Free Running Test

FREE RUNNING TEST

1. Place the starter motor in a vise equipped with soft jaws and connect a fully-charged 12-volt battery to starter motor as follows:
2. Connect a test ammeter (100-ampere scale) and carbon pile rheostat as shown.
3. Connect a voltmeter (15-volt scale) across starter motor.
4. Rotate carbon pile to the off position.
5. Connect the battery cable from battery's negative post to the starter motor body.
6. Adjust until battery voltage shown on the voltmeter reads 11 volts




7. Confirm that the maximum amperage is within the specifications and that the starter motor turns smoothly and freely:

Current: Max. 90 Amps
Speed: Min. 2,800 rpm

MAGNETIC SWITCH RETURN TEST
1. Disconnect field coil wire from the M-terminal of the magnetic switch.
2. Connect a 12 V battery between M-terminal and the body.

NOTE: This test must be performed quickly (in less than 10 seconds) to prevent the coil from burning.




3. Pull pinion out and release. If pinion returns quickly to its original position, everything is in order. If it doesn't, replace the magnetic switch.