Lycoming; O-320; Leaking Carburetor; ATA 7322

The mechanic describes this Cessna 172 as having leaked gasoline into the engine airbox and cowling for an unspecified period of time, but perhaps as much as 400 hours. At the inevitable point of inspection and teardown of the Marvel Schebler carburetor (model 4SPA), he found the simple omission of the float shaft cotter pin (P/N A82-11) as the offending culprit. He states: “...the log book records this carburetor to have been overhauled by Precision Airmotive and purchased from Aircraft Spruce & Specialty in June, 2004.”

Part Total Time: 400 hours.