Larry, The electric pump should be left on continuously until the main tanks run dry. The only difference in the fuel system is the electric pump versus the mechanical. There is still an overflow return line from the header to one or both of the main tanks (depending on your coupe). You should have a pressure switch located on the downstream side of the electric pump that turns a big red light on when it loses pressure and the pump is on. This indicates that the mains are empty or your pump failed, now you can turn the pump off. When the header tank gauge falls to what seems to be empty, it is about 1/2 tank. When I turn my eclectic pump off the gauge falls about 1/2" fairly quickly. Then slowly works its way down. I think the electric pump is keeping the fuel level a little above the overflow, then when it is off the fuel level falls quickly as some is being returned to the mains. Keep the dirty side down, Dan N93805
--- On Sun, 7/26/09, hogowner82 <[email protected]> wrote: From: hogowner82 <[email protected]> Subject: [ercoupe-tech] HEADER TANK FUEL GAUGE To: [email protected] Date: Sunday, July 26, 2009, 7:05 AM I have just purchased a 415-D with the O-200 conversion. In draining the header tank I noticed that the sight gauge indicator dropped out of sight long before the tank ran dry. Also, one trip around the pattern with the electric pump off resulted in an indicator half way down the glass tube. I realize that in a Coupe with an engine driven fuel pump the pump keeps the tank fuel. With the O-200, the electric pump is turned on to fill the tank and turned off when it's full. My question is what does the header tank level indicator represent? Does it's level indicate the amount of fuel in the tank-as would seem reasonable. Maybe someone with the conversion could give me some guidance. Thanks. Larry Dixon N99493
