Idle Speed Adjustment
- Connect tachometer. Warm engine to normal operating temperature. Adjust low idle speed with idle speed screw. Check maximum engine speed and adjust if necessary with maximum speed screw. See Fig 1 .
- Stop engine and disconnect link rod at lever on injection pump. Adjust throttle cable by turning cable sheath nut. Cable should be tight but not move pulley. Depress accelerator pedal and ensure that pulley touches full speed stop.
- On automatic transmission models, depress accelerator to floor. Kickdown cable should move 2.05" (52 mm) between end positions. In idle position, cable should be stretched and clearance between clip and cable sheath should be 0.01- 0.04" (.25-1.0 mm).
- Connect link rod to injection pump lever. Turn pulley to maximum throttle position and adjust length of link (by rotating) until lever touches maximum speed screw.
- Return pulley to idle position and move link rod ball joint in lever slot until lever touches idle adjusting screw. Recheck adjustments and repeat if necessary until idle speed and throttle positions are correct.NOTE: A clearance of 0.012" (.3 mm) is permissible between pulley and stop.IDLE SPEED SPECIFICATION
Application Idle RPM Maximum RPM All Models 750-850 5100-5300