In Reply to: 860 Carb posted by Jack - Iowa on December 26, 2021 at 17:08:53:
The Marvel-Schebler OEM Carb Needle & Float Valve Seat consists of 3 pieces. There is the brass seat, a gasket, and the needle valve. Several years ago somebody decided to re-invent the wheel and now made it a 4-pc assembly. Why? This now had a brass seat, gasket, special needle, and a clip that hooked onto the needle valve and float. Forgot the clip? Gonna have problems. Forgot the gasket? Gonna have problems. Either part will work on your carb. I believe both now use the VITON tip on the needles. I prefer the old 3-pc design myself. Denny Carpenter & Just8Ns sell the old style. I also only buy the TISCO carb kits. For the N-Series use p/n C546V, and for the 800/900 models use p/n C547AV.
MARVEL-SCHEBLER OEM STYLE NEEDLE & FLOAT VALVE:
AFTERMARKET STYLE NEEDLE & SEAT FLOAT VALVE: