I just purchased this tractor yesterday. Serial number M00318x317870. I'd like to know what year tractor this is so I can locate parts for it. The seal at the top of the steering column is leaking fluid. I have no idea what can or can not be replaced. Can I replace the seal or do I need to replace the whole steering column? I'm in the market for a Service Shop Manual, with parts illustrations, diagrams etc. and a Operators Manual. I'm very mechanically inclined and I like to repair everything on my own, right here in my yard. Any suggestions?