KEEWAY FACT 50 4T Maintenance Manual page 32

Diagnosis on starter motor running weak
The electric horn does not make
sound or makes weak sound; the
steering lamp emits weak light.
Battery power shortage or bad
contact of conductor joint
Disassemble the starter motor and check:
1. whether the carbon brush is excessively
abraded;
2. whether the carbon brush spring is
ruptured or lacks elasticity;
3. whether the
commutator is stained, burnt or damaged.
4. whether the amature commutator is
excessively abraded.
Y
Repair or
replace starting
button
Starter motor running
weak
Turn the ignition switch; press the horn or turn the steering
lamp switch.
Remove the lead wires connecting to starter motor and
battery from the starter relay and press the starting
button. Check whether the resistance between the
battery terminal and the starter motor terminal is normal
with ohm meter when the starter relay makes joint
sound.
Y
surface of armature
N
Open circuit or short circuit
inside the electric starting
control system
The electric horn makes loud sound
and the steering lamp emits bright
light.
Check whether
conductor joint between starter relay
and starter motor is bad.
N
32
the contact of
Y
Inspection &
elimination
N
Contacts of starter relay
are burnt or damaged.