Disassembly

CYLINDER HEAD

COMPONENTS:

DISASSEMBLY

1. REMOVE VALVE LIFTER

HINT: Arrange the valve lifters and shims in correct order.

2. REMOVE SHIMS

HINT: Arrange the valve lifters and shims in correct order.

3. REMOVE VALVES
a) Using SST, compress the valve spring and remove the 2 keepers.
SST 09202-70020 (09202-00010)
b) Remove the spring retainer, the valve spring, the valve and the spring seat.

HINT: Arrange the valves, valve springs, spring seats and spring retainers incorrect order.

c) Using needle-nose pliers, remove the oil seal.

REPLACEMENT
1. REPLACE VALVE GUIDE BUSHING

a) Gradually heat the cylinder head to 80 to 100°C (176 to 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 the following dimension: 10.335 to 10.356 mm (0.4069 to 0.4077 inch)

Both Intake And Exhaust:

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 to 100°C (176 to 212°F).

f) Using SST and a hammer, tap in a new guide bushing to the specified protrusion height.

Protrusion Height:

SST 09201-01055, 09950-70010 (09951-07100)

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 (09951-00240, 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.