Adjusting Choke Unloader

Fully open primary throttle valve. Measure clearance between top of choke plate and air horn. See Fig 2 . If clearance is not .110-.143" (2.80-3.62 mm), bend tab as necessary.

Fig 1: Adjusting Fast Idle Cam (Choke Opening Angle)

Courtesy of MAZDA MOTORS CORP.

Fig 2: Adjusting Choke Unloader

Courtesy of MAZDA MOTORS CORP.