Yamaha WaveRunner - Cylinder Head Removal; Cylinder Head Inspection

5-65
E
POWR
CYLINDER HEAD
SERVICE POINTS
Cylinder head removal
1. Remove:
• Cylinder head bolts
1
2. Remove:
• Cylinder head nuts
NOTE:
Loosen the cylinder head nuts in the sequence
shown.
Cylinder head inspection
1. Eliminate:
• Combustion chamber carbon deposits
(with a rounded scraper)
NOTE:
Do not use a sharp instrument to avoid damag-
ing or scratching:
• spark plug bore threads
• valve seats
2. Check:
• Cylinder head
Damage/scratches
→
Replace.
• Cylinder head water jacket
Mineral deposits/rust
→
Eliminate.