I have a 1976 Kawasaki KZ400. I have done lot of work to the bike. I fixed every thing tht was wrong and rode my bike for over 100 the first day it was plated.
The next day, I went out and got on it, started fine, put it in first gear, but it felt like it had no power. It was in first, but rpms had to be very very high to get it going. Once I got down the road and picked up enough speed I was fine. The problem persisted into the next day. The day after that, there is nothing. I can but the bike into first gear, I can feel if enguage, but when I give it throttle, RPMs go up, but the bike does not move. I can fully release the clutch level as well and the bike does not stall. When I rode the bike the day before it went out, the only issues I was seeing was that when cruising around 55/60 the RPMs would rev up randomly. I would be steady on the throttle, but it would feel like something would slip and the RPMs would shoot up.
I described what I was experiencing to a friend of mine, and he said without hesitation, your clutch plates are slipping. Explained to me what happens when plates slip, and it made sense.
Well... I replaced my clutch plates and the problem persists. The only other information I can provide is that if the back tire is off the ground, the tire will spin, but if you push your foot against it, the tire will stop.
I am stuck here. I have taken it to two of my knowledgeable friends, and they are also stuck. I have attached a video showing me putting the bike into gear and what it sounds like.
Thanks for any help,
Blaze Watson