I have been trying to find one for awhile now and still no luck! I did find another thread where someone used the 3PH flow adjuster port to supply the backhoe with fluid and then used another spot just below that for the return this was on a 1710- they would raise the 3PH lever all the way up into the notch to keep constant pressure on and then would lower it to remove pressure from the lines to remove the backhoe lines. On the 1900 i am just note sure which ports or plugs i can use and should not use on the blocks.
Can you send me pictures of where the hoses actually connect for the 758? I just bought a used one and trying to figure it out.
I have the 7108 loader also