Warm up the engine to working temperature. At complete supply of fuel measure frequency of rotation of a cranked shaft, without exceeding this mode more than on 5 villages. At discrepancy of frequency of rotation demanded break a plastic cap of the screw 1 (see fig. 3.37
), weaken a lock-nut and this screw establish necessary frequency of rotation of a cranked shaft. Tighten a lock-nut and establish a new cap.