1994 Johnson/Evinrude "ER" 60 thru 70 outboards Service Manual, Page 300Get this manual
Component Description t=J 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 positionIal Manual Release ValveThis device allows manual tilting movement of the engineWhen this screw is loosened, the engine will not move in the trim rangef41Tilt CylinderThis hydraulic cylinder moves the engine the tilt range onlyIt also absorbs the shock of hitting an underwater objectCheck ValveThis valve provides one-way oil passage the oil pump to the underside of the tilt position while trimming out and tilting upFilter ValveThis valve supplies oil to the top side of the tilt cylinder as it retracts when coming off shallow water drive modeThe valve also filters the oilTrim Check Valve CDThis valve, along with the trimtilt separation valve, isolates the trim cylinders from the rest of the system when the engine is not being trimmed or tiltedIt allows oil to flow from the pump to the underside of the trim cylinders during trim-out operationIt also allows oil flow to return to the pump and reservoir during trim-intilt-down operationSeparation Valve Q)This valve seals the underside of the trim cylinders from the underside of the tilt cylinder under forward thrust loadsReverse Lock Check ValveThis valve allows oil to flow the pump to the top sides of the tilt and trim cylinders during trim-intilt-down operationIt also allows oil flow to return to the pump during trim-outltilt-up operationIt also acts to prevent the engine from tilting up during reverse thrust loadsIalTrim-up Relief ValveThis valve controls maximum oil