Yamaha VMAX 2009 Service Manual page 296

9. Check that the timing chain is taut. If the
chain is slack, reinstall the timing chain ten-
sioner.
Rear cylinders-exhaust side
1. Find:
• Rear cylinders-exhaust camshaft installation
position
M MMM M MMM M M MMM M
a. Make sure that the "R" mark on the generator
rotor is aligned with the stationary pointer on
the generator cover.
b. Turn the crankshaft about a turn and 1/2 (553
degrees) counterclockwise until the "T1"
mark "a" on the generator rotor is aligned with
the stationary pointer "b" on the generator
cover.
TIP
Piston #1 is at TDC when the "T1" mark on the
generator rotor is aligned with the stationary
pointer on the generator cover.
b a
L LLL L LLL L L LLL L
2. Install:
• Exhaust camshaft "1"
• Exhaust camshaft caps "2"
ECA2S31034
NOTICE
Do not turn the crankshaft when installing
the camshaft to avoid damage or improper
valve timing.
TIP
• Make sure the punch mark "a" on the intake
camshaft gear is aligned with punch mark "b" in
the exhaust camshaft gear.
• Insert a cross-headed screwdriver "3" into one
of the holes of the exhaust camshaft gear, and
then rotate the outer exhaust camshaft gear
until both exhaust camshaft gears are aligned.
The teeth of both exhaust camshaft gears must
be aligned for installation.
M MMM M M MMM M M MMM M
L LLL L L LLL L L LLL L
• Make sure each camshaft cap is installed in its
original place. Refer to the identification marks
as follows:
Exhaust-left side: "2S3-83"
Exhaust-right side: "2S3-78"
MMM
1
3. Install:
• Exhaust camshaft cap bolts
LLL
ECA2S31035
NOTICE
The camshaft cap bolts must be tightened
evenly; otherwise, the cylinder head, cam-
shaft caps, and camshaft will be damaged.
TIP
• Lubricate the camshaft cap bolt mating surface
with molybdenum disulfide oil.
• Tighten the camshaft cap bolts in stages and in
a crisscross pattern.
4. Check:
• "I" mark on the intake camshaft gear (rear cyl-
inders)
(with the edge of the cylinder head)
• "I" mark on the intake camshaft gear (front
cylinders)
(above the edge of the cylinder head)
5-23
CAMSHAFTS
2
"2S3-83" "2S3-78"
a b
Exhaust camshaft cap bolt
10 Nm (1.0 m·kgf, 7.2 ft·lbf)
2
3