My lift pump went bad after 700 hrs. $350 is a little steep for a replacement. The pressure is 2-5 lbs. from lift pump. Go to the HANDY-DANDY AUTO PARTS STORE near you and get a __Airtex in line fuel pump--$50. Unscrew the old lift pump from the filter --disassemble it to get the threaded ring off--make a steel or copper blank --about 2 in. in dia.---make sure the o-ring is on top of filter assy. --screw the cap down -hook up two wires to blk and red. The 3rd wire that is black is another ground. Cut the fuel line about 3 in. from tank --place on inlet--put other end on outlet- use clamps that were provided with unit that was MADE IN U.S.A.!! You can use a short bolt to secure it to the lower panel that bolts to frame. Crank skidsteer and check for leaks. --finally, send me the $300 dolars you saved 
Mack
Mack