INSTRUMENTS AND CONTROLS CAUTION Always travel at moderate speed, in order to obtain maximum precision and maximum efficiency during work. During work, the use of the lever must be proportional to the required effort and such as to obtain con- stant engine speed. Manoeuvre the lever smoothly, without abrupt movements and avoid counterrotations as much as possi- ble, since these manoeuvres involve untimely wear of the tyres. The lever grip is provided with the horn, which must be used to warn the persons in the vicinity of the machine at the beginning of work and in case of danger. All movements are locked by shifting the safety bars to the lock position (see “3.3.5 pos. 1 SAFETY BARS”). 86