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ENGINE ELECTRICAL - Starting System 16-19 5. If pinion gap is out of specification, adjust by adding or removing gaskets between magnetic switch and front bracket. MAGNETIC SWITCH PULL-IN TEST switch. 2. Connect a 12 V battery between S-terminal and M-terminal. This test must be performed quickly (in less than 10 seconds) to prevent coil from burning. 3. If pinion moves out, then pull-in coil is good. If it doesn’t, replace magnetic switch. MAGNETIC SWITCH HOLD-IN TEST 1. Disconnect field coil wire from M-terminal of magnetic switch. 2. Connect a 12 V battery between S-terminal and body. Caution This test must be performed quickly (in less than 10 seconds) to prevent coil from burning. 3. Manually pull out the pinion as far as the pinion stopper position. 4. If pinion remains out, everything is in order. If pinion moves in, hold-in circuit is open. Replace magnetic switch. FREE RUNNING TEST and connect a fully-charged 12 V battery to starter motor as follows: 2. Connect a test ammeter (100-ampere scale) and carbon pile rheostat in series with battery positive post and starter motor terminal. 3. Connect a voltmeter (15 V scale) across starter motor. 4. Rotate carbon pile to full-resistance position. 5. Connect battery cable from battery negative post to starter motor body. 6. Adjust the rheostat until the battery voltage shown by the voltmeter is 11 V Reduction. 7. Confirm that the maximum amperage is within the specifications and that the starter motor turns smoothly and freely. max. 90 A Field coil wire S M Battery B Field coil wire S Battery M S B Starter motor Ammeter Battery Voltmeter Carbon-pile rheostat A V |