Very high quality pulley for your 2-stroke maxi scooter. Should be replaced immediately if the working surface is chipped, as this can seriously affect the life of the V-belt! This new version no longer has the old chrome coating that chipped off over time. Installation instructions: insert the original washers correctly! Always pull the V-belt into the rear of the torque converter before tightening the crankshaft nut, otherwise you will only tighten the pulley against the V-belt and the pulley will not be pressed correctly by the variator to the cylinder liner. The internal gearing, which is only used for centering, will otherwise rotate and can even damage the crankshaft.