Yamaha XT660R Service Manual page 252

2
3
1
4
a
CYLINDER HEAD
2. Install:
• cylinder head
• washers
• cylinder head bolts
NOTE:
• Lubricate the cylinder head bolt threads and
muting surface with engine oil.
• Install the washers with their blunt surface
facing the bolt seat.
3. Tighten:
• cylinder head bolts 1
• cylinder head bolts 2
• cylinder head bolts 3
• cylinder head bolts 4
NOTE:
_
Tighten the cylinder head bolts in the proper
tightening sequence as shown and torque
them in two stages.
4. Install:
• camshaft sprocket
(onto the camshaft)
NOTE:
Make sure that the projection a on the decom-
pressor lever is in the position shown in the
illustration.
M MMM M MMM M
a. Turn the primary pulley counterclockwise.
b. Align the "I" mark b on the A.C. magneto
c
rotor with the stationary pointer c on the
A.C. magneto cover.
b
5 - 13
ENG
New
= 135 mm (5.31 in)
50 Nm (5.0 m · kg, 36 ft · lb)
= 145 mm (5.71 in)
50 Nm (5.0 m · kg, 36 ft · lb)
45 Nm (4.5 m · kg, 32 ft · lb)
10 Nm (1.0 m · kg, 7.2 ft · lb)
M MMM M M MMM M M MMM M M MMM M MMM