Motor Test; Magnetic Switch Test; Magnet Switch Continuity Test - Kubota D1503-M Workshop Manual

03-M-E3B, 03-M-DI-E3B, 03-M-E3BG WSM

Motor Test

CAUTION
• Secure the starter to prevent it from jumping up and down
while testing the motor.
1. Disconnect the battery negative cable from the battery.
2. Disconnect the battery positive cable from the battery.
3. Disconnect the leads from the starter B terminal.
4. Remove the starter from the engine.
5. Connect a jumper lead from the starter C terminal (1) to the
battery positive terminal (2).
6. Connect a jumper lead momentarily between the starter's body
and the battery negative terminal (3).
7. If the motor does not run, starter is failure.
Repair or replace the starter.
NOTE
• B terminal : It is the terminal which connects the cable from
the battery to the starter.
• C terminal : It is the terminal which connects the cable from
the motor to the magnet switch.
(1) C Terminal
(2) Positive Terminal

Magnetic Switch Test

1. Disconnect the battery negative cable from the battery.
2. Disconnect the battery positive cable from the battery.
3. Disconnect the leads from the starter B terminal.
4. Remove the starter from the engine.
5. Connect a jumper lead from the starter S terminal (1) to the
battery positive terminal (2).
6. Connect a jumper lead momentarily between the starter's body
and the battery negative terminal (3).
7. If the pinion gear does not pop out, the magnetic switch is failure.
Repair or replace the starter.
NOTE
• B terminal : It is the terminal which connects the cable from
the battery to the starter.
• S terminal : It is the terminal which connects the cable from
the starter switch to the magnet switch.
(1) S Terminal
(2) Positive Terminal

Magnet Switch Continuity Test

1. Check the continuity across the C terminal (1) and the B terminal
(2) with a circuit tester, pushing in the plunger.
2. If not continuous or if a certain value is indicated, replace the
magnet switch.
(1) C Terminal
S-38
DIESEL ENGINE
(3) Negative Terminal
W1019297
(3) Negative Terminal
0000010743E
(2) B Terminal
0000010771E
KiSC issued 07, 2008 A