Disassembly And Assembly

CYLINDER HEAD


Disassembly and Assembly


DISASSEMBLY
1. Remove spark plug using suitable tool.
2. Remove valve lifter.
- Identify installation positions, and store them without mixing them up.
3. Remove valve collet.





- Compress valve spring using Tool, attachment and adapter
(A). Remove valve collet using a suitable magnet hand.

CAUTION:
When working, be careful not to damage valve lifter holes.






4. Remove valve spring retainer and valve spring (with valve spring seat).

CAUTION:
Never remove valve spring seat from valve spring.
5. Push valve stem to combustion chamber side, and remove valve.

NOTE:
Identify installed positions, and store them without mixing them up.





6. Remove valve oil seal using Tool (A).






7. When valve seat must be replaced, Inspection After Disassembly.
8. When valve guide must be replaced, Inspection After Disassembly.

ASSEMBLY
1. Install valve guide if removed. Inspection After Disassembly.
2. Install valve seat if removed. Inspection After Disassembly.





3. Install valve oil seal.
- Install with a valve oil seal using Tool (A) to match dimension as shown.






NOTE:
Dimension (H) is height that measured before installing valve spring (with valve spring seat).






4. Install valve.
- Install larger diameter to intake side.









5. Install valve spring (with valve spring seat).
- Install smaller pitch (valve spring seat side) to cylinder head side (B).
- Confirm identification color (A) of valve spring.





6. Install valve spring retainer.
7. Install valve collet.
- Compress valve spring using Tool, attachment and adapter (A). 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 using suitable tool.