Checking The Oil Delivery Pipe; Checking The Timing Chain Guide; Installing The Cylinder Head - Yamaha YFZ450S 2003 Service Manual

CYLINDER HEAD
NOTE:
_
To ensure an even surface, rotate the cylinder
head several times.
L LLL L LLL L L LLL

CHECKING THE OIL DELIVERY PIPE

1. Check:
• oil delivery pipe 1
Cracks/damage → Replace.
Clogged → Blow out with compressed air.

CHECKING THE TIMING CHAIN GUIDE

1. Check:
• timing chain guide (exhaust side)
Wear/damage → Replace.

INSTALLING THE CYLINDER HEAD

1. Install:
• timing chain guide (exhaust side)
• gasket
New
• dowel pins
2. Install:
• cylinder head
NOTE:
Pass the timing chain through the timing chain
cavity.
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ENG
L L LLL L L LLL L L LLL L LLL