Checking The Camshaft Sprocket; Checking The Tappet Covers; Checking The Timing Chain Tensioner - Yamaha YFM7FGPW Service Manual

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CYLINDER HEAD
5. Remove:
• cylinder head
NOTE:
_
• Loosen the bolts in the proper sequence as
shown.
• Loosen each bolt 1/2 of a turn at a time. After
all of the bolts are fully loosened, remove
them.
EBS00224

CHECKING THE CAMSHAFT SPROCKET

1. Check:
• camshaft sprocket
Wear/damage → Replace the camshaft
sprocket and timing chain as a set.
a 1/4 of a tooth
b Correct
1 Roller
2 Sprocket
EBS00227

CHECKING THE TAPPET COVERS

1. Check:
• tappet covers
• camshaft sprocket cover
Cracks/damage → Replace.
EBS00229
CHECKING THE TIMING CHAIN
TENSIONER
1. Check:
• timing chain tensioner
Cracks/damage → Replace.
2. Check:
• one-way cam operation
Rough movement → Replace the timing
chain tensioner.
3. Check:
• timing chain tensioner cap bolt
• spring
• one-way cam
• timing chain tensioner rod
Damage/wear → Replace the defective
part(s).
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