1993 Johnson Evinrude "ET" 90 degrees CV Service Manual, P/N 508285, Page 329Get this manual
f218Install pressure gauge and adapter "A" to check problems in the UP circuitTighten gauge and adapter lightly to 5-10 inIbs(0,6-1,2 Nm)Excessive torque might damage adapter or a-ring9Cycle hydraulic unit UP and DOWN several times and check fluid level before proceedingf2110With all cylinders completely retracted, begin running the UP The gauge should show approximately 200 PSI (1379 kPa) as the cylinders are extending The gauge should show approximately 1500 PSI (10,342 kPa) as the unit stalls The stall pressure reading must not drop by more than 200 PSI (1379 kPa) after the motor stops11If your test results vary from those in Step 10, problem in the UP circuit is indicatedRefer to Page 9-44 for list of possible faultsf2112Following Steps through 9, install pressure gauge and adapter liB" to check problems in the DOWN circuit13With all cylinders completely extended, begin running the unit DOWN The gauge should show approximately 800 PSI (5516 kPa) as the cylinders are retracting The gauge should show approximately 900 PSI (6206 kPa) as the unit stalls The stall pressure reading must not drop by more than 200 PSI (1379 kPa) after the motor stops14If your test results vary from those in Step 13, problem in the DOWN circuit is indicatedRefer to Page 9-45 for list of possible faultsr:jl15After tests are complete, install the manual release valve and torque to 45-55 inIbs(5-6 Nm)Install retaining ring 10572