Went the loop with this thing already!! I don't know what to think. spent money on the book but it ain't tellin me what I need to know. The tractor just won't move at all. I took the pressure line loose from the valve body (where the foot peddle hooks up), started it, And NOTHING came out. This tells me there is a pressure issue...I am noty getting fluid to it. The way the book reads it could be the vavle body, or the regulator valve, or the tranny pump or clogged lines ect ect. Well I had it all apart. NOTHING is clogged, nothing seemed to be stuck in the either of the bodies..and I had my finger over the end of the pump suck-in tube and it had some suction (was it enough?...I don't know). I am too far into this thing now to sell it off and quit. Can someone tell me WHAT they think is wrong with it? I got more time than I do money. I'd like to try fixing it myself. Any help would be appreciated. Thanks much.