As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
PILOT REPORTED ENGINE WOULD NOT START. FOUND THAT PROP WOULD NOT TURN BACKWARDS. REPLACED STARTER ADAPTER WITH A REBUILT AND OPS CHECKED OK. THIS IS THE SECOND ADAPTER REPLACED ON THIS ENGINE. THE FIRST ONE FAILED ON A FACTORY REBUILT/ZERO TIME ENGINE WITH 402 HOURS ON IT. THE SECOND ONE,WHICH WAS A FACTORY REBUILT ADAPTER,FAILED WITH 493 HOURS ON IT.