Removing The Camshafts - Yamaha YZFR1W 2007 Service Manual

EAS23810

REMOVING THE CAMSHAFTS

1. Remove:
• Pickup rotor cover
Refer to "CRANKSHAFT POSITION SEN-
SOR" on page 5-37.
2. Align:
• "T" mark "a" on the pickup rotor
(with the crankcase mating surface "b")
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a. Turn the crankshaft counterclockwise.
b. When piston #1 is at TDC on the compres-
sion stroke, align the "T" mark "a" on the
pickup rotor with the crankcase mating sur-
face "b".
NOTE:
TDC on the compression stroke can be found
when the camshaft lobes are turned away from
each other.
▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲
3. Loosen:
• Camshaft sprocket bolts "1"
Camshaft wrench
90890-04143
YM-04143
4. Remove:
• Timing chain tensioner "1"
• Gasket
5. Remove:
• Camshaft caps "1"
• Dowel pins
ECA13720
CAUTION:
To prevent damage to the cylinder head,
camshafts or camshaft caps, loosen the
camshaft cap bolts in stages and in a criss-
cross pattern, working from the outside in.
6. Remove:
• Intake camshaft "1"
• Exhaust camshaft "2"
NOTE:
To prevent the timing chain from falling into the
crankcase, fasten it with a wire "3".
5-11
CAMSHAFTS