Massey 390 Three Point Controls?

[BCMac]

Hey folks, a buddy just picked up an MF390 and there were a few things we couldn't figure out.

When sitting in the seat, the PTO clutch is on your left. On your right are your standard hydraulic controls.

Additionally on the right, between the seat and the hydros, there are two more. One seems to move the 3pt hitch minimally. The other doesn't visiually seem to do anything. It's more of a pull knob type function and appears linked below to the 3pt. Any old pros out there know what these two knobs actually control?

Sorry, I'm not over there now so I have no pictures at the moment.

 

[SIMassey]

looking at agcopartsbooks.com, it apears that it is a divirter valve to switch hydraulic flow from the three point controls to the auxiliary rear remotes. Just a guess from your descriptions.