Hydrostatic ridin mower 917270821 will not move. motor runs .

theres two things that you can check on your cub that could cause this to happen
(1) ck to see that the towing bypass valve relief ,located in back low down below seat is not tripped , even a little , these levers are a bit tricky and might get bumped especially if you use a bagger (BTW) allways use the tow relief valve when moving a non running hydrostat tractor , or you'll end up with a non functional one fast
(2) visually ck to see that a belt has not come loose or broken , this can be seen ,with engine off and looking in thru under the front bumper ,down center of tractor .with a good flashlight
if its not these two then your gonna have to get a bit more technical in your troubleshooting

check for oil level in the drive. There may be a problem in the drive pump or drive motors/ gearbox. If this is a mower with a hydrostatic drive then it may be the hydrostatic drive as they do fail on a regular basis.

put it in neutral......

i had exmark hydros i was told to never wash them, the water does more damage than good. have you checked or changed your hydostatic oil and filter latley? if you have, when doing that you have to be very careful not to get any foriegn objects in the oil resevoir, dirt, grass clipings, anything will ruin the hydro pump.

If this is a hydrostatic drive. Check oil level in transmission. If you have been running it low on oil, it may be too late for the hydrostatic drive unit. If it has a drain plug, drain it and change the oil.

Sounds like the belt going to the hydrostate broke. Or a key on one of the pulleys broke. The belt runs inside of the frame and is hard to see.

IT MAY NEED SOME FLUID IN IT I COULD LOOK AT IT IF YOU WERE IN MY TOWN IM IN TULSA LET ME KNOW I WILL HELP

Does it have gears or a hydrostatic (automatic) transmission?

If it's a gear model, sounds like a loose drive belt.

If it's hydrostatic, it could be a belt problem or a problem inside the transmission. If it's a tranmission problem, this is not good. Many of the transmissions on riding lawn mowers are not serviceable - they are just replaced.

Hi
Check to see if any oil leaks between rear wheels where the tractor was parked. Also make sure hydrostatic disengage lever, at rear of tractor by hitch, has to be pushed in.

Is the parking brake on? Or if it's a hydrostatic (automatic) there is a release lever to push the unit around when it isn't running. Most of those releases are on the back of the machine, and you just push it in for drive and pull it out to push.

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