90 mountain clutch problems

[duckman86]

I was wondering if anyone knew what would cause the clutch to be stuck(when i pull on the lever the clutch doesn't move). When i put it in gear however i can pull on the clutch, but it only half works.. i have to hold the bike with the brake. I was curious to see if anyone had insight on this. Also if anyone knew how the gears were up or down.

[Jeff Bar]

Had almost the same problem with my 175, old oil in the trans, got the plates sticky. Clutch would drag forever.


To fix it. I took it apart, cleaned the clutch plates with hot water with Dawn. flushed trans and installed Klotz bottom end motorcycle oil.

Works great now

Jeff Bar

[duckman86]

sweet thanks! I just bought all new gears and a clutch for mine, hopefully the new(er) clutch lubed up will work.
If not i might go insane...

[duckman86]

Well the clutch never fixed it with extensive cleaning and tinkering. Now the clutch seems to work fine when you pull the lever. However it won't disengage so I can shift. Like it should but it won't. And all the gears work. Which leads me to believe it is inside the case and something wasn't put back right.

[duckman86]

Well I figured I'd randomly update my post. I was missing a special shaft collar on the shaft the clutch sits on. The collar must have only been on iron cylinder 90 mountains or something because on the sport ones I have it was all part of the shaft. Everything seems slightly different between every bike I take apart and look at. I rode the bike around all last summer with no issues this time. I can't believe the 90 cc motor can take it to 60 mph with the gears I have.