D47U pony motor clutch

If the pony is trying to turn the main, the pony clutch pinion has to be engaged. Maybe someone engaged the pinion when the tractor was parked. There is an inspection cover on the clutch top cover which you can remove to get a look at the pinion. If it is engaged, you can disengage it with a pair of channel locks by squeezing the dogs on the end of the pinion.

Thank you for the information, Mike. I'll try your suggestion.

We removed the engaging yoke and made sure the clutch assembly could move back and forth freely, after some effort as it was dry in there. Are there clutch plates stuck together?

Yes your cluchs should be stuck together just refill with oil and play
with the lever you need a snap for angaging and try to adjusted

Yes on the ATF.

I would think it's just the thing for one that's been run dry and gummed up with old oil.

Thank you Gents I will fill with ATF. I can start by towing with a skidder I have. Would running it around for a few hours help to distribute the ATF and free things up?

If the pinion is truly engaged, then when you tow it to start, the engine flywheel should turn with enough revolutions to disengage the pinion. So "running it for a few hours" will not help.

If your pony motor is engaged, it will not disengage until the main engine spins with sufficient rpm to disengage it or until you manually disengage it. The pinion is engaged by pulling up on the right stick (pinion control) located on the side of your bell housing. The left stick operates your clutch. If someone pulled up on the right stick when the tractor was parked (not running) they could have engaged the pinion. Once the pinion snaps in, your clutch lever will not release it. Look for a 2+ inch round cover on your main engine clutch cover just behind the pony motor clutch. If you remove the 2 inch cover, you can access the pinion and release it by squeezing two dogs (latches) on the end of the pinion sleeve. Don't mess with the adjustment screws in the latches. The hardest part about the whole process is removing and replacing the sheet metal covering the main clutch cover.