Bought a 1965 1206, assume 10000 hrs, ran horrible. pump timing was off several degrees. set back to 8 btdc, ran great just putting around the shop. now, we"re sidedressing corn with it and it"s constantly trying to rev up and slow down when working it. worst on headlands when you slow down, then it really gets to lobing and lunging bad. runs great when its still cold, just acts like it wont balance itself out (fuel wise) when it"s been used for a while. checked pump timing again, still 8 btdc. is there a governor or something i can adjust to keep it from turing into a charging bull like this? has standadyne pump. maybe pump needs sent in for repairs? suggestions are appreciated.
