What was found
TWO OVERHAULED STARTER WERE INSTALLED ON OVERHAULED ENGINE. BOTH STARTERS FAILED TO TURN OVER ENGINE, REINSTALLED OLD STARTER AND ENGINE STARTED AS NORMAL.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
TWO OVERHAULED STARTER WERE INSTALLED ON OVERHAULED ENGINE. BOTH STARTERS FAILED TO TURN OVER ENGINE, REINSTALLED OLD STARTER AND ENGINE STARTED AS NORMAL.