Jensen recirculating toilet

[sideshowbob]

Hello to all? some? one?
I have an older trailer, 1972 Great Divide which of course ceased business in 1984. It is equipped with a recirculating toilet - a Jensen dual action model 750E, which we have never used as a recirculator, only hooked direct to sewer. Jensen has also gone out of business (of course) and I dont have the manual for the toilet and nothing comes up on an exhaustive search of the web.
I need to know how much water to add for the initial charge and how long before dumping to the holding tank or what quantity - signs point to the need to empty to tank.
Thanks for any help available,
Bob

[Steven]

My parents had that type of toilet in there fifth wheel of about the same year but I don't remember much about it.  My best guess is to charge it it so that there is a couple of inches of water in the bottom of the tank.  If if doesn't seem to flush well then add more water a little at a time until you get proper flushing.

If you plan to use the trailer 'self-contained' frequently for several days at a time, you may want to consider replacing the recirculation toilet with a conventional RV toilet and holding tank system.   

Steven