Frozen clutch plate ...

[buddy]

...to flywheel. Bike not used for way too long. Now clutch won't disengage.
Is it going to be necessary to 'tear-down' or is there a quick fix to break the two from each other?

Thnxz.

eddisc

[Bob_Roller]

There's a procedure to 'un-stick' a clutch plate .

Can't quite remember the specifics of the procedure .

I think it entails sitting on the bike, try starting it in gear with the clutch lever pulled in .

If you get the bike moving with the engine running, pull the clutch lever in and give the throttle a good twist open .

Hopefully someone will post the specifics of the procedure that knows what they're talking about .

[Red_Hen]

In my case, the bike had been sitting outside so long that the clutch was rusted to the flywheel.  We tore down the bike anyway and the transmisssion also needed an overhaul.

We bought a brand new clutch from Motobins and it really was a good idea.  The old clutch was junk.

I hope you figure this out.  If you do replace the clutch, you'll need an alignment tool to get it in the right position.

[Lucky_Lou]

Wouldnt hurt to tear it down and do the splines anyway.
Lou

[k_enn]

I had that happen once.  Got the bike into neutral and started it.  Applied both brakes fully.  Pulled in clutch lever.  Shifted down into first, with light pressure on the shift lever.  Popping into gear was enough to free up the clutch plate after sitting all winter.

Sounds like Bob's procedure would be easier on the gears, since the gears are already engaged.  Just not sure if the clutch pull - throttle twist would be enough to do the trick.  Seems you need to put some stress on the clutch plate to free it up, and if pulling the clutch lever does not free it up any, you are really relying just on the acceleration of the engine to do the trick.  I don't know if that is enough.

k_enn

[Rob Valdez 79 R65]

From Duane Ausherman's website:

N.  Your BMW motorcycle clutch is "stuck"

It is not uncommon for one to take a BMW motorcycle out of storage and to discover that the clutch is stuck.  The lever will pull in, but the clutch doesn't disengage.  This can happen in less than a year of non-use.  It happens more in humid climates.  I have removed a few stuck ones and find lots of rust and crud that sort of glues the parts together.  One can remove a clutch that is working perfectly and see the rust marks from an earlier "stuck clutch."

The solution is very simple.  Ride the bike.  You are thinking, "How do I get it into first gear?" and that is a good question.  The same as you would if your clutch cable is broken and that is on my page about cables and controls.  Basically, start the bike up and let it get warm.  Point it in a direction where there is nothing to hit.  With the engine at a low idle speed, take the bike off of the stand and get ready to ride.  Move the bike forwards by foot and gently shift it into first gear.  Now you are moving along.  Shift up as you naturally would when increasing speed.  Within a few shifts the clutch will break loose.  The rust will quickly wear off and get thrown off of the friction plate.  

http://w6rec.com/duane/bmw/clutch/index.htm

[Red_Hen]

Rob's idea sounds a lot better than doing a tear-down!

Sounds like a relatively safe first try.