Tools Required

Notice: Never operate the starter motor more than 15 seconds at a time without pausing in order to allow it to cool for at least 2 minutes. Overheating will damage the starter motor.

Important: Verify that the battery is in good condition.

Refer to Battery Check .
1. Disable the fuel system. Refer to Engine Controls.



2. Calculate the current draw.

2.1.	Select the 200 amp or the 2000 amp scale on the J 35590 .

2.2.	Zero the current clamp.

2.3.	Clamp the current clamp to the battery negative cable.

2.4.	Crank the engine and observe the meter readings. The reading should be 330-360 amps.

•	If the amperage is over 360, an internal starter failure may be the cause.

•	If the amperage is under 330, a battery cable or connection may be the cause.