It's really hard to get the fluid into the system neatly, but after many tries on other Cubs, I finally did it on this one.
The problem is caused by the location of the filler and the inability to see how the fill is progressing. I'm sure there must be hi tech solutions such as pumps. etc., but because of my cheap nature I don't have such equipment. I used an empty reducer can and a little work to create a solution that others may find useful.
As any who who have been there can testify, the first indication that it's full is fluid escaping, and that can cause a real mess... especially on a freshly painted tractor. After cycling the system it's necessary to repeat the process.
So here's how it went. A piece of paper taped to the block just below the filler plug diverted the overflow to the drain pan placed on the floor below.
I was tired of messing with funnels that don't really fit the awkward location of the filler, and don't have a dedicated pump to use, so I improvised.
The improvised tool was free, except for a little work. It's a reducer can with a shop made fitting soldered to it to adapt a piece of tubing. In use it can be manipulated to control the flow of fluid already transferred from the original container by paying attention to gravity and venting the cap. I found it helpful to use one of my shop gurneys to hold the tool while it is draining. That nasty overflow that has in the past made for a lot of cleanup was avoided.
I'm happy to say the freshly rebuilt unit seems to work just fine.
beats youth's rush right in an GIT-R-DONE! 
to have BOTH lift systems installed on him! 
