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Tecnico cb250 Manual page 43

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General Information
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1,.
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Torque
Torque
Fastener Type
N·m (kq-m, ft-lb)
Fastener Type
N·m (kg-m, h-Ibl
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
35 (3.5, 25!.
6 mm flange bolt (10 mm head) and
12(1.2,9)
1 2 mm hex bolt and nut
55 (5.5, 40)
nut
8 mm flange bolt and nut
27(2.7,20)
10 mm flange bolt and nut
40 (4.0,29)
Torque Values
s
d
d
Torque specifications listed below are for irnportantfasteners. Others should be tightened
to
standard torque valueslisted above.
NOTE
1. Apply sealant to the threads.
2. Apply a locking agent to the threads.
3. Apply molybdenum disúlfide oil to the threads and flange surface.
4. Left hand threads.
5. Stake.
6. Apply oil to the threads and flange surface.
7. Apply c1ean engine oiltothe O-ringo
8..
T orque wrench scale reading using a special tool.
9. Apply grease to the threads and flange surface.
10. UBS bolt.
11. U-nut.
12. Alock bolt. Do not reuse.
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Engine
Thread
Torque
Item
Q'ty
dia. (mm!
N·m (kq-rn, ft-Ib)
Rernarks
.--
Lubricatíon System:
Oil pump mounting screw
3
6
10(1.0,7)
Cylinder Head/Cylinder:
Spark plug
2
10
'12 (1.2, 9)
Valve adjusting lock nut
4
5
10(1.0,7)
Cylinder head/camshaft holder nut
8
8
23 (2.3, 17)
Cylinder head bolt
3
6
12 (1.2,9)
Cam sprocket bolt
2
7
20 (2.0, 14)
Note 2
Cylinder head cover bolt
..
2
6
10/1.0, 7)
Clutch/Gearshift Linkage:
-
Clutch lifter bolt
o '
4
6
12 (1.2,9)
. Clutch center lock nut
1
16
53 (5.3, 38)
Note 5
Shift drum stopper arm bolt
1
6
12{l.2, 9)
Gearshift return spring pin
.1
8
25 (2.5, 18!
Note 2
Primary drive gear lock nut
1
16
54 (5.4, 39)
Crankcase/Crankshaft:
.-
Orive sprocket bolt
2
6
12
n.z.
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 ClutchlAlternator:
Flywheel bolt
1
10
60 (6.0, 43)
Starter clutch mounting screw
3
6
9 (0.9, 6.5)
Note 2, 5
Stator mounting screw
3
5
. 6 (0.6, 4.3)
Stator wire clamp screw
1
5
6 (0.6, 4.3)
Pulse generator mountingscrew
2
6
10
n.o.
7)
Starter motor terminal nut
1
6
6 (0.6, 4.3) .
1-14

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