Yamaha YZFR6X(C) 2008 Service Manual page 222

2. Install:
• Timing chain "1"
• Exhaust camshaft "2"
• Intake camshaft "3"
(with the camshaft sprockets temporarily
tightened)
NOTE:
• Make sure the match marks "a" on the cam-
shaft sprockets are aligned with the cylinder
head edge "b".
• Be sure to install the timing chain so that the
exhaust side of the chain is taut and the
intake side is slack.
3. Install:
• Intake camshaft caps
• Exhaust camshaft caps
NOTE:
• Make sure each camshaft cap is installed in
its original place. Refer to the identification
marks as follows:
"I1", "I2": Intake
"E1", "E2": Exhaust
• Make sure the arrow mark "a" on each cam-
shaft points towards the right side of the
engine.
E2
I2
E1
E1
I1
I1
5-13
a
a
4. Install:
• Camshaft cap bolts
Camshaft cap bolt
10 Nm (1.0 m·kg, 7.4 ft·lb)
ECA13730
CAUTION:
The camshaft cap bolts must be tightened
evenly or damage to the cylinder head,
camshaft caps, and camshafts will result.
NOTE:
Tighten the camshaft cap bolts in stages and
in a crisscross pattern, working from the inner
caps out.
5. Install:
• Timing chain tensioner gasket "1"
• Timing chain tensioner "2"
Timing chain tensioner bolt
12 Nm (1.2 m·kg, 8.9 ft·lb)
NOTE:
• Be sure to install the timing chain tensioner
gasket so that its section with the "L" mark "a"
is protruding from the lower left side of the
timing chain tensioner.
• The punch mark "b" on the timing chain ten-
sioner should face up.
a
L
1
CAMSHAFTS
a
a
a
New
b
2