FASS T 150G - Manual (Page 21)

Note: O-Ring must be put back on suction side of pump. Failure to do so can result in
priming issues, cavitation, or pressure loses.
Fuel Filter –Install FWS-3003
on side of pump with draw tube
in the middle of the filter nipple.
Water Separator Filter –Install FS-1001 on water
separator nipple without the draw tube. Make sure
to insert O-Ring provided on nipple.