Just purchased Bob cat 773, serial is 509640472, being new to this machine, I need advice on locating the parts manual and repair manual. With no extra cash at the moment, which manual, parts or repair is most valuable and where is least expensive. This is a 12 year old machine, seems like manuals on machines this age should be less expensive if not easy to locate or swap, copy. Machine sat in sellers yard for 10 years and has several leaks. I must learn to repair my self. Any advice and manual would help a great deal Thanks.