Fig.3.37.The adjustment screws pump (motor CD20): 1 - the screw limits the maximum speed;2 - the screw of the damper actuator controlling the supply of fuel;3 - screw limit idling speed;
4 - Screw the maximum fuel delivery
Make sure there is no binding for the whole course of the shock absorber. Warm up the engine to operating temperature. Slowly increasing the engine speed until you get to touch the shock absorber and screw 2 (see. Fig. 3.37) occurred at 1300 min-1.
Tighten the lock nut and check the return of normal engine idling speed.