LEMON Manuals: Even more car manuals for everyone
Home >> Mazda >> 1987 >> B2000 Base, 2D Pickup >> Repair and Diagnosis >> Engine Performance >> System >> Carburetor - MIKUNI 2-Bbl >> Overhaul >> Disassembly

Carburetor - MIKUNI 2-Bbl: Overhaul: Disassembly

  1. Disconnect water hose from throttle body and choke chamber. Grind heads off choke cover lock screws. Remove cover. Disconnect ground wire from fuel cut-off solenoid at cover assembly (if equipped).
  2. Remove throttle return and damper springs. Remove vacuum hose from depression chamber and throttle body. Remove accelerator pump rod from throttle lever.
  3. Remove actuator. Remove depression chamber rod from secondary throttle lever. Remove the depression chamber. See Fig 1 .
    Fig 1: Disassembling Mikuni Carburetor
    G62252Courtesy of CHRYSLER MOTORS.
  4. Remove 2 long float chamber cover screws. Remove throttle body. See Fig 3 . Remove 4 short screws, and float chamber cover from main body. Remove check weight and ball, and steel ball of anti-overfill device.
    Fig 2: Exploded View of Mikuni DIDEF 2-Barrel Carburetor
    G50B17203Courtesy of MAZDA MOTORS CORP.
  5. Remove "E" ring from lower end of choke unloader rod. Disconnect rod from lever. Do not remove various devices (especially the automatic choke system) from float chamber cover unless necessary.
  6. Remove float pin and float. Remove screw, retainer and needle valve. Remove accelerator pump and fuel cut-off solenoid. Do not remove throttle valves or other parts unless absolutely necessary. Do not move adjusting screws.
  7. Using a screwdriver, remove pilot jet retainer and pilot jet. Remove accelerator pump mounting screws, pump cover and link assembly, diaphragm, spring, body and gasket from main body.
  8. Remove snap ring from sub-EGR control valve pin. Remove pin and link from valve. Remove small steel ball and spring from sub-EGR control valve. Remove sub-EGR valve from throttle body.
Fig 3: Model 32-35 Cover Assembly Screws
G34474Courtesy of CHRYSLER MOTORS.