1988 Johnson Evinrude "CC" 9.9 thru 30 Service Manual, P/N 507660, Page 93Get this manual
Primer System Servicing Functional Test 1Start engine and allow it to reach normal operating temperatureSet engine speed at 2000 RPM2While engine is runningElectl"ic start modelsPush in keyEngine should run richly and drop 1000 RPM Manual start modelsStroke primer knobEngine should run richly and drop 1000 RPM
3Remove primer hose from any primer fitting that you suspect is clogged Connect Va in1.0clear vinyl hose between the fitting and syringe filled with isopropyl alcohol4 Press lightly on the syringe If fluid moves through the fitting, it is okay If fluid does not move through the fitting, clean with OMC Cleaning Tool PI 326623 5Manual Start ModelsBe sure to check for obstructions in primer hose tee