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Old 05-02-2013, 10:00 PM   #1
EZ300 OP
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Notchy shifting

Oil jet was clear, but I still have big time drag in gear.
I'm thinking about picking up a new clutch slave. Any way to check the slave and diagnose the problem?
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Old 05-02-2013, 11:27 PM   #2
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Could be: oil jet is too big and you have too much oil.

The clutch basket is worn out and there are grooves on the fingers.

You have air in the clutch hydrolics, which you can feel, and it's not moving the rod enough.

Or, the wave washer on the inner steel plate as worn a groove and it's not popping the clutch pack out. Swap that steel plate with any other one.

Or, the steel plates are in backwards and the sharp edges are catching on the basket fingers. Pull and orient the plates with the rounded edges outward.

Or, all the steel plates are warped from excessive abuse. Pull and check on a plate glass.

That's all I can think of.
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Old 05-02-2013, 11:44 PM   #3
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I would add...

Or the central nut holding both panniers could be loose...
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Old 05-03-2013, 07:36 AM   #4
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Quote:
Originally Posted by Zuber View Post
Could be: oil jet is too big and you have too much oil.

The clutch basket is worn out and there are grooves on the fingers.

You have air in the clutch hydrolics, which you can feel, and it's not moving the rod enough.

Or, the wave washer on the inner steel plate as worn a groove and it's not popping the clutch pack out. Swap that steel plate with any other one.

Or, the steel plates are in backwards and the sharp edges are catching on the basket fingers. Pull and orient the plates with the rounded edges outward.

Or, all the steel plates are warped from excessive abuse. Pull and check on a plate glass.

That's all I can think of.
Thanks,... I'll dig into it this weekend.
It's been happening intermittently but now it's pretty severe. Clutch is stock.
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Old 05-03-2013, 07:36 AM   #5
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Quote:
Originally Posted by gefr View Post
The central nut holding both panniers is loose...
no kidding...
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Old 05-03-2013, 02:01 PM   #6
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Quote:
Originally Posted by Zuber View Post
Could be: oil jet is too big and you have too much oil.

The clutch basket is worn out and there are grooves on the fingers.

You have air in the clutch hydrolics, which you can feel, and it's not moving the rod enough.

Or, the wave washer on the inner steel plate as worn a groove and it's not popping the clutch pack out. Swap that steel plate with any other one.

Or, the steel plates are in backwards and the sharp edges are catching on the basket fingers. Pull and orient the plates with the rounded edges outward.

Or, all the steel plates are warped from excessive abuse. Pull and check on a plate glass.

That's all I can think of.
Thanks from me too. 75% of the time mine shifts butter smooth but when I try to short shift either up or down below 3000 rpm it gets notchy. Taking this to the garage...
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Old 05-04-2013, 10:18 AM   #7
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I dug into everything and it all looks good.
-Friction disks are nice and steel drive plates are smooth and show no signs of excessive heat.
-Clutch slave is working and seems fine.
-My clutch basket does have some slight grooving, and I mean very, very slight. More like it has polished the fingers of the basket where the friction disks contact the basket. No notches.



Little video of my clutch booster...
Is it supposed to be this loose?




http://youtu.be/UvYXOsAUbqQ
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Old 05-04-2013, 10:23 AM   #8
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Mine was. May not be right but mine did the same thing.
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Old 05-04-2013, 11:07 AM   #9
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Here's a look at the booster itself...



http://youtu.be/itzYf_ki6Y8
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Old 05-04-2013, 03:10 PM   #10
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Quote:
Originally Posted by Zuber View Post
Or, the steel plates are in backwards and the sharp edges are catching on the basket fingers. Pull and orient the plates with the rounded edges outward.
The manual also talks about the plates being stamped and having sharp and rounded edges. For the life of me I couldn't find a rounded edge anywhere. There are, however, stamped letters and numbers on the prongs of the fiber plates. I have these all pointed out on mine. Should I flip these?
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Old 05-04-2013, 03:45 PM   #11
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Lots of good advice, I am sure, but your description is pretty vague "drag in gear", so it does not release? Or slips?
Clutches are pretty simple, so if you provide the details..... :)
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Old 05-04-2013, 03:48 PM   #12
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Just watched your youtube video.... Wiggling stuff... ;)

What is the plate thickness? In spec?

I bet it is your clutch springs... just a guess. But it depends what your actual problem is - what is clutch drag! :)
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Old 05-04-2013, 03:58 PM   #13
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Quote:
Originally Posted by bigkuri View Post
Just watched your youtube video.... Wiggling stuff... ;)

What is the plate thickness? In spec?

I bet it is your clutch springs... just a guess. But it depends what your actual problem is - what is clutch drag! :)

Guess it would be more accurate to say the the clutch is not fully disengaging when the clutch lever is pulled. Mostly in 1st gear. Come to a stop at a light in first gear with the clutch pulled in all the way and the bike still creeps forward. On top of that my shifting from neutral to first gear is like hitting two hammers together. Hard to find neutral when coming to a stop.
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Old 05-04-2013, 08:43 PM   #14
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I would try to flush and replace the clutch fluid with 5w suspension fluid. If that does not solve the dragging clutch issue, I would consider lapping the steel clutch plates. This will do two things, one is to de-glaze them, the other would be to determine if they are flat. I usually glue a sheet of 220 wet/dry paper to a sheet of glass as a lapping plate, solvent or paint thinner works well as a lapping fluid. You can also very lightly lap the fiber plates as well. wash plates completely and soak in oil before reassembly.

If all this does not solve it, then a replacement slave may be the solution. Oberon makes some nice stuff.
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Old 05-05-2013, 02:22 AM   #15
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I had the same problem with mine, i changed the clutch push rod as the old one was battered and worn on the clutch slave side. I also swapped place for the two innermost clutch steel plates. My clutch now is much better

http://advrider.com/forums/showthread.php?t=877715

990s screwed with this post 05-05-2013 at 02:31 AM
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