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CB250 Addendum
Torque Values
r-r-:
Standard
Fastener Type
Torque
Fastener Type
Tarque .
N'm [kgf-m, Ib-ft)
N'm (kgf'm, Ib-ft)
5 mm hex bolt and nut
5 (0.5, 3.6)
5 mm screw
4 (0.4, 2.9)
6 mm hex bolt and nut
10 (1.0, 7)
6 mm screw
9 (0.9, 6.5)
8 mm hex bolt and nut
22 (2,2, 16)
6 mm flange bolt (8 mm head)
9 (0.9, 6.5)
10 mm hex bolt and nut
34(3.5, 25}
6 mm flange bolt (10 mm head) and
12 (1.2, 9)
12 mm hex bolt and nut
54 (5.5, 40)
nut
8 mm flange bolt and nut
26 (2.7, 20)
1
°
mm flange bolt a nd n ut
39 (4.0, 29)
Torque specifications listed below are for important fasteners. Others should be tightened to standard torque values listed
aboye.
NOTE
1.· Apply sealant to the threads.
2. Applya locking agent to the threads.
3. Apply molybdenum disulfide oil to thethreads and flange surface.
4. Left hand threads.
5. Stake.
6. Apply oil to the threads and flange surface.
7. Apply clean engine oil to the O-ringo
8. Torque wrench scale reading usinga special tool.
9. Apply grease to the threads and flange surface.
10. UBS bolt.
11.U-nut.
12. Alock bolt. Do not reuse.
E
r--
ngme
I
Item
O'tv
Thread dia.
Tarque
Remarks
(mm)
N'm (kqf-rn, Ib-ft)
.,
Lubrication System:
Oil pump mounting screw
3
6
10 (1.0, 7)
Cylinder Head/Cvlinder:
Spark plug
2
10
12(1.2,9)
Va/ve adjusting lock nut
I
4
5
¡
10(1.0,7)
Cylinder head/camshaft holder nut
8
8
I
23 (2.3, 17)
Cvlinder head bolt
3
6
i
12 (1.2, 9)
Cam sprocket bolt
2
7
20 (2.0, 14)
Note 2
Cylinder
h~d
cover bolt
2
6
,
10 (1.0, 7)
Clutch/Gearshift Linkage:
Clutch lifter bolt
4
6
12(1.2,9)
Clutch center locknut
1
16
74 (7.6,55)
Note 5, 6
Shift drum stopper arm bol! .
I
1
6
12(1.2,9)
Gearshift return spring pin
1
8
25(2.5,18)
Note 2
Primary drive gear lock nut
1
16
53 (5.4, 39)
Crankcase/Cran kshaft:
A
Drive sprocket bolt
2
6
12(1.2,9)
Oil drain bolt
1
12
25 (2.5, 18)
Crankshaft mounting bolt
5
8
23 (2.3, 17)
Crankshaft mounting nut
1
6
12 (1.2, 9)
Oil passage plate mounting screw
3
6
10(1.0,7)
Note 2
Starter Clutch/ Alternatar:
Flywheel bolt
1
10
59 (6.0, 43)
Starter clutch mounting screw
3
6
9 (0.9, 6.5)
Note 2, 5
Stator mountíng screw
3
5
I
6 (0.6, 4.3)
Stator wire clamp screw
1
5
I
6 (0.6, 4.3)
Pulse generator mounting screw
2
6
10 (1.0, 7)
Starter motor terminal nut
1
6
6 (0.6, 4.3)
19-12
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