Circuit/System Testing

Verify the battery cable connections are clean and tight.
Verify Voltage is between 12.0 - 15.0 V
- If not within the specified range Refer to Battery Inspection/Test
- If within the specified range
Test for less than the 0.5 V drop between the positive battery cable at the battery and the positive battery cable at the M64 starter motor as the ignition is placed in the CRANK/START position.
- If greater than 0.5 V
  Replace the positive battery cable.
- If less than 0.5 V
Test for less than 0.5 V drop between the negative battery cable and the M64 starter motor case as the ignition switch is placed in the CRANK/START position.
- If greater than 0.5 V
  Replace the negative battery cable.
- If less than 0.5 V
Replace the Starter.