Honda CB250N Shop Manual page 164

CB250
Addendum
Torque Values
—
Standard
Fastener
Type
Torque
N-m
(kgf-m,
Ib-ft)
Fastener
lype
Torque
N-m
{kgf-m,
Ib-ft)
5
mm
hex
bolt
and
nut
6
mm
hex
bolt
and
nut
8
mm
hex
bolt
and
nut
10
mm
hex
bolt
and
nut
12
mm
hex
bolt
and
nut
5
(0-5,
3.6)
10
(1.0, 7)
22
(2,2, 16)
34
(3.5,
25)
54
(5.5,
40)
5
mm
screw
6
mm
screw
6
mm
flange
.bolt (8
mm
head)
6
mm
flange bolt (10
mm
head) and
nut
8
mm
flange bolt
and nut
10
mm
flange bolt
and
nut
.4
(0.4, 2.9)
9
{0.9,
6.5)
9
(0.9, 6.5)
12
(1.2, 9)
26
(2.7,
20)
39
(4.0,
29)
Torque
specifications
listed
below
are
for
important
fasteners.
Others should be tightened
to
standard torque values
listed
above.
NOTE
1. 'Apply sealant
to
the threads.
2.
Apply
a locking
agent
to
the threads.
3.
Apply
molybdenum
disulfide
oil
to the
threads 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-ring,
8.
Torque wrench
scale
reading using
a
special tool.
9.
Apply
grease
to
the threads
and
flange surface.
10.
UBS
bolt.
11.
U-nut.
12.
Alock
boit.
Do
not reuse.
i
—
tngine
—
—
_____
Item Q'ty
Thread
dia.
(mm)
Torque
N-m
(kgf-m,
Ib-ft)
Remarks
Lubrication
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
TO
(1.0, 7)
Clutch/Gearshift Linkage:
Clutch
lifter
bolt
.
4 6
12
(1.2, 9)
Clutch center
lock nut
1
16 74(7.6,55)
.
Note
5,
6
Shift
drum
stopper arm
bolt
1
6
12(1.2,9)
Gearshift return spring pin
1
8
25
(2.5,
18)
Note
2
Primary
drive gear
lock
nut
•\
16 53
(5.4,
39)
Crankcase/ Crankshaft:
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/Alternator:
Flywheel bolt
1
10 59
(6.0,
43)
Starter clutch
mounting screw
3
-
6
9
(0.9,
6.5)
Note
2,
5
Stator
mounting screw
5 6
(0,6,
4.3)
Stator wire
clamp screw
1
'
5
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