A shifter doesn't come off unless the pinch bolt is entirely removed. I have seen many a first time bike mechanic get frustrated trying to pull off a shifter with only the pinch bolt loosened. This may be why there is damage.
Are you saying the splines are damaged and the shifter won't stay in position or is the clamp metal stretched and the pinch bolt can't tighten the shifter on the shaft??? No Matter here is the CORRECT way to fix either/both.
If the pinch bolt can't get the shifter tight enough to clamp down on the shaft, it is because the shifter metal has stretched around the shaft. The clamp ends contact before the clamp gets tight. This is a very common problem and riding around with the shifter loose will wear the splines eventually. Put the shifter in a vise. Tighten the vise until the ends of the split just touch. Hacksaw through the split of the clamp. This closes the inner diameter of the clamp enough to do it's job, if not saw again.
Sometimes the shifter shaft has been totally stripped of splines so even a new shifter won't stay in place. The correct way to pin this shaft is to position the shifter. Drill lengthwise into the crack between the shifter and shaft. Turn the drill bit around and stick the shank of the bit into the hole. Snap it off in the hole. Peen the end with a hammer. A bit of Loctite on the shank of the bit isn't a bad idea.
The reason I suggest this is the propper method of pinning the shifter to the shaft is drilling straight through, like 99% of folks do, results in a shear pin that can fail.
Tom
. now does anybody have a fix for this without having to open engine and replace the rod im runing forwards on it thats how i found this problem when i went to mount them.
