1991 Johnson Evinrude EI 60 Loop V Models 150, 175 outboards Service Manual, Page 52Get this manual
Testing Fuel System Purpose The following procedure is designed to help you isolate defective component in the boat or engine fuel systemThe problem might cause loss of engine performance or, if left unrepaired, might cause serious powerhead damageAfter you have isolated the component, refer to Servicing, this Section, for specific repair proceduresTesting Procedure
i pellers, twist and remove all spark plug leads
"" To avoid accidental starting of engine while changing pro-
INotel Some checks require that the engine be run at full throttle under loadInstall the correct test propeller and run the engine in suitable test tank1Start engine and allow it to reach normal operating temperature2Install OMC Vacuum Gauge PIN 390954 or 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