A Carburator. B exhaust. C cylinder. D gas reservoir. E ignition distributor. F cover plate of the crankcase. F ' upper part of the crankcase. F'' lower part of the crankcase. F''' housing distribution of organs. G OFF pedal. K Disc of the differential. M handle to control the gasification and the pre-ignition. N differential brake pedal. P silencer. Q sprockets. R reservoir and water cooling pipe. S exhaust valve. T angle for the speed change lever. U handle the speed change. V flywheel of the engine. X supports the bearings of the differential. F of the lever drive wheels. Z cross-bar of the wheel brakes. a b rod and lever of the steering device