Ok so out on my Sunday morning ride. Take off from a stop rpm goes up bike slowly accelerates down the road. I think to myself that's odd click into 2nd rpm continues to increase bike still moving along at a snails pace. I have no clue what's up. It's like there is no power to the rear wheel. I came to a stop took off again and it was fine. Headed home im in third hammer the trottle a bit to pass a car and the rpm increases but I'm not moving any faster. I nursed it home that way. Checked the transmission oil and it has air bubbles in it. I'm not sure if that's normal. Thoughts?
Things to check/consider:
- clutch slipping (needs adjustment), oily (leaking trans input seal), clutch worn out. Is there any oil on the shelf below the transmission?
- how is the oil level in the transmission? The level should be at the bottom of the fill plug on the side of the tranny.
- stripped input splines on the transmission
- bolts backing out on the output flange connection to the driveshaft. You can squeeze the rubber bellows behind the tranny feeling for loose bits. You can also put the bike in gear and turn the rear wheel by hand. you should feel the driveshaft turning inside the rubber bellows...if still connected, you should also feel the output flange turning too. Not too bad to undo the front clamp and peel the bellows back and take a look.
- stripped rear wheel splines. Remove the rear wheel and look at the male and female splines. When is the last time they were lubed?
Do the easy stuff...check the clutch adjustment. I've posted the "Tom Cutter" method before...search for his name or the number 201 which is the "magic" distance needed.
Also, pull back the rubber bellows and be sure all the bolts are tight and in place.
Be sure that turning the rear wheel turns the gears in the transmission.
Uh, I think it's time for a rear wheel spline lube.
If none of that fixes it, then pull the transmission and see what's going on there. It could be that the tranny input seal needs replacement or you just need a new clutch.