Agree with R laruse
I would try a piece of hose straight through without the filter to eliminate this first. There is a difference filter to filter. if the filter has a check valve in it may require a fuel pump to flow, and gravity may not be enough to open it. Won't really cost you anything to try. if that's the problem investigate a free flowing ( gravity fed) filter
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__________________
Gary
1974 1650 50A "budscub" Was my fathers
1969 125 42"
1978 1450 44A dual hydraulics
1984 782 50C dual hydraulics, waiting for vanguard
Z-force Cub cadet Zero turn
Sears '66 Suburban 10 Sears '66 Suburban 12
2 Breaking plows, 2 disc's, front blade, rear blade, Sickle bar mower, 2 decks 3pt harrow
74 "Green 100 "John" 
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