Hi, this is my first post but I have been reading them for a long time now. I have an FX26D and was wondering if many parts would possibly interchange with an FX24D. Also what service manual would be the closest for this tractor. Lastly, there is a small knob directly under the seat, I'm not sure what it does, I believe it has something to do with the hydraulics, any help would be appreciated. Sorry for this long post. /forums/images/graemlins/cool.gif Rusty