HITACHI 4-Barrel: Overhaul: Notes
NOTE:
Disassembly and assembly procedures will vary somewhat from vehicle to vehicle, depending upon sales area (Federal or California) and type of transmission. Therefore, some carburetors may not have all parts referred to in the following procedures.
- Remove carburetor from vehicle and begin disassembly with semi-automatic choke housing and air horn. Remove choke return delay valve (Calif, only) and choke delay valve. Remove heater lead and choke return solenoid (Federal only).
- Remove throttle opener and bracket assembly. Remove dashpot diaphragm (Man. Trans, only). Remove throttle return spring, sub-return spring and semi-automatic choke housing. From air horn, remove "E" clip, choke lever, choke return diaphragm and bracket, hot start assist lever spring, fast idle rod and bracket. Remove No. 2 choke diaphragm (Federal only).
- Remove air horn assembly from main body. Disconnect float pin, and remove float, needle valve, spring and retainer. From main body, remove accelerator pump rod, secondary throttle valve rod, idle switch return spring and idle switch (Man. Trans, only), and main body attaching screws.
- Remove secondary throttle attaching screws, cover, return spring, pin and clip, diaphragm, housing and gasket. Remove "E" clip, washer and shaft, accelerator pump lever, attaching screws, cover, diaphragm and return spring.
- From main body, remove accelerator pump injection screw, nozzle, gasket, weight, outlet check valve, check valve seat, weight and inlet check valve. Remove retainer, blind plug and washer, primary main jet and secondary main jet.
- Remove the following jets or air bleeds (Fig. 11):