If you are wanting to "re-clock" the plate for a kart, it will work fine that way. The driven needs to be mounted with the hub outward...it is way wrong in the pic! There is a reverse spring that will allow its use like it is mounted in the pic, but that unit doubtful it has that and the belts won't align! ...and what randy said...flat side of the belt towards the engine and make sure pulleys are somewhat aligned!