Removing The Camshafts - Yamaha YZF-R1(B) 2012 Service Manual

EAS23810

REMOVING THE CAMSHAFTS

1. Remove:
• Pickup rotor cover 2
Refer to "PICKUP ROTOR" on page 5-42.
2. Align:
• "K" mark "a" on the pickup rotor
(with the crankcase mating surface "b")
ECA14B1034
When turning the crankshaft with a tool,
remove all the spark plugs.
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a. Turn the crankshaft clockwise.
b. When piston #1 is at BTDC 105° on the
compression stroke, align the "K" mark "a"
on the pickup rotor with the crankcase mat-
ing surface "b".
TIP
You can check that the #1 piston is at BTDC
105° by checking to see that the intake cam-
shaft sprocket timing mark "c" and exhaust
camshaft sprocket timing mark "d" are aligned
with the cylinder head surface "e".
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3. Remove:
• Timing chain tensioner "1"
• Gasket
4. Remove:
• Camshaft caps "1"
ECA13720
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.
5. Remove:
• Intake camshaft "1"
• Exhaust camshaft "2"
6. Remove:
• Camshaft sprocket "1"
TIP
Use the camshaft wrench "2" and loosen the
camshaft sprocket bolt.
Camshaft wrench
90890-04143
YM-04143
5-16
CAMSHAFTS