Yanmar YM155d Service Manual page 149

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2.
ELECTRICAL SYSTEM
-
I
I
Shoes heavily worn.
I
Replace.
I
Remedy
Check starting switch.
Correct or replace.
Measure specific gravity and recharge.
Correct or replace.
Correct or replace.
Check switch; also check height at which
switch is attached.
Check the trouble and replace.
Tighten.
Adjust.
Replace.
.
Correct or replace.
Correct or replace.
Correct or replace.
Correct ore replace.
Correct or replace.
Check meshing of armature shaft splines
and spline tube.
3.
BRAKE SYSTEM
Probable cause
1. Faulty starting switch.
2.
Breaks or poor contact in'the wiring.
3.
Insufficient battery power.
4. Faulty magnetic switch:
Break i n coil windings.
Plunger catches.
5 . Faulty safety start switch.
6.
Burnt out fuse.
1. Cable connecting battery with
terminal B i s loose.
2. Insufficient pinion gap.
3. Worn brushes.
.
4. Damaged commutator.
5.
Faulty armature.
6.
Faulty magnetic switch contacts.
1. Faulty starter motor clutch.
1. Faulty starter motor clutch.
1. Faulty magnetic switch:
Worn or damaged return spring.
1. Damage to spline section.
2. Magnetic switch:
Poor returning of plunger, or
worn or damaged return spring.
1.
2
3.
4.
5 .
6.
Trouble
Starter motor does
not Nrn.
Pinion moves out
butdoes not Nrn.
Motor starts turning
before pinion moves
o u t
Starter motor turns
after pinion moves
out but does not
transmit power.
Motor does not stop
Nrning after engine
starts up leven when
starting switch
i s
turned back)
Pinion does not
move back after
engine starts up.
Remedy
Check for oil leakage.
2
Probable cause
1. Brake shoes:
Oil adherence.
Trouble
1.
Braking force differs
for left and right
side; wheels lock.
Brakes do
not
work.
2. Rod.
1 . Different amount of play for left
and right side.
Adjust amount o f play and effective strokes.
Readjust
-

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