Fuel System: Carburetor: Disassembly

Remove dashpot vacuum hose. Remove accelerator pump connecting rod, spring and lever. Disconnect air vent solenoid valve lead from connector. Disconnect choke rod. Remove air horn retaining bolts.
Remove air horn and choke assembly from main body. Remove air vent solenoid valve, spring and gasket from air horn. Remove float, pin and gasket. Remove needle valve. Remove sight glass assembly from main body.
CAUTION: Note location and size of jets and air bleeds prior to removal. Components must be installed in correct location.
Remove secondary slow jet, secondary slow bleed, secondary main bleed, and secondary main jet from main body. Remove primary main bleed, slow jet and plug, primary slow bleed and primary main jet from main body. See Fig 1 , Fig 2 and Fig 3 .

Fig 1: Main Body Bleed & Jet Locations
Courtesy of MAZDA MOTORS CORP.

Fig 2: Air Horn Air Bleed & Jet Locations
Courtesy of MAZDA MOTORS CORP.

Fig 3: Exploded View of Nikki 2-Barrel Carburetor
Courtesy of MAZDA MOTORS CORP.
Remove richer air bleed, primary slow bleed, coasting richer air bleed and coasting richer jet from air horn. See Fig 2 . Remove coasting richer solenoid valve and "O" ring from main body.
Remove idle switch and spring. Remove slow fuel-cut solenoid valve, spring and gasket. Remove dashpot. Remove accelerator pump plunger and spring. Remove strainer and inlet check ball.
Remove plug and outlet check ball and spring. Disconnect throttle link. Disconnect vacuum diaphragm connecting rod. Disconnect throttle return spring.
Remove throttle body retaining bolts. One bolt is located inside throttle body. Separate throttle body from main body.
Remove vacuum diaphragm assembly. Remove diaphragm cover screws. Remove cover, spring and diaphragm. Using small punch and hammer, remove spring pin located in front of mixture adjusting screw.
Remove mixture adjusting screw. DO NOT remove throttle valve and shaft, or choke valve and shaft from housings.