Originally Posted by FuzzyWuzzyBear
While replacing the 11t front sprocket that came with my bike to a 12t that was also included, I got as far as removing VEN-0265, the little screw that secures the sprocket on the driveshaft. However, the front sprocket is still stuck on there real good. It can wiggle maybe a couple degrees and moves forward and backward about a millimeter but won't budge off the driveshaft. I've tried WD-40, levering, all sorts of stuff. Any ideas?
Get a deep-well socket thats just big enough to be the same diameter of the collar on the sproket and place it with the shaft on the open end of the socket. Then tap it out lightly. If you have a small vise use it also. if all else fails, use a lighter and heat up the sprocket being its brass it should heat up quickly and tap out smoothly. Just dont bend the shaft.