Honda CB160 Shop Manual page 106

102
5. ELECTRICAL PARTS
TERMINAL INTERNAL GEAR
BRUSH SPRING PULE CORE
BALL BEARING
BRUSH
COMMUTOR
END FRAME
COMMUTA OR
ARMATURE
PLANETARY GEAR
YOKE
COVER BAND
CENTER BEARING HOLDER
Fig. 5. 74
Starting motor
II.
Starter reduction
In order to obtain the required crankshaft torque
and rotation by reduction of motor rotation, mecha-
nical reduction is made. For this, primary reduction
is performed by the planetary gear, and secondary
reduction is made by the starting chain.
Primary reduction rate
(Planetary gem) ........................ 5.78:
Secondary reduction rate
(Chain) ................................. 2.77:
Total reduction rate ..................
16.
l :
Fig.
5.
7
5
Ports of starting motor reduction mechanism
The starting motor, which is tightly covered for
waterproof qualities, is not in continuous rotation.
Hence, attention should be directed to the following
points which concern wear, every
5000 to
l
0,000 km
(31 00 to 6200 mi.I :
Fig. 5. 76 Starting motor mounted on engine
(D
Commutator and carbon brush wear.
®
Removal of dust and carbon (by applying com-
pressed air).
@
Gear case lubrication.
When the starting chain is removed, the starting
sprocket should not be removed from the motor.
If
the starting sprocket is removed, it should be disassem·
bled with the planetary gear and, prior to reassembly