1992 Johnson Evinrude "EN" 90 deg. Cross V Service Manual, P/N 508145, Page 360Get this manual
Component Description Relief ValveThis valve controls maximum oil pressure in the system during trim-outltilt-upIt also bleeds oil to the reservoir when the engine is run at speeds over 1500 RPM (approximately) in the partial-tilt positionThis allows the engine to return to the maximum trim-out position
f31 Trim-up
f31 Manual Release ValveThis device allows manual tilting
movement of the engineWhen this screw is loosened, the engine will not move in the trim range
'4l Tilt CylinderThis hydraulic cylinder moves the engine
L!J through the tilt range onlyIt also absorbs the shock of hitting
an underwater object
tI from the oil pump to the underside of the tilt position while trimming out and tilting up
Isl Tilt Check ValveThis valve provides one-way oil passage
cylinder as it retracts when coming off shallow water drive modeThe valve also filters the oil