The main fuel, two turns open on valve, goes thru the long tupe into the bowl and the reserve goes into the bowl at the bottom of the long tube down inside the screen in tank.Ok, so some of us aren't so bright...
looking at the filter in the tank on top the sediment bowl, like you all said, it's open at the top and its only there to catch stuff drifting about at the bottom of the tank and keep it form sliding down into the sediment bulb.
OK. so where does the fuel get into the sediment bowl in the first place? via the brass tube that sticks up or through the filter and down around the brass tube? Or is the former 'normal operation' and the latter 'reserve'?
help us newbies figger it out.