2-6
Service Data
Engine
Threads
Torque
Item
Q’ty
Remarks
Dia. (mm)
N•m (kgf•m, lbf•ft)
Cylinder head/valve:
Cam chain tensioner:
Adjust bolt
1
6
See page 4-41
Note 4
Adjust bolt tightening nut
1
8
10 (1.0, 7)
Clutch/gearshift linkage:
Clutch center nut
1
18
54 (5.5, 40)
Note 4
Clutch spring bolt
5
6
10 (1.0, 7)
Primary drive gear bolt
1
12
108 (11.0, 80)
Note 4
Shift drum center pin
1
8
22 (2.2, 16)
Note 2
Shift drum guide plate bolt
2
6
10 (1.0, 7)
Note 2
Shift drum stopper arm bolt
1
6
12 (1.2, 9)
Note 2
Alternator:
Left crankcase cover:
Sealing bolt, 6 mm
1
6
8 (0.8, 5.9)
Note 2
Sealing bolt, 8 mm
1
8
15 (1.5, 11)
Note 2
Flywheel nut
1
14
69 (7.0, 51)
Note 4
Ignition pulse generator bolt
4
5
5 (0.5, 3.7)
Note 2
Stator mounting bolt
3
5
5 (0.5, 3.7)
Note 2
Crankcase/Transmission:
Drive sprocket bolt
1
8
31 (3.2, 23)
Note 4
Right crankcase oil jet
1
5
2.0 (0.2, 1.5)
Note 2
Bearing set plate bolt
(Mainshaft, Shift drum)
4
6
10 (1.0, 7)
Note 2
Transmission holder bolt
6
6
10 (1.0, 7)
Note 4
Bearing set plate screw
1
6
10 (1.0, 7)
Note 2
Left crankcase sealing bolt
1
8
15 (1.5, 11)
Note 2
Piston oil jet
1
6
10 (1.0, 7)
Note 2
Reed valve stopper bolt
1
6
10 (1.0, 7)
Note 2
Balancer shaft nut
1
12
34 (3.5, 25)
Note 4
Connecting rod bolt:
new bolt tightening
2
8
See page 4-71
Note 4
at clearance check
2
8
See page 4-71
Note 4
Cylinder stud bolt
Cylinder head stud bolt
Cam chain tensioner adjuster
Reference value:
105.6 ± 1 mm
(4.16 ± 0.04 in)
17.5 ± 0.5 mm
(0.69 ± 0.2 in)
0 mm
(0 in)
Summary of Contents for NSF250R 2012
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