Yamaha YP250 Mobility Scooter User Manual


 
2-8
MAINTENANCE SPECIFICATIONS
SPEC
TIGHTENING TORQUES
ENGINE
Part to be tightened
Part name
Thread
size
Q’ty
Tightening
torque
Remarks
g
size
y
Nm mSkg
Oil check bolt
Exhaust pipe stud bolt
Spark plug
Cam sprocket cover
Cylinder head and cylinder
Cylinder head and cylinder
(Cam chain side)
Valve cover
Rotor
Valve adjuster locknut
Cam shaft bearing stopper
Cam sprocket
Cam chain tensioner
(Body)
(Plug)
Guide stopper 2
Water pump housing cover
Hose joint
Thermostatic valve cover
Filler neck supporting
Oil pump
Oil pump cover
Drain plug
Carburetor joint
Carburetor joint and carburetor
Air filter assembly
Air filter cover
Fuel pump
Exhaust pipe assembly
Muffler
Muffler and exhaust pipe
Protector (Muffler)
Protector (Exhaust pipe)
Crankcase (left and right)
Drain bolt
Oil filler
Transmission case cover
Crankcase cover (left)
Crankcase filter cover
Crankcase cover protector
Magnet cover
Bolt
Nut
Bolt
Bolt
Nut
Nut
Bolt
Bolt
Bolt
Bolt
Bolt
Bolt
Bolt
Bolt
Screw
Bolt
Bolt
Bolt
Nut
Bolt
Screw
Nut
Bolt
Bolt
Screw
Screw
Bolt
Bolt
Bolt
Bolt
Bolt
Bolt
M6
M8
M12
M6
M8
M6
M6
M16
M6
M6
M10
M6
M8
M6
M6
M6
M6
M5
M6
M3
M35
M6
M6
M6
M5
M6
M8
M10
M8
M6
M6
M6
M8
M14
M8
M6
M6
M6
M6
1
2
1
2
4
2
5
1
2
2
1
2
1
1
3
2
2
1
2
1
1
2
2
2
5
2
2
3
1
3
2
9
1
1
6
11
3
2
10
7
13
18
10
22
10
10
80
14
8
60
10
8
10
10
7
10
5
7
1
32
10
10
7
1
10
20
53
20
10
10
10
22
3
16
10
7
7
10
0.7
1.3
1.8
1.0
2.2
1.0
1.0
8.0
1.4
0.8
6.0
1.0
0.8
1.0
1.0
0.7
1.0
0.5
0.7
0.1
3.2
1.0
1.0
0.7
0.1
1.0
2.0
5.3
2.0
1.0
1.0
1.0
2.2
0.3
1.6
1.0
0.7
0.7
1.0