1997 Johnson Evinrude "EU" 90 thru 115 90 CV Service Manual, P/N 507267, Page 266Get this manual
Routine InspectionsConventional
1Check reservoir fluid level at least once per season or every 50 operating hoursSystem capacity is approximately 25 flo Unit must be in vertical position Check fluid when trim and tilt cylinders are fully extended Add CWk: Power TrimlTilt and Power Steering Fluid or GM Dexron II, as needed, to bring level up to the bottom of fill plug thread Loosely install fill plugCycle unit in ten second spurts (adding fluid as needed)A minimum of five complete cycles is required to purge air from the system2Look for indications of internal fluid leakageCorrect the cause if leaks are noted