What was found
PILOT COMPLAINT, ENGINE RUNNING VERY RICH. DISASSEMBLED CARBURETOR, FOUND FLOAT LEVEL TOO HIGH AND TWO-PIECE VENTURI INSTALLED. TWO OF THE THREE LEG CLIPS WERE MISSING AND VENTURI WAS LOOSE. SUBMITTER STATED AD 63-22-03 IS NOT CLEAR. DOES NOT INCLUDE THESE SERIES ENGINES WHICH IT SHOULD. MARVEL-SCHEBLER BULLETIN A4-63 STATES ALL MA4-5 CARBURETORS. SUBMITTER STATED AD 63-22-03 SHOULD HAVE ALL ENGINE REFERENCES DELETED AND JUST SAY ALL MA4-5 CARBS. THIS IS A SAFETY OF FLIGHT ITEM.