Carburetor - MIKUNI 2-Bbl: Overhaul: Disassembly

NOTE: DO NOT invert carburetor during disassembly. Do not remove choke valves, choke levers and related parts, round nut from accelerator pump link, adjusting screws (except idle speed, idle mixture and dashpot), or throttle valves.

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).
Remove throttle return and damper springs. Remove vacuum hose from depression chamber and throttle body. Remove accelerator pump rod from throttle lever.
Remove dashpot/idle up actuator rod (man. trans.) or idle up actuator rod (auto. trans.) from free lever. On Pickup and Ram-50 models, remove dashpot rod from free lever. Remove actuator.
Remove the deceleration, enrichment and jet mixture solenoid valves. On all models, remove depression chamber rod from secondary throttle lever. Remove the depression chamber. See Fig 1 .

Fig 1: Exploded View of Mikuni DIDEF 2-Barrel Carburetor
Courtesy of CHRYSLER MOTORS.
Remove 2 long float chamber cover screws. Remove throttle body. Remove 4 short screws, and float chamber cover from main body. Remove check weight and ball, and steel ball of anti-overfill device.
Remove float pin and float. Remove screw, retainer and needle valve.
Remove main jets from jet blocks. 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.
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.