What happened
The FAA’s narrative, in sentence case. The FAA writes it in capitals and removes private details.
Narrative: during engine start, the flight crew noted the generator would not pick up the load on the stbd. Engine. The crew shut down the engine intending to restart when PIC noticed N-1 RPM indication when engine rotation should have ceased. The "t" handle was pulled to shut off fuel to the engine, no effect observed. The fire warning illuminated, after which the PIC actuated the fire extinguisher system. The tower was notified and the emergency crew responded. Investigation by ground maintenance revealed the starter had overheated causing the fire warning indication. No damage to the aircraft was noted. Maintenance replaced the starter/generator and the fire bottle.
As the FAA filed it
NARRATIVE: DURING ENGINE START, THE FLIGHT CREW NOTED THE GENERATOR WOULD NOT PICK UP THE LOAD ON THE STBD. ENGINE. THE CREW SHUT DOWN THE ENGINE INTENDING TO RESTART WHEN PIC NOTICED N-1 RPM INDICATION WHEN ENGINE ROTATION SHOULD HAVE CEASED. THE "T" HANDLE WAS PULLED TO SHUT OFF FUEL TO THE ENGINE, NO EFFECT OBSERVED. THE FIRE WARNING ILLUMINATED, AFTER WHICH THE PIC ACTUATED THE FIRE EXTINGUISHER SYSTEM. THE TOWER WAS NOTIFIED AND THE EMERGENCY CREW RESPONDED. INVESTIGATION BY GROUND MAINTENANCE REVEALED THE STARTER HAD OVERHEATED CAUSING THE FIRE WARNING INDICATION. NO DAMAGE TO THE AIRCRAFT WAS NOTED. MAINTENANCE REPLACED THE STARTER/GENERATOR AND THE FIRE BOTTLE.