Honda CB160 Shop Manual page 108

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104 5. ELECTRICAL PARTS
STAR L R SPRING CAP
,~,,~tiff~
fig. 5. 81 farts of starting clutch
,
fig. 5. 82 (Al Principle of starting clutch operation
fjg_.
5. 83
{BJ
Principle of starting clutch operation
No.
Part name Q'ty No.
Part name Q'ty
1
Srarting chain
I
9 Woodruff key
I
2
Slorling sprocket
1
10
Right crankshaft 1
3
Rollers
.3
ti
20 mm bushing l
◄
Clutch center
I
12 20305 oH seal
l
5
Slotting clutch roller
3
13 326275 oa seal l
spring cap
6
Starting clutch roller spring
3
14
Z bearing
l
7
A.C. dynamo rotor
l
15
Right crank~hoft bearing
housing
l
6
Pon head screw
3
Fig. 5. 84 Principle of starting clutch operation
1. When the starting· motor rotates:
a. When the starting chain is drawn iri the direction
of the arrow (dotted line}.
b. When the sprocket rotates and the roller moves
to the starting• sprocket, the narrow section of the
outer clutch is engaged .and the outer clutch rotates.
Tberefore, the generator rotor, coupled with the
outer as a unit, rotates.
c. As the rotor is fixed to the crankshaft by a
4
mm
(.16" /.04"1 key, rotation of the outer clutch is
transmitted to the crankshaft.
d.
The starting dutch roller spring is employed
for
smooth operation of the roller and to insure correct
engagement. For additional smoothness of the roller
spring and roller, a spring cap is employed.
2. When the engine starts:
a. .Rotation of the crankshaft exceeds that of the
sprocket.
b. By centrifugal force and friction, the roller
depresses the spring and moves to the wide section
of the outer clutch ; transmission of the starting
motor is disconnected.
3. Lubrication
In lubrication of the overrun clutch, oil applied at
the position shown in Fig. 5. 7 5 (A) passes the three
grooves shown in Fig. 5. 7 4 [BJ and is applied to
the interior of the oil seal, which prevents seizure.
Therefore, lubricating positions, (Al and [BJ must be
cleaned by employing compressed air upon disassembly.
(Refer to Figs. 5. 82 and 5. 83)
4.
Caution required during maintenance
Life
of the starting clutch depends on operation of
the roller. Hence, the starting clutch should be
handled with care.
When a new coupling is installed :
a. Special grease for the roller (Part number: 719111
silicon grease) should be applied. The designated
grease provides features such as high cold and heat
resistance l-40°C to 200°C) and small deviation
of the friction coefficient (at the applied metallic
surface} due to temperature, etc. Clean all parts
with gasoline and apply a thin coat of lubricant
to the roller.
In reassembly, this application is not necessary.