Cylinder Head Replacement

Heat the cylinder head sub-assembly to 80 to 100°C (176 to 212°F).

Place the cylinder head sub-assembly on wooden blocks.

Using SST and a hammer, tap out the intake valve guide bush.

SST

09201-01055
09950-70010(09951-07100)

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

Standard Bush Bore Diameter:

Item	Specified Condition
STD	10.285 to 10.306 mm (0.405 to 0.406 in.)
O/S 0.05	10.335 to 10.356 mm (0.407 to 0.408 in.)

Select a new intake valve guide bush.

New Valve Guide Bush:

Item	Specified Condition
Bush Bore Diameter	10.333 to 10.344 mm (0.4068 to 0.4072 in.)	10.383 to 10.394 mm (0.4088 to 0.4092 in.)
Use Bush	STD	O/S 0.05

HINT:

Standard bush length: 43.0 to 44.0 mm (1.69 to 1.73 in.)

Heat the cylinder head sub-assembly to 80 to 100°C (176 to 212°F).

Place the cylinder head sub-assembly on wooden blocks.

Using SST and a hammer, tap in a new intake valve guide bush to the specified protrusion height.

SST

09201-01055
09950-70010(09951-07100)

Standard protrusion height:

9.8 to 10.2 mm (0.386 to 0.402 in.)

Using a sharp 5.5 mm reamer, ream the intake valve guide bush to obtain the standard clearance between the intake valve guide bush and valve stem.

Standard oil clearance:

0.025 to 0.060 mm (0.000984 to 0.00236 in.)

Heat the cylinder head sub-assembly to 80 to 100°C (176 to 212°F).

Place the cylinder head sub-assembly on wooden blocks.

Using SST and a hammer, tap out the exhaust valve guide bush.

SST

09201-01055
09950-70010(09951-07100)

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

Standard Bush Bore Diameter:

Item	Specified Condition
STD	10.285 to 10.306 mm (0.405 to 0.406 in.)
O/S 0.05	10.335 to 10.356 mm (0.407 to 0.408 in.)

Select a new exhaust valve guide bush.

New Valve Guide Bush:

Item	Specified Condition
Bush Bore Diameter	10.333 to 10.344 mm (0.4068 to 0.4072 in.)	10.383 to 10.394 mm (0.4088 to 0.4092 in.)
Use Bush	STD	O/S 0.05

HINT:

Standard bush length: 43.0 to 44.0 mm (1.69 to 1.73 in.)

Heat the cylinder head sub-assembly to 80 to 100°C (176 to 212°F).

Place the cylinder head sub-assembly on wooden blocks.

Using SST and a hammer, tap in a new exhaust valve guide bush to the specified protrusion height.

SST

09201-01055
09950-70010(09951-07100)

Standard protrusion height:

7.6 to 8.0 mm (0.299 to 0.315 in.)

Using a sharp 5.5 mm reamer, ream the exhaust valve guide bush to obtain the standard clearance between the exhaust valve guide bush and valve stem.

Standard oil clearance:

0.030 to 0.065 mm (0.00118 to 0.00256 in.)

Remove the ring pins.

Using a plastic-faced hammer, tap in a new ring pin until the pin stops.

Standard Ring Pin:

Item	Height	Width	Protrusion Height
Ring pin	7 mm (0.276 in.)	10 mm (0.394 in.)	2.5 to 3.8 mm (0.0984 to 0.150 in.)