I was looking for an adjustment knob like our JDs have, but I wasn't able to locate anything. Unfortunately, we don't have a manual for it so I'm shooting in the dark. This is for a friend of mine and he just asked me if I had any ideas.
Extra info on the loader, it looks like it's hooked directly into the tractor hydraulic system (not plugged into remote connections). The lines coming off the tractor go into the wobble stick control that directly drives the valves on the lines. I'm thinking that the only way to increse the speed is to change the orifice size in the connection to the system or speed up the entire hydraulic system on the tractor. Even though this is connected this way, I still expected to find a seperate adjustment for 3pt speed.