Post a pic of the rear end cover. Maybe someone changed it out with the one from a gear drive. The fluid level plugs are lower on a gear drive.
There won't be much fluid loss after running the system, and shouldn't really be any measurable amount. Less than a pint. If you started it and it lost more than that, you didn't fill it the first time. It holds 2 gallons, the pump holds less than a pint and the cylinder.... maybe 2 pints. Point is,
if you filled it full.... the level wouldn't be too low to give issues.
Post some pics of it in the raised position from the RH side.
