With the motor off the clutch is locked up and when you crank it up it disengages the outer and inter hub with the weights I guess and as you gas it it pushes the plates together an takes off and when you shift the clutch cam pushes the outer hub in or the inter in which disengages the clutch ,sorry to be detailed on how it works:doah: but i just would like to know, thanks for the info so far i have taking the clutch apart and cleaned it and replaced some of the springs but i did not look at it close enough to see how it works ,to big of a hurry to get it going, i have rebuilt the whole motor with new top end, the trans shifter forks and low gear was replaced , also the clips on the rebuild i have watch all of them and picked up a few thing when i went through the rebuild, i like the low and high gear box, i would like to fix one of my two motor to incorporate one, not sure maybe it would work looks like the same block . thanks guys :thumbsup: