Installing The Camshaft And Cylinder Head - Yamaha 2004 YXR660 Service Manual

CAMSHAFT AND CYLINDER HEAD
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d. Place a 400 ~ 600 grit wet sandpaper on
the surface plate, and resurface the head
using a figure-eight sanding pattern.
NOTE:
To ensure an even surface rotate the cylinder
head several times.
L LLL L LLL L L LLL L L LLL L
INSTALLING THE CAMSHAFT AND
CYLINDER HEAD
1. Install:
• cylinder head gasket
• cylinder head
• bolts (M9: 1 ~ 6)
38 Nm (3.8 m · kg, 27 ft · lb)
• bolt (M6: 7)
10 Nm (1.0 m · kg, 7.2 ft · lb)
NOTE:
• Tighten the bolts in the proper sequence.
• Follow the numerical order shown in the illus-
tration. Tighten the bolts in two stages.
2. Install:
• camshaft
• camshaft sprocket
M MMM M MMM M M MMM M M MMM M
a. Turn the crankshaft counterclockwise with a
wrench.
b. Align the "I" mark 1 on the rotor with the
stationary pointer 2 on the A.C. magneto
cover. When the "I" mark is aligned with the
stationary pointer, the piston is at the Top
Dead Center (TDC).
CAUTION:
Do not turn the crankshaft during the cam-
shaft installation.
ENG
L LLL L L LLL L LLL
New
M MMM M M MMM M MMM