A steering wheel. B lever to actuate the wheel brakes. C Carburator. G lubricator with multiple charges for the two cylinders and the heads of the piston rods. H water circulation. J leverage the speed and motion interactions donkey. M crank drive. O on the main shaft of the pinion gear keyed to the speed-change, driven pulley, which includes the switching device. P plate for the belt tension. Q brake on the differential. R gas reservoir. S Radiatör. V water reservoir. W housing of the speed change gear transmission.