About 6 or 7 months ago I bought a 40 year old Yanmar YM2310 that had been idle for 2 years. It had not been started or moved. For two years. This is in the PNW, about 40 miles north of Seattle. Plenty of rain and humidity. The fellow I bought it from charged the battery but I had to track down the electrical issue that prevented starting before I would buy it. I did. It started right up. But the clutch was stuck. I drove it the 4 miles or so to my house in high with the clutch pedal pressed down the whole way. Near home the stuck clutch started to slip some. After going up some long hills. The clutch had two problems. It had rusted to the flywheel and rusted to the splines on the input shaft. During the next couple of weeks or so my son and I kept stepping on the clutch pedal as we used the tractor. Because the tractor has a Power Shift transmission we were able to use the tractor without using the clutch to get moving. Anyway, after stepping on that clutch pedal countless times (we didn't keep count, so countless, but certainly lotsa times, 500, 1000?) the friction disc started moving freely on the input shaft splines. Now the clutch works just fine. So I would suggest driving around it top gear for a few miles and see what happens. Load the clutch up. Drive uphill. Step on the brakes. Pull a heavy load. Step on the clutch pedal as many times as you can stand. Then get your friend to do the same. The clutch will probably free itself up. And even though stepping on the clutch pedal 1000 times seems like a lot of effort, it was way, way less effort than splitting the tractor. Your tractor looks much newer than mine, I think you might have a worthwhile machine there, especially with the recent work done. Though the nature of the work done makes me wonder why it was done. Maybe just bad at maintaining stuff. So check everything else. If it runs well and seems to operate well you should probably change every filter and fluid.
Cheers,
Eric
