1996 Johnson Evinrude "ED" 9.9 thru 30 2-Cylinder Service Manual, P/N 507122, Page 68Get this manual
Primer System Servicing Function Test
1Start engine and allow it to reach normal operating temperatureSet engine speed at 2000 RPM2While engine is running:
Electric start modelsPush key inEngine should run richly and drop 1000 RPM
Manual start modelsStroke primer knobEngine should run richly and drop 1000 RPM
rn 3Remove primer hose 18 inI.Dclear vinylfitting that you from any primer suspect is cloggedConnect hose between