Cummins 4BT – Idle Speed Adjustment – Bosch P7100

Idle speed adjustment on the Bosch P7100 can be made by loosening the idle screw locknut (1) and turning the idle
screw (2) to achieve the desired idle speed.

Turn the screw down (clockwise viewed from top) to deยญcrease idle sped.
Turn the screw up (counterclockwise viewed from top) to increase idle speed.

After the desired idle speed is obtained, tighten the locknut.