1993 Johnson Evinrude "ET" 60 thru 70 Service Manual, P/N 508284, Page 338Get this manual
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113l9When servicing either cylinder, mount the bottom part of
the cylinder in soft-jaw viseIf equipped, remove the band nut and slide the band off the cylindersary
1 14110Inspect the band nut O-ringReplace the O-ring if neces115111Using either OMC Tilt Cylinder End Cap Remover, PIN 326485, or OMC Universal Spanner Wrench, PIN 912084, and breaker bar, remove the tilt cylinder end capOnce the threads are completely disengaged, slide the tilt cylinder rod and piston out of the cylinderf16l12The Prestoite piston and rod assembly is shown at the top of the figureThe Showa piston and rod assembly is shown at the bottom of the figuref17113Inspect the bore of the tilt cylinder for excessive scoringReplace the tilt cylinder if excessive scoring is present14Service the Showa piston and rod assembly as follows: Using OMC Hydraulic Cylinder Rod Holder, PIN 983213, clamp the rod tightly in viseRemove the nut and washer from the piston end of the rodthe four valve assemblies which consist of springplungerand check ball Three of the four springs are one length, and the fourth spring is another lengthOn reassembly, these springs can be put in any positionInspect the outer O-ring from the piston and the O-ring that was around the rodReplace the O-rings if necessaryReassemble the piston by placing one ball, one plunger, and one spring in each of the four holes in the pistonPlace the outside O-ring on the piston10-62