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CYLINDER HEAD
4. Remove:
• Bolt (camshaft sprocket) 1
• Camshaft sprocket 2
TIP
Attach a wire a to the timing chain to prevent it
from falling into the crankcase.
5. Remove:
• Bolts (cylinder head)
• Cylinder head
TIP
• Loosen the bolts 1/4 turn each and remove
then after all are loosened.
• Loosen the bolts starting with the lowest
number one.
INSPECTION
Cylinder head
1. Eliminate:
• Carbon deposits (from the combustion
chambers)
Use a rounded scraper.
TIP
Do not use a sharp instrument to avoid damaging
or scratching:
• Spark plug threads
• Valve seats
2. Inspect:
• Cylinder head
Scratches/damage → Replace.
3. Inspect:
• Cylinder head warpage
Out of specification → Re-surface.
Warpage measurement and re-surfacing
steps:
• Attach a straightedge and a thickness gauge
on the cylinder head.
• Measure the warpage.
4-15
ENG
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