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Old 09-06-2023, 12:48 PM   #4
Marshall V. Daut
Senior Member
 
Join Date: Apr 2011
Location: Davenport, Iowa
Posts: 2,626
Default Re: unsticking a starter

The shaft is probably slightly sprung. Take off the Bendix drive and apply a 6 volt battery current to the terminal and case as ground. The shaft should spin very fast without a trace of blurring. If the starter shaft blurs or jumps around due to imbalance, the shaft is bent and it will continue to jam against the ring gear occasionally, locking up the engine.
Marshall
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