i will try my best. you will need a 2.0 hex wrench. 1. remove the large rubber plug from the trans housing. 2. Look into the hole and rotate the spur gear until you access the hole in the aluminuim drum is visible. 3.hold the spur gear and use your finger to trun the primary gear shaft which extends from the trans housing. trun it clockwise.you will see two set of screws pass by as you trun the primary gear counterclockwise. the first set screw holds the gear in place dont loosen that one. the second one is the 2 speed screw that the one you want. 4. trun the set screw trun the screw clockwise to raise the shift poit ( takes longer to kick in ) trun counterclockwise to lower the shift point to an earlier shift. Dont loosen or tighten it too much you may pull the screw all the way out and have to take the tranny apart to reapair. i Have mine set to hit second gear right away and still have wheeelies like crazy. Good luck