As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ENGINE QUIT AT 300 FT DURING TAKEOFF. ACFT RETURNED TO AIRPORT SAFELY. ENGINE INTERMITTENTLY ROUGH DURING RUN UP AFTER LANDING, TAXI TO RAMP DID FULL POWER RUN UP RAN SMOOTH AND DID MAGNETO CHECK EVERYTHING OK. RAN FOR TEN MINUTES NO ISSUES. SUSPECT CARBURETOR NEEDLE VALVE OR FLOAT STUCK CLOSED. R & R WITH FACTORY O/H UNIT. OPS CHECK OK, TEST FLIGHT OK, RETURNED TO SERVICE.