2007 Evinrude E-Tec 75, 90 HP outboards Service Manual, Page 167Get this manual
FUEL SYSTEM FUEL COMPONENT TESTS Lift Pump Vacuum Test Confirm fuel supply to the fuel lift pumpTemporarily install vacuum gauge, T-fitting, and in(20.3 cm) of clear vinyl hose between the fuel supply hose and fuel lift pump (inlet)Secure connections with tie straps to prevent fuel or air leaksApply 15 psi (103 kPa) to the pulse hose of the pumpReplace lift pump if pump fails to hold pressure
IMPORTANT: Do not use fuel primer bulb, manual fuel primer, or electric fuel pump primer to restart outboardA positive pressure in the fuel supply could damage some vacuum gauges
1Pulse fitting
Anti-Siphon Valve Test
Remove anti-siphon valve from fuel tankInstall adapter fittings and 36 in(91.4 cm) length of clear hose to the inlet side (tank end) of valve
20 in(500 mm)