversize: 11.05 - 11.07 mm (0.4350 - 0.4358 inch).
0.25 oversize: 11.25 - 11.27 mm (0.4423 - 0.4437 inch).
0.50 oversize: 11.50 - 11.52 mm (0.4528 - 0.4535 inch).

3. Press-fit the valve guide until it protrudes 14.0 mm (0.551 inch) from the cylinder head top surface as shown in the illustration.

NOTE:
a. When press-fitting the valve guide, work from the cylinder head top surface.
b. Pay attention to the difference in length of the valve guides. The intake side is 45.5 mm (1.79 inch) and the exhaust side is 50.5 mm (1.99 inch).
c. After installing the valve guides, insert new valves in them to check for sliding condition.