Join Date: Jan 2018
Location: Athens/Atlanta Georgia area
I had this problem once with my Rebel. It was accompanied by requiring a lot of extra effort to actually shift. It turned out it happened because I accidentally overfilled the oil when trying to top it off (my bike burns a tiny amount of oil and occasionally needs topping off before the oil change interval). It wasn't doing it before I topped it off.
I fixed it by simply draining all of the oil and refilling with a more precise amount.
I thought that it could have been the oil because my other bike, the KZ750 I wrecked last year, had the same feeling of being hard to shift, and just on a lark, I figured maybe something was wrong with the oil, so I changed the filter and the oil and it worked fine after that.
Also, I've noticed that if I come to a stop and the bike won't shift into neutral, rolling sometimes doesn't help. What I do is, while the engine is running, I let the clutch lever out ever so slightly... not much, not even enough to get it to the friction point, just a little bit, and it'll shift into neutral.
2001 Honda Rebel
1982 Kawasaki KZ750-LTD (no longer running after an accident)
1988 Kawsaki Police 1000