Yamaha XVS250 2001 - Maintenance Specifications Engine

2-15
MAINTENANCE SPECIFICATIONS
SPEC
MAINTENANCE SPECIFICATIONS
ENGINE
Tightening torques
Part to be tightened
Part name
Thread
size
Q’ty
Tightening
torque
Remarks
g
size
y
Nm mkg
Cylinder head and cylinder
Cylinder head (timing chain side, long)
Cylinder head (timing chain side, short)
Cam sprocket cover (hexagon)
Cam sprocket cover
Cylinder head (exhaust pipe)
Cylinder head cover bracket
Cylinder head cover
Spark plug
Tappet cover
Valve clearance adjusting lock nut
Stopper plate
Camshaft sprocket
Timing chain guide stopper
Plate
Timing chain tensioner
Timing chain tensioner cap
A.C. magneto
Oil pump cover and rotor housing
Cover
Oil pump assembly
Oil filter cover
Engine oil drain bolt
Carburetor joint and cylinder head
Air filter stay and cylinder
Silencer assembly
Fuel pump
Air filter assembly and stay
Exhaust pipe joint
Rear exhaust pipe
Front exhaust pipe and muffler
Exhaust pipe cover
Muffler mount
Crankcase
Generator cover
Crankcase cover
Clutch cover
Clutch cable holder and clutch cover
Left crankcase straight plug
Oil check plug
Nozzle
One-way clutch
Primary drive gear
Clutch boss
Clutch spring
Push lever adjusting screw lock nut
Bolt
Bolt
Bolt
Bolt
Bolt
Stud bolt
Bolt
Screw
Nut
Bolt
Bolt
Bolt
Bolt
Bolt
Bolt
Nut
Screw
Screw
Screw
Bolt
Bolt
Bolt
Bolt
Bolt
Bolt
Bolt
Nut
Bolt
Bolt
Bolt
Bolt
Screw
Bolt
Bolt
Bolt
Bolt
Bolt
Screw
Bolt
Nut
Nut
Screw
Nut
M8
M6
M6
M6
M6
M6
M6
M6
M10
M45
M5
M6
M8
M6
M6
M6
M6
M12
M6
M6
M6
M6
M35
M6
M6
M6
M6
M6
M6
M6
M8
M6
M10
M6
M6
M6
M6
M6
M14
M6
M8
M8
M16
M16
M6
M6
8
4
4
4
2
4
2
4
2
4
4
2
2
4
2
4
2
1
1
1
3
3
1
4
2
2
2
2
4
2
1
2
2
14
8
3
9
2
1
1
2
3
1
1
4
1
22
12
12
10
10
7
7
0.7
13
18
7
12
26
10
10
10
8
80
7
7
7
10
34
10
10
10
10
7
10
10
12
7
25
7
10
10
10
10
34
7
3
30
80
75
8
8
2.2
1.2
1.2
1.0
1.0
0.7
0.7
0.07
1.3
1.8
0.7
1.2
2.6
1.0
1.0
1.0
0.8
8.0
0.7
0.7
0.7
1.0
3.4
1.0
1.0
1.0
1.0
0.7
1.0
1.0
1.2
0.7
2.5
0.7
1.0
1.0
1.0
1.0
3.4
0.7
0.3
3.0
8.0
7.5
0.8
0.8