Engine Unit Replacement

Pry up the claws of the ventilation baffle plate.

Using a screwdriver with its tip taped and a hammer, tap out the 6 spark plug tube gaskets.

Using a 32 mm socket wrench, tap in 6 new spark plug tube gaskets to the head covers.

NOTICE:

1. Keep the lip free from foreign matter.
   
2. Do not tap on the oil seal at an angle.
   

Return the claws of the ventilation baffle plate to its original positions.

Using a screwdriver, pry out the oil seal.

HINT:

Tape the screwdriver tip before use.

NOTICE:

Do not damage the surface of the oil seal press fit hole.

Using SST and a hammer, tap in a new oil seal until its surface is flush with the timing chain cover edge.

SST

09316-60011(09316-00011)

NOTICE:

1. Keep the lip free from foreign matter.
   
2. Do not tap the oil seal at an angle.
   
3. Make sure that the oil seal edge does not stick out of the timing chain case.
   

Apply MP grease to the lip of the oil seal.

Place the oil seal retainer on wooden blocks.

Using a screwdriver and a hammer, tap out the oil seal.

Using SST, tap in a new oil seal until its surface is flush with the oil seal retainer edge.

SST

09223-15030

NOTICE:

1. Keep the lip free from foreign matter.
   
2. Do not tap on the oil seal at an angle.
   

Heat the cylinder head to approximately 80 to 100°C (176 to 212°F).

Place the cylinder head on wooden blocks.

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

SST

09201-10000(09201-01050)
09950-70010(09951-07100)

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

Standard cylinder bore diameter:

10.285 to 10.306 mm (0.4049 to 0.4057 in.)

Select a new guide bush (STD or O/S 0.05).

Standard bush bore diameter:

Bush Size	Specified Condition
Use STD	10.335 to 10.356 mm (0.4069 to 0.4077 in.)
Use O/S 0.05	10.285 to 10.306 mm (0.4049 to 0.4057 in.)

HINT:

1. If the bush bore diameter of the cylinder head is greater than 10.344 mm (0.4072 in.), machine the bush bore diameter to between 10.383 and 10.394 mm (0.4088 and 0.4092 in.).
   
2. If the bush bore diameter of the cylinder head is greater than 10.344 mm (0.4072 in.), replace the cylinder head.
   

Heat the cylinder head to approximately 80 to 100°C (176 to 212°F).

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

Standard protrusion height:

9.1 to 9.9 mm (0.3582 to 0.3900 in.)

SST

09201-10000(09201-01050)
09950-70010(09951-07100)

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

Heat the cylinder head to approximately 80 to 100°C (176 to 212°F).

Place the cylinder head on wooden blocks.

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

SST

09201-10000(09201-01050)
09950-70010(09951-07100)

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

Standard cylinder bore diameter:

10.285 to 10.306 mm (0.4049 to 0.4057 in.)

Select a new guide bush (STD or O/S 0.05).

Standard bush bore diameter:

Bush Size	Specified Condition
Use STD	10.335 to 10.356 mm (0.4069 to 0.4077 in.)
Use O/S 0.05	10.285 to 10.306 mm (0.4049 to 0.4057 in.)

HINT:

1. If the bush bore diameter of the cylinder head is greater than 10.344 mm (0.4072 in.), machine the bush bore diameter to between 10.383 and 10.394 mm (0.4088 and 0.4092 in.).
   
2. If the bush bore diameter of the cylinder head is greater than 10.344 mm (0.4072 in.), replace the cylinder head.
   

Heat the cylinder head to approximately 80 to 100°C (176 to 212°F).

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

SST

09201-10000(09201-01050)
09950-70010(09951-07100)

Standard protrusion height:

9.30 to 9.70 mm (0.3661 to 0.3819 in.)

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

Remove the stud bolts.

Using an E8 "TORX" socket wrench, install the stud bolts.

Torque:

10 N*m{102 kgf*cm, 7 ft.*lbf}

Remove the straight pin.

Using a plastic-faced hammer, tap in new straight pins to the cylinder block.

Standard protrusion:

Item	Specified Condition
Pin A	23 mm (0.91 in.)
Pin B	6 mm (0.24 in.)
Pin C	11 mm (0.43 in.)
Pin D	9 mm (0.35 in.)

Remove the ring pins.

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

Remove the stud bolts.

Using E6 and E8 "TORX" socket wrenches, install the stud bolts.

Torque:

10 N*m{102 kgf*cm, 7 ft.*lbf}for stud bolts A and B

4.0 N*m{41 kgf*cm, 35 in.*lbf}for stud bolt C

Using a plastic-faced hammer, tap in a new straight pin as shown in the illustration.

Standard protrusion height:

18.0 to 19.0 mm (0.71 to 0.75 in.)