Wallpaper

Hey guys, I've recently moved my vinyl cutter to my room from my basement in hopes of using it more frequently but it seems that I might have a bad motor? I'm not sure but thats my guess because when I turn it on the rollers start spazzing out in one direction and do not stop unless I turn it off. Please help! I just want to get this fixed and cutting vinyl asap!

How easily is this replaced and how would I get the parts needed?