The apraiser put a value of $850 on the OC4. I can live with that. The main problem is to fix the reverse. Figger to pull the head and check for bad valve seals and such before getting into the whole engine. It ran and didn't burn that much oil so maybe it's something simple. The tracks and sprockets can go for a while if they have to, simply because they are already past the point of being able to pin and bush them. This will probably be a project for this winter. I did find the operators manual for it, so that will help. Always remember being able to do one heck of a lot of work with that OC4 for being a small crawler. Used to move some outrageously big rocks and built a lot of roads on the farm with that little tractor. Did a fair amount of plowing with a 2 bottom oliver pull-type plow when it was too wet for the 88's to get through.