Is there an easy way to rectify the situation should the shutter speed be adjusted before the shutter's cocked? I inherited one from the FiL and it seems to be stuck somewhere! TBH, I'm not sure where it is now but if I find it (and it is recoverable), I can see a few uses for it.
It would depend if anything is bent or broken.
If nothing is damaged, it should carry on working fine, I'm sure I have done it many times

I have quite a few Zenits, Zorkis and FEDs
If it is not working properly, it could well be for another reason, such as just age (they all lose their accuracy, for a variety of reasons)
My daughter had a Voigtlander jam on her yesterday, I just pushed the re-wind button to disengage the winding gears and all was fine. You don't get that on digital!
By far the most common fault is a stuck/slow second curtain, which sometimes can be corrected by re-tensioning the take up spring.
Probably the second most common major fault is you open the back and see at least one of the curtains is folded/twisted up in the camera. It is usually not broken, but come unglued. I would guess it would cost 1 1/2 hours labour to fix, not worth it when you can get another one for £20 upwards

However, it is not hard to do for someone reasonably competent and patient. The thought of taking the shutter unit apart and rebuilding it is worse than actually doing it though
The SLRs have an additional issue that helps slow the shutter, the mirror is lifted through the shutter unit.
Search for it, there is plenty of info, and guides, it is much easier now than it was 40 years ago
