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720 WONT MOVE


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Just bought my wife a 720 with a front end loader and a woods mower. The problem is it wont move and the three point lift won't work either. The PTO works when you turn the rear clutch on. The loader works great when the front clutch is turned on. My wife is a "Pilot" and she is anxious to use this 720 to take the horse manure out back so she can "Pilot" any help or suggestions?
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Larry, I can think of several things to check. While some of these things sound simplistic, please understand that I don't know how familiar you are with the powermax tractors. 1. If there's no power at either the hydraulcs, or the main drive, it sounds like the transmission isn't pumping any oil. Check the hydrostatic oil level. There's a pipe plug in the main gearbox cover, behind the seat. Unscrew the pipe plug and you will find that there's a dipstick that will tell you your transmission oil level. 2. With the tractor shut off, remove the steel cover between the seat and the column below the dashboard. There should be six hex/washer head screws that hold the cover in place. The cover is a bit difficult to remove, so put the gearshift lever in neutral and slide it all the way back, so you can slide the cover off to the side and rotate downward to get it out of the way. Wit the cover removed you will see two horizontal shafts. The upper shaft, (with the big donut) is the PTO drive and the donut is the electric pto clutch. Look lower, you'll see the input shaft to the hydrostatic transmission. It's a slender shaft with a flexible disc coupling in front of the transmission. Pull the plug wires (so the tractor wont start), and turn the engine over with the starter. Be VERY CAREFULL that you have no loose clothing or body parts near either of the two shafts. While turning the engine over, both of these shafts should also turn. If you push in the clutch while turning the engine over, the input shaft to the transmission should stop rotating. These are the only two things you can really check. If there's power going to the hydrostatic transmission, then it's not pumping oil like it should be. Otherwise, if the oil level is OK, then you may have a serious problem with your hydro transmission. Or possibly, your clutch belts are slipping. Remember, that the hydraulics to your front loader is a separate system, with a pump that runs off your front PTO. Your 3pt hitch is operated with hydraulics tapped from your hydrostatic transmission. Email me if you have any questions. powermax_paul
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I think it is probably your drive belts have slipped off or are broken. You can lift the hydro cooler to check the drive belts at the rear of the engine - or you can look up through from the bottom of the tractor after removing the frame tunnel plate. The other thing may be a clutch adjustment - not allowing tension on the belts. If the lower (drive) shaft doesn't turn as mentioned by Paul - check the drive belts first. If they are fine and are tight, then it is probably the hydrostat pump. Good luck. Jeff
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