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Home >> Saab >> 1983 >> 900 S, 2D Hatchback, Automatic >> Repair and Diagnosis >> Engine Performance >> System >> Dashpot System >> Adjustment

Dashpot System: Adjustment

  1. Warm engine to normal operating temperature and check ignition timing and idle speed. Raise engine speed to 3000 RPM and measure return time to idle.
  2. If less than 3 seconds, loosen lock nut and rotate dashpot closer to throttle stop. If more than 6 seconds, loosen lock nut and rotate dashpot away from throttle stop. Tighten lock nut and repeat test.
  3. Rotate throttle lever and check that dashpot rod strikes stop at 2400-2600 RPM for non-turbo, 2100-2300 RPM for Turbo models. If rod does not strike stop at specified RPM, readjust dashpot and repeat test.
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