NOTE: To prevent poor economy due to fuel leakage, all threaded parts must be installed tightly. This applies especially to brass pump plug, strainer nut, and float needle seat.
With housing upside down on flat surface, lay a new gasket on housing.
Attach throttle body with 3 attaching screws, with lock washers, tighten evenly.
Install 2 idle adjusting screws and springs. NOTE: temporary idle adjustment should be made by turning idle screws into throttle body, finger tight and back each screw out 1 turn. Final adjustment is made after the carburetor is installed on the engine.
Install fast idle cam. Be sure cam operates freely.
Install choke valve shaft and vacuum piston assembly.
Install choke valve having the letters RP facing forward.
Center valve in air horn and install new screws. Offset weight of choke valve should cause valve to fall to open position freely.
Install choke counterweight, washer and collar to choke shaft. NOTE: Tang on collar must be over tang on counterweight.
Install choke rod having offset end into hole in counterweight. Install cotter pin, and bend 180* to prevent binding.
Install felt washer into counterbore of pump yoke bore.
Holding washer in place, slide pump yoke in place from inside of housing.
Assemble the pump actuating lever onto the pump shaft, having the letters RP facing out and the 3 position holes facing air horn.
Install pump rod into prescribed hole of actuating lever, install end with cotter pin hole in throttle lever. Install cotter pin, do not spread ends of cotter pin until pump adjustment has been made.
NOTE: The OUTSIDE hole in pump lever is MINIMUM. The CENTER hole is MEDIUM and the INSIDE hole is MAXIMUM, pump stroke.
Install thermostatic cover and coil assembly iwth new gasket. Rotate cover to INDEX marks and tighten securely. Be sure to use lock lug on one screw.
NOTE: choke valve should be closed lightly in air horn at 75* fahrenheit with INDEX marks in line.
Install balance tube, being sure flat on tube is in place in air horn.