Gear that drives tynes,brass gear ,on shaft,searsroto spader, roto spader,#785293050,brass gear on shaft that turns tynes 3

Try finding it at www.searspartsdirect.com

Go to sears .com for correct diagram. Hope this helps, please post solved on fixya.com. So I get credit for a solved problem. Good luck

Try SearsPartsDirect.com

Check with SearsPartsDirect.com they can help

Best guess is that the gear for 3rd speed is seized together with it's brass bushing and the center, large transmission shaft. I don't recall which gear is for 3rd, but the transmission has two gears (2nd and 3rd speed) which have brass bushings in them. The brass bushing should spin freely on the center shaft (when in final position - sometimes they pull off the shaft tough, but spin freely when in final position, my opinion is that this is OK), and the gear should spin freely of the brass bushing.
My guess is that the 3rd speed gear, being seized to the center shaft, cannot freely idle on the center shaft, which would result in being stuck in 3rd gear.

Check with Ebay or Amazon or try Craigslist in your area

The only manual i could find is for a different model number: http://www.wheelhorse.org/manuals/Sears%20Rotospader%20917-251880.pdf . On page 8 it shows the belt adjustment. I hope this helps!

Loosen the two planetary nuts, should be a thin nut and an acorn nut. With these loose make sure the large nut on top of the transmission is tight. Push the planetary all the way up on the shaft and turn the thin nut up until snug. Back the thin nut off 1/4 turn. Hold the thin nut in position and lock the acorn nut against it. The planetary must have a very small amount of up and down play.

go to sears website you can find any diagram u want once u put in the model number

no there are no adjustments . you must have bent the case just a little , i dont see any good news for you , sorry . i have worked on hobart mixers for years and you should get 5-10 years out of that gear