1994 Johnson Evinrude "ER" 90 LV 120 thru 140, 185 thru 225, 250, 300 Service Manual P/N 500612, Page 83Get this manual

1994 Johnson Evinrude "ER" 90 LV 120 thru 140, 185 thru 225, 250, 300 Service Manual P/N 500612, Page 83

Testing Fuel System Purpose The following procedure is designed to help you isolate defective component in the boat or engine
won't separate hose and fitting, carefully cut the hose along its side and peel it back to avoid damaging the fittings rv
and inOMC Vacuumclear vinylPIN 390954the ,fuel equivalent, 2Install Gauge, or (20,3 cm) of hose at inlet fitting on the lower
engine coverSecure all connections with tie straps to eliminate air leakageDo not use fuel primer bulb, manual fuel primer
pump, or electric fuel primer pump to restart engineFuel system pressure could cause immediate damage to vacuum gauge3Start
engine and run at full throttle for at least two minutesMonitor clear vinyl hose for signs of air or vapor bubbles and note
reading on vacuum gauge4The vacuum gauge reading must not exceed inof mercury (Hg) at any timeThere should be no air or vapor