Yamaha XVS650 Service Manual page 35

Tightening torques
MAINTENANCE SPECIFICATIONS
ISPECI
~
I
Part to be tightened
Part name
Thread
o'ty
Tightening torque
Remarks
size
Nm
m·kg ft·lb
Cylinder head
Nut
M10
8 35 3.5 25.3
Cylinder head
Nut
M8 2 20
2.0 14.0
Cylinder head
Bolt M8 4
20
2.0 14.0
Cylinder head cover bracket
Nut
M10 8
35 3.5 25.3
Cylinder head (exhaust pipe)
Stud bolt
M8
4 15 1.5
10.8
Camshaft sprocket cover
Bolt
M6 4
10 1.0 7.2
Tappet cover
Bolt
M6
8 10 1.0 7.2
Rocker arm shaft (oil passage)
Bolt
M16 4
38
3.8
27
Bearing retainer (camshaft)
Bolt
M8
4 20 2.0
14.0
Use lock washer
Spark plug
-
M12 2 18 1.8 13.0
Cylinder
Bolt
M6
2 10 1.0 7.2
lower cylinder head cover
Bolt
M6
6 10 1.0 7.2
Upper cylinder head cover
Screw M6 8 5 0.5
3.6
Connecting rod
Nut
M8 4
36
3.6
26.0
~
Rotor
Bolt M10
1
80
8.0
57.9
Valve adjusting locknut
Nut
M6
4 14 1.4 10.1
Camshaft sprocket
Bolt M10 2
55 5.5 39.8
Timing chain tensioner
Bolt
M6 4
12 1.2 8.7
Timing chain guide
Bolt
M6
4 10 1.0 7.2
Oil pump
Bolt
M6 3 7
0.7 5.1
Oil strainer cover
Bolt
M6
3
10 1.0 7.2
Oil filter cover
Bolt
M6 5 10 1.0
7.2
Carburetor joint
Bolt
M6
4 12 1.2
8.7
Air filter case stay
Bolt
M6
2 12 1.2 8.7
Air filter case assembly
Bolt
M6 2 12
1.2 8.7
Exhaust pipe joint (rear) and cyl-
Nut
M8 2 20
2.0
14.5
inder head
Exhaust pipe joint (rear) and
Bolt
M8
2 20 2.0 14.5
muffler assembly (rear)
Exhaust pipe (front)
Nut
M8
2 25 2.5 18.1
Exhaust pipe and muffler
Screw
M8
2 20
2.0 14.5
Muffler
Bolt M10 2 25 2.5
18.1
Crankcase (cylinder)
Stud bolt
M10 8
20
2.0
14.5
--G
Crankcase (cylinder)
Stud bolt
M8
2
13
1.3
9.4
--G
Crankcase
Bolt
M8
4 24
2.4 17.4
Crankcase
Bolt
M6 10
10 1.0 7.2
Bearing retainer (middle drive
Torx screw
M8 4 25
2.5
18.1
~ Stake
pin ion gear)
Crankcase cover (left)
Bolt
M6
13 10 1.0 7.2
Crankcase cover (rig ht)
Bolt
M6
11
10
1.0 7.2
Clamp
Bolt
M6
1
10 1.0
7.2
One-way clutch
Bolt
M8 6 20 2.0 14.5 --G
Primary drive gear
Nut
M10 1
70
7.0 50.6 Use lock washer
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