To get the left grip off use a small screw driver and pry it up a little and use wd-40 and spray it in and work back and forth. You can use hairspray and put it back on. If you bought the set that already has the throttle sleeve in it you just undue the screws that hold the right throttle on. " First loosen the cable lines." Carefully take the cable gromets out of the sleeve and reverse to put back together