1996 Johnson/Evinrude Outboards 25, 35 3-Cylinder Service Manual, Page 64Get this manual
Electric Primer System Servicing Function Test
1Start engine and allow it to reach normal operating temperatureSet engine speed at 2000 RPM
3Remove primer hose from any primer fitting that you suspect is cloggedConnect 18 inI.Dclear vinyl hose between the fitting and syringe filled with isopropyl alcohol4Press lightly on the syringe plunger