Joey, Thank you for responding to my problem. I have noticed a few more problems with the carb. The throttle shaft is worn and wiggles side to side and the mixture shaft is the same way.I believe that this carb has too much time on it! Somewhere I read that the carb # 84240 Cont. P/N 627366 will work on the O-200 It uses 1/2 lb. of fuel pressure and the 10-4894 uses 3-6 lbs. pressure. Hi-wing Cessna 150 has more static gravity fuel pres. from the wing tank - the Fly Baby has a low fuel pressure from the tank. Can use the C-85 carb on my O-200? "Steze" http://community.webtv.net/smlangford/StevesFlyBaby