Yamaha XVS650 - 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
pinion gear)
Crankcase cover (left)
Bolt
M6
13
10
1.0 7.2
Crankcase cover (right)
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
2 - 12