1995 Johnson/Evinrude Outboards 50 thru 70 3-cylinder Service Manual, Page 64Get this manual

1995 Johnson/Evinrude Outboards 50 thru 70 3-cylinder Service Manual, Page 64

Testing Purpose The following procedure is designed to help you isolate defective component in the boat or engine fuel system
push ng won't separate hose and fitting, carefully cut the hose along its side and peel it back to avoid damaging the fittings
2Install OMCVacuum Gauge, PIN 390954orequivalent, and in(20,3 cm) of clear vinyl hose at the fuel inlet fitting on the lower
engine coverSecure all connections with tie straps to eliminate air leakage INote Do 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 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 bubbles