1993 Johnson Evinrude "ET" 60 thru 70 Service Manual, P/N 508284, Page 324Get this manual
Routine Inspections
rv 50 Check reservoir fluid levelcapacity once per season or every 1at least operating hoursSystem is approximately 25 floz(740 mI) Unit must be in vertical position Check fluid when trim and tilt cylinders are fully extended Add OMC Power TrimlTilt and Power Steering Fluid or GM Dexron "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