Willys Overland Knight Registry
Willys Six Carburetor Notes
The Willys Six carburetor evolved from the same Tillotson designs used on the Whippet Four with one notible exception; the accelerator pump.
The accelerator pump is not easy to spot on the diagram from the Willys 98B manual, but is more evident on the diagram from the C131, C157 truck manual which was an identical motor.
A more easily obtainable general purpose replacement is the Marvel Schebler which is notable for its complete lack of markings except for the words MADE IN U.S.A.
PATENTS
1,536,043
Not all Marvel Schebler carburetors have an accelerator pump so be careful to find one that has that feature.
Tillotson W-2A Carb diagram from 1930 Willys 98B manual
Tillotson J-1A / J-1B Carb diagram from 1930 Willys C131, C157 Truck manual
Updraft Marvel Schebler Carb
Last photo shows updraft Tillotson carburetor fitted to 1933 Willys 6-90A
