Yamaha 2009 YZF-R1Y, Руководство по обслуживанию

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CAMSHAFTS
5-17
EAS23810
REMOVING THE CAMSHAFTS
1. Remove:
• Pickup rotor cover 2
Refer to “PICKUP ROTOR” on page 5-43.
• Generator cover
Refer to “GENERATOR” on page 5-37.
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 air intake timing mark “c” and
exhaust camshaft sprocket air exhaust 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”
• Dowel pins
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”