My wheel horse- needs a little fix

So i have an old wheelhorse.. cant remember what year it is but i want to work on it. its missinf a master link and it needs a new gearbox/clutch sytem... how do i fix them.. the master link i think i can do but the other one i dont know how to how to fix.. any ideas/ help??

Any pics?

For starters, whet's wrong with the gearbox? Perhaps you can tear it down and find the problem. If you can identify it, you could also shop for a replacement. Peerless units tend to have the ID tag hiding behind the brake caliper. Have a look around.

Idk if my pic uploaded cause I'm udon my iPod.. I don't mknow much about it it's originally my brothers but he doesn't use it anymore.. monkey said he ripped the clutch or the gearbox or something like that... So ya

Well... time for a little diagnosis. Lets start with the basics. What does it do (or not do, as the case may be)? Have a look underneath. Is the belt in good shape? Does the tensioner pulley move, and then return when you push, and then release the clutch? How about when you put it into gear and let off the clutch... Does it move? Any funkadelic noises?

ill have a look asap...