In this schematic the "Screw-washer,4x14" is used most often.
Of all the components used in this assembly the Piston Comp,vacuu is the most expensive.
A sample from the products for the Carburetor (component Parts) include: Tube,3.5x60, O-ring,1.3x4.3, Gasket Set, Screw-washer,5x16.