2001 Polaris SLX, PRO 1200, Virage TX, Genesis, Virage TXi, Genesis i Personal Watercraft Service Manual, Page 175Get this manual

2001 Polaris SLX, PRO 1200, Virage TX, Genesis, Virage TXi, Genesis i Personal Watercraft Service Manual, Page 175

CarburetionExhaust Fuel Pump Operation The pump supplies fuel to carburetorsOn three cylinder models two fuel pumps supply
check valve to close so fuel cannot return from the carburetorSee III1III1 Piston on upstroke Inlet check valve open Outlet
check valve closed Negative (low) crankcase Diaphragm Fuel return to tank When the piston is on its downstroke, the pressure
from the crankcase becomes positive causing the diaphragm to move in the opposite direction, reversing the pressure in the
pump chamberThis causes the inlet check valve to close and the outlet valve to open, delivering pressurized fuel to the carburetor