All Models

Open throttle valve to wide open position. Hold choke valve closed with rubber band (see Fig 4). With throttle wide open and choke closed with rubber band, measure clearance between choke valve and air horn wall. If adjustment is necessary, bend choke unloader tang. See CARBURETOR ADJUSTMENT SPECIFICATIONS TABLE  for correct specifications. See Fig 4.

Fig 1: Exploded View of Datsun 210 and 310 Hitachi DCH 306 Carburetor

Courtesy of NOT AVAILABLE

Fig 2: Exploded View of Subaru Hitachi DCP 306 Carburetor (DCJ 306 Similar)

Courtesy of NOT AVAILABLE

Fig 3: Exploded View of Mazda GLC Hitachi DCG 306 Carburetor

Courtesy of NOT AVAILABLE

Fig 4: Choke Unloader Adjustment OVERHAUL

Courtesy of NOT AVAILABLE