[jeffscub]

guys, just having acquired a new to me 1450 2 days ago, i have been doing research on the relief valves. on models 1450 and 1650 S/N 590521 and below have manual unloading check valves, hince there should be a lever to release hydro pressure so you can push/pull your tractor. on models 1450 and 1650 S/N 590522 and after will have self-unloading check valves (as mine has auto valves) and no release lever. on my tractor, after i shut it off, within about a minute, maybe less!! it will release on it's own. i had parked on a slight downgrade at my dads house, got off of it and walked to the porch and my dads telling me: DAD: son, your mower is rolling. ME: huh?? DAD: YOUR MOWER IS ROLLING DOWN THE HILL ME: oh, ok! here i go trying catch it, i got it. so now i have to park on flat or put the parking break on. i'm not used to the hydros, this is my first!!! i hope this helps and also makes you laugh!!! jeff
P.S. go to the technical library-tractor on this site, go to the chassis manual on QLs. once there, type in page 56 at the top where it has ?? / 145. this starts the hydro section of your tractor.