... surface should be without watermarks, oil, dust, debris, large drum, mesh belt, rolling wheels, idler pulley, plastic pots, plastic ... wheel when machine stop, (that is to say can not change speed), Otherwise, easy to damage stepless gearbox.6. Keep waxing ... well before leaving the factory, non-professionals is strictly prohibited to change, set, disassembly and repair. YA-02BC2 Leather Machine for ...