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Primary Throttle Valve Angle

Fully open primary throttle valve. Check angle from throttle plate to bore using Angle Gauge (J-35554). If throttle valve is not at 90 degree angle from throttle valve to bore, bend throttle adjust arm to obtain correct angle. See Fig 1 .

Fig 1: Adjusting Primary Throttle Valve Angle

Courtesy of GENERAL MOTORS CORP.