1990 Johnson Evinrude "ES" 40 thru 55, P/N 507872, Page 300Get this manual
TroubleshootingAmmeter Careful analysis of the hydraulic unit current requirements allows evaluation of the electric motor and certain mechanical componentsThe specifications contained in the chart are for static hydraulic testsDo not attempt to perform the following tests while the boat is under power1Connect 0-25 amp DC ammeter in series with the Red lead between the terminal strip and relay bracketf11 2Observe the ammeter and stopwatch while running the hydraulic unit through several complete cycles Range Range
(0015represents the engine's trim range
(1665represents the engine's tilt range