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OK
Does the
crank run?
Does the
starter run?
E
LECTRIC STARTER
Check battery charged
state and battery terminal
connection or corrosion
for any abnormality.
Operation sound of
magnetic switch of starter
With starter alone, connect
the battery (+) terminal
and the M or K terminal of
the starter and check if
motor runs.
Charge or replace the battery.
Repair connection or
corrosion of battery terminals.
Key switch
Connected state
Check/repair wiring to the
starter magnetic switch.
Repair or replace starter
magnetic switch.
Check engagement of
pinion and ring gear
Check pinion roller clutch
for damage or replace.
Check settling of spring and
sliding of pinion.
Replace if pinion/ring gear
end face is worn.
Correction of pinion gap
Replace motor
(brush holder or armature).
OK
OK
OK
NG NG NG
NG
NG
NG
There is any contact
failure of starter magnetic
switch. Please replace.
OK
OK
Normal rotation?
Engine does not start
OK
NG
(Too slow)
Check battery charged
state and battery terminal
connection or corrosion
for any abnormality.
Check viscosity of engine
oil for any abnormality.
Replace the starter with a
new one and check if it
runs.
Check the engine interior.
Repair or replace the
starter.
Change the engine oil.
Check ignition system
and fuel system.
NG
NG
NG
When the starter continuously runs
(Immediately remove the (-) terminal of the battery)
Motor does not stop even
when the key switch is
turned off.
Repair or replace the key switch
or starter magnetic switch.
OK
OK
OK
OK
Charge or replace the battery.
Repair connection or
corrosion of battery terminals.
M
S
B
K
Check battery charged
state and battery terminal
connection or corrosion
for any abnormality.