I have about 1000 hours on my 23 horse mini to date. I am trying to stay ahead of the game by replacing things and learning maintenance issues that may come up and have troubled other lco's. Where can i find detailed information/ dirrections for doing some of this maintenance myself w/out spending $80.00/hr. to my dealer, who has no inclination to try and save me money or time. Issues such as: 1) replacing belts 2) draining and refilling hydro system and filter 3) air gap adjustment on my pos Ogura clutch 4) how to adjust engine rpm's 5) making sure my hydro pump "dump valves" arent loose (i.e. where are they?) Are there manuals i can order other than my owners manual, which is very vague. Do i have to take classes? Any ideas/dirrections/input is greatly appreciated.