I have a 1973 Troybilt rotor tiller TH 1001-1. My wheels won't move. There is no reverse.The tines go around. I took the cover to the gear box off and it looks like there is a pin or something that is missing to slide the gears back and forth to engage the main drive gear. An explanation or photo would be appreciated. Tom from NY.
The tines pull the tiller as you hold back. This is the way it supposed to be. 1973 model, It is not self propelled.
Check any grub screws
SOURCE: Tiller goes For./Rev. but wont drive forward with tines engaged
check the sher bolt on the tine to drive shaft. ill need model and ser number off the unit before i can go further with helping you thy changed them around a lot
SOURCE: Yardman Rear Tine Tiller tines won't turn. Belt
The problem lies in the shift lever in the gearbox. A poor initial design that was upgraded twice. The shift fork arms have spread enough for pins to come out of the groove they run in when the tiller is shifted to the last position. (Bending back into position would only be a temporary fix as would not be any stronger.) To replace shift lever, the gearbox cover has to be opened. Seperating the cover can be somewhat challenging. When prying cover apart try to not damage the cover gasket. Gearbox grease is very thick, so gasket's real purpose is to keep water and contaminants out. Leave all gearing and chains in place. The shift lever part number is 618-0245B. Or use assembly kit number 753-0869 (contains shift lever 618-0245B, position indicator, and roll pin.) Part will run in the $56-$68 range and can be found through MTD as well as Cub Cadet. Also can get through Sears PartsDirect.
SOURCE: Where is the model number on my troybilt rear tine tiller?
If it's as old as mine (circa 1976), it's stamped on the casting right below the T-handle that allows the handle bars to pivot (also the gear case fill cap)
SOURCE: mtd rear tine garden tiller . The wheeles will
Could be the shifter inside the gearbox or it could be a stripped gear or broken chain. The bad news is you will have to remove the gearbox from the engine and then open the gearbox to see what is going on. This is quite time consuming but taking to a shop for this is very expensive due to the labor involved. You can do it yourself if you pay attention to how you take it apart. I hope this helps you out.
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Sorry, my bad. I was thinking of a different model. Cancel my answer. You can go to the Web search for partstree and type your model for parts listing for the gear box, may be a sheared pin.
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