As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
SHORTLY AFTER START UP, THE PILOT NOTICED ONCE TAXIING, THAT AN ELECTRICAL SMOKE ODOR WAS PRESENT. THE PILOT QUICKLY SHUTDOWN THE ENGINE AND THE AIRCRAFT WAS TOWED BACK TO THE HANGAR FOR MAINTENANCE. IT WAS FOUND THAT THE STARTER WAS NOT FUNCTIONAL AND THAT AN ELECTRICAL BURNING SMELL WAS COMING FROM INSIDE THE STARTER. THE STARTER WAS REPLACED AND THE STARTING SYSTEM WAS TESTED AND FOUND TO BE FUNCTIONAL.