I am trying to ID a Troy Bilt tiller and am kinda stuck. It looks to me to be a Pony, but all the info on MTD's archives for Troy Bilt machines for 1976-1982 show the Pony with 2 different controls for the tines. My tiller has only one control for the tines, they are either engaged or disengaged. There is not another handle or even a place for one by the engage lever. Could this be an earlier machine? Or just a different model? I checked the serial number, the serial number on this machine is 29134. There is no prefix as most of the info shows the serial number having. It has a 5 horse Briggs which appears to be original. The engine was painted white by the factory, with the type of carb that is mounted on top of the tank, no bowl or such. What I have read states that this was an engine available on the Pony. Any input would be greatly appreciated.