As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
WHILE ATTEMPTING TO START A/C AFTER LANDING AND GETTING FUEL, PILOT REPORTED STARTER STOPPED WORKING AND MIXTURE CABLE WOULD NOT MOVE. FOUND STARTER HOUSING ATTACH BOLTS COMPLETELY SHEARED OFF AND MISSING ALLOWING STARTER TO REST ON MIXTURE CONTORL ARM AT FUEL CONTROL UNIT. SUBMITTER STATES THIS IS THE 2ND OCCURRENCE OF THIS SAME PROBLEM ON THIS SAME A/C.