1999 "EE" Outboards Accessories Service Manual, P/N 787026, Page 134Get this manual
[IJ 8Install pressure gauge and adapterA" to check problems in the UP circuit
INote Tighten gauge and adapter lightly to 5-10 in Ibs(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 proceeding
10With all cylinders completely retracted, begin running the unit UP The gauge should show approximately 200 PSI (1 379 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 5-6 for list of possible faults
12Following Steps through 9, install pressure gauge and adapter JIB" 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 stops