Hi, I'm a newcomer to the forum and to the world of mini tractors. I bought a B4200 yesterday and, whilst looking it over in the garden, I managed to figure out most of the controls, however I am baffled by one. There's a turn knob on top front of the transmission assy with an arrow on it which is pointing to the left. On the right of the housing is a plug. Am I correct in assuming that this is where I could tap in for a secondary hydraulic outlet should I want to run a tipping mechanism?