Yamaha XT660R 2004 Service Manual page 278

Manuals by Motomatrix / www.motomatrix.co.uk / The Solution For Lost Motorcycle Coded Keys
e
120˚
d
1
2
E
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120˚ a
120˚
f f
b
c
È
3
1
3
CYLINDER AND PISTON
5. Offset:
• piston ring end gaps
a Top ring
b Upper oil ring rail
c Oil ring expander
d Lower oil ring rail
e 2nd ring
f 20 mm (0.79 in)
È Exhaust side
6. Install:
• cylinder 1
• timing chain guide (exhaust)
NOTE:
_
• While compressing the piston rings with one
hand, install the cylinder with the other hand.
• Pass the timing chain and timing chain guide
(exhaust side) through the timing chain cav-
ity.
7. Install:
• washers
• cylinder bolts
NOTE:
• Lubricate the cylinder bolt threads and mut-
ing surface with engine oil.
• Install the washers with their blunt surface
facing up.
8. Tighten:
• cylinder bolts
• cylinder bolts
Cylinder bolt
E
1st
2nd
• cylinder bolts (timing chain side) 3
5 - 39
ENG
New
= 116 mm (4.57 in) 1
= 109 mm (4.29 in) 2
15 Nm (1.5 m · kg, 11 ft · lb)
50 Nm (5.0 m · kg, 36 ft · lb)
10 Nm (1.0 m · kg, 7.2 ft · lb)