Belarus 250AS: do I need to replace the clutch or adjust the linkage?

[tractorgreenie]

I had trouble starting my tractor earlier this spring and pull-started it with my truck. I've done that several times before, but this time it didn't work terribly well--guess because it was cold out.

So, after it's started, I couldn't shift gears. Got it in first just because of the rear wheels rolling so the clutch was unnecessary. Seems like my clutch linkage is adjusted as much as it can be and I still can't engage the clutch w/o gears grinding.

Did I glaze the clutch?
If so, do I have to replace it?
If not, what do I do? Just sand it a little?

Or, was the clutch going out in the first place, unrelated to pull-starting the tractor? (I know, this is a hypothetical/theoretical question...)

How much should I expect to pay for a clutch?

 

[Bison]

Have a look trough the inspection hole and see of one of the adjusting bolts in the fingers has backed out, they all need to have the same distance from the release bearing.
If that looks good You'll need to split the tractor to find out what is going on.
Could be a broke/worn finger or pin or a warped clutchplate or the clutchplate splines are dry and prevent the plate from sliding on the input shaft
Could also be a piece of clutch lining got loose and doubled up between clutch plate and pressure plate.
I have also seen the pilot bearing seizing on the input shaft.
I have seen all of the above at one time or another