Cylinder Head: Disassembly and Assembly
Cylinder Head: Disassembly and AssemblyDISASSEMBLY
1) Remove spark plug.
2) Remove valve lifter.
^ Identify installation positions, and store them without mixing them up.
3) Remove valve collet, valve spring retainer and valve spring using Tool.
Tool numbers
: KV10116200 (J-26336-B)
: KV10115900 (J-26336-20)
CAUTION:
^ When working, be careful not to damage valve lifter holes.
^ Do not remove valve spring seat from valve spring.
4) Push valve stem to combustion chamber side, and remove valve.
^ Identify installation positions, and store them without mixing them up.
5) Remove valve oil seal using Tool.
Tool numbers: KV10115600 (J-38958)
6) When valve seat must be replaced, refer to [Cylinder Head: Inspection After Disassembly].
7) When valve guide must be replaced, refer to [Cylinder Head: Inspection After Disassembly].
8) Remove spark plug tube, if necessary.
^ Remove it from cylinder head using suitable tool.
CAUTION:
^ Be careful not to damage cylinder head.
^ Once removed, spark plug tube will be deformed and cannot be reused. Do not remove it unless absolutely necessary.
ASSEMBLY
1) Install valve guide if removed.
2) Install valve seat if removed.
3) Install valve oil seal using Tool.
Tool numbers: KV10115600 (J-38958)
NOTE:
Install with the valve oil seal to match dimension as shown.
Height (H): 11.8 - 12.4 mm (0.465 - 0.488 in)
4) Install valve.
NOTE:
Install larger diameter to intake side.
5) Install valve spring (with valve spring seat).
NOTE:
^ Install smaller pitch (valve spring seat side) to cylinder head side.
^ Confirm identification color of valve spring.
Intake: Pink
Exhaust: Green
6) Install valve spring retainer.
7) Install valve collet using Tool.
Tool numbers: KV10116200 (J-26336-B)
: KV10115900 (J-26336-20)
^ Install valve collet with a magnet hand.
CAUTION:
When working, be careful not to damage valve lifter holes.
^ Tap valve stem edge lightly with a plastic hammer after installation to check its installed condition.
8) Install valve lifter.
^ Install it in the original position.
9) Install spark plug tube if removed.
^ Press-fit it into cylinder head as follows:
a) Remove old sealant from cylinder head side installation hole.
b) Apply sealant within approximately 12 mm (0.47 in) from edge of spark plug tube press fit side.
Use Genuine High Strength Locking Sealant or equivalent.
c) Press-fit spark plug tube so that its height (H) is as specified using suitable tool.
Standard press-fit height (H): 41.2 - 42.2 mm (1.622 - 1.661 in)
CAUTION:
^ When press-fitting, be careful not to deform spark plug tube.
^ After press-fitting, wipe off any protruding sealant on top surface of cylinder head.
10) Install spark plug.