1998 Johnson Evinrude "EC" Accessories Service Manual, P/N 520213, Page 166Get this manual
Pump and Reservoir Servicing Function Tests]1Remove the rear plug from the side of the reservoir
2Install components from OMC Pressure Gauge Kit, PIN 984827
it If you are using flushing attachment, remove the propeller
to avoid accidental contact while testing engine3Disconnect the boat's steering system at the steering cylinder bellcrank
engine's power steering system can react quickly to mechanical input when the engine is runningBe prepared for steering cylinder movement
4With the engine running at 1000 RPM, push the spool valve bellcrank to extend the steering cylinder5Continue pushing on the spool valve when the cylinder is fully extendedThe pump relief pressure should be 850-1000 PSI (5861-6895 kPa)
6Test the system's flow rate while the boat's steering system is disconnectedWith the engine running at 700 RPM, cycle the cylinder from fully retracted to fully extended position by pushing on the spool valve bellcrankCycle time should not exceed 1.5 seconds