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

are you refering to the clutch fork that connects to the other end of the clutch cable, you will have to drop the gear box as this fork sits over the clutch pressure plate ,and pushes the thrust bearing against the pressure plate tynes so disengages the drive from engine to gearbox, while you've got the box out check the condition of the clutch parts ie thrust bearing,pressure plate spring's,friction plate condition

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

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.

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.

If it is the shaft and not the belt, you will probably have to take the tynes off the axle and clean and lube them. It may also be the differential, I would check that first. Good luck...Lee

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

The drive is replacable and available from Cuisinart, you will have to sign a waver to get the part. the drive is screwed onto the motor shaft with reverse threads. the plastic drive will have to be completely broken off of the unit to expose a brass"nut" which was internal to the drive. depending upon your model you may have to remove the lower half of the base unit to access the lower part of the motor shaft. there will be a slot in the end of the shaft for a large flat blade screwdriver. this is used to hold the shaft still while turning the drive "nut" with a vice grip pliar or similar. the new drive is just threaded onto the shaft and normal operation tightens it.