1995 Johnson/Evinrude Outboards 40 thru 55 2-Cylinder Service Manual, Page 78Get this manual

1995 Johnson/Evinrude Outboards 40 thru 55 2-Cylinder Service Manual, Page 78

Testing Purpose The following procedure is designed to help you isolate defective component in the boat or engine fuel system
and fitting, carefully cut the hose along its side and peel it back to avoid damaging the fittingsr:;l 2Install OMC Vacuum
Gauge, PIN 390954or equivalent, LJ 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 Do not use fuel primer bulb, manual fuel primer pump, or electric
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 in of mercury (Hg) at any timeThere should be no air or vapor bubbles visible in the