Part 2

REPLACEMENT
1. REPLACE VALVE GUIDE BUSHINGS





a. Gradually heat the cylinder head to 80 - 100°C (176 - 212°F).





b. Using SST and a hammer, tap out the guide bushing.
SST 09201-01055, 09950-70010 (09951-07100)





c. Using a caliper gauge, measure the bushing bore diameter of the cylinder head.





d. Select a new guide bushing (STD or O/S 0.05).
If the bushing bore diameter of the cylinder head is greater than 10.306 mm (0.4057 inch), machine the bushing bore to this dimension: 10.335 - 10.356 mm (0.4069 - 0.4077 inch)
If the bushing bore diameter of the cylinder head is greater than 10.356 mm (0.4077 inch), replace the cylinder head.





HINT: Different the bushings are used for the intake and exhaust.





e. Gradually heat the cylinder head to 80 - 100°C (176 - 212°F).
f. Using SST and a hammer, tap in a new guide bushing to the specified protrusion height.
SST 09201-01055, 09950-70010 (09951-07100)





Protrusion height (H)





g. Using a sharp 5.5 mm reamer, ream the guide bushing to obtain the standard specified clearance between the guide bushing and valve stem.
2. REPLACE SPARK PLUG TUBE GASKETS





a. Bend the 4 ventilation case claws installed on the cylinder head cover to an angle of 90° or more.
b. Using a screwdriver, pry out the gasket.

NOTICE: Be careful not to damage the cylinder head cover. Tape the screwdriver tip.





c. Using SST and a hammer, tap in a new gasket until its surface is flush with the upper edge of the cylinder head cover.
SST 09950-60010 (09551-00240, 09951-00440, 09952-06010), 09950-70010 (09951-07100)

NOTICE: Be careful of the installation direction.

d. Apply a light coat of MP grease to the gasket lip.
e. Return the 4 ventilation case claws to its original position.