[SDBOB]

I finally picked up 2082 Cub Cadet from friend. I opened valve spring covers and no movement of valves. Then I opened oil fill tube,removed angle fill adapter and looked inside,cam gear isnt moving. I'm going to use my camera for closer look. If I suspect that crank gear is spinning,then what? New crank? Or back yard fix of fastening gear to crank? Oil is not dirty no noticable shiny or metal fragments.