1991 Johnson Evinrude EI 60 Loop V Models 150, 175 outboards Service Manual, Page 272Get this manual

1991 Johnson Evinrude EI 60 Loop V Models 150, 175 outboards Service Manual, Page 272

Impact Relief 1When the engine hits an underwater obstruction, extreme pressure develops at the top of the tilt pistonThe tilt cylinder rod must extend to dissipate the extreme pressure and to allow the gearcase to clear the obstruction2Under extreme pressure, the impact relief valves piston as the cylinder rod extends

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