Cylinder Head Replacement

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

Place the cylinder head on a wooden block.

Using SST, tap out the valve guide bush.

SST

09201-10000(09201-01060)
09950-70010(09951-07100)

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

Standard bush bore diameter:

10.985 to 11.006 mm (0.432 to 0.433 in.)

Standard Valve Guide Bush Diameter:

Item	Specified Condition
STD	11.033 to 11.044 mm (0.434 to 0.435 in.)
O/S 0.05	11.083 to 11.094 mm (0.436 to 0.437 in.)

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

Place the cylinder head on a wooden block.

Using SST, tap in a new valve guide bush to the specified protrusion height A shown in the illustration.

SST

09201-10000(09201-01060)
09950-70010(09951-07100)

Standard protrusion height:

9.0 to 9.4 mm (0.354 to 0.370 in.)

Using a sharp 6.0 mm reamer, ream the valve guide bush to obtain the standard specified clearance between the valve guide bush and valve stem.

Standard Overall Length:

Item	Specified Condition
Intake	0.025 to 0.060 mm (0.000984 to 0.00236 in.)
Exhaust	0.035 to 0.070 mm (0.00138 to 0.00276 in.)

Using a 6 mm hexagon wrench, remove the straight screw plug and gasket.

Using a 6 mm hexagon wrench, install a new gasket and straight screw plug.

Torque:

25 N*m{255 kgf*cm, 18 ft.*lbf}

Remove the ring pins.

Using a plastic-faced hammer, tap in new ring pins.

Standard protrusion:

4.4 to 5.6 mm (0.173 to 0.220 in.)

Using an E8 "TORX" wrench, remove the stud bolts.

Using an E8 "TORX" wrench, install new stud bolts.

Torque:

12 N*m{122 kgf*cm, 9 ft.*lbf}