Originally Posted by trispiritdragon
what would happen if you adjusted the linkage? And what is it for? Just curious and learning stuff.
If you try and adjust it by the linkage, it makes it so your toe moves the actual shift lever more in one direction and not enough in the other.
Which direction is too much and which is not enough depends on whether you tightened or loosed the linkage as compared to parallel.
Either way, it leads to shifting difficulty.
That linkage it there because the Rebel has forward foot controls conpared to "standard" riding position. The leverage has to be evenly distributed as it would be if the toe lever was directly attached to the shift shaft.
On "standards" that have the toe lever directly attached, you would have no option but to pull it off its splines and move up or down a spline or two.
Pulling the bolt, sliding off the rear linkage and rotating a spline or two is also a lot easier that aligning the linkage anyway. Rotating a spline or two is as easy as a ten minute job including a five minute coffee break.
Here's Cagie's excellent drawing of the linkage alignment. It show how misaligned one way or the other limits the shifter throw.