1990 Johnson Evinrude "ES" 60 thru 70 Service Manual, P/N 507873, Page 290Get this manual
r-;:;l 52Remove and discard the seals from the trim pistonsCarefully clean the trim pistons and rods and install new sealsr:;;l 53Using OMC Trim Sleeve Remover PI 325065, pry the trim sleeves from the manifoldWhen removing, rock the sleeve back and forth with your fingers while prying with the tool
175 54Inspect
the cylinder bore of each of the sleeves for scoringReplace the sleeves if scuffed or grooved
55 Remove the seals from both trim sleeves Clean the
sleevesOil and install new seals on the sleeves, as shown
COA2488
56 Remove the manifold from the holding fixture and clean the
manifold thoroughly in fresh solventBlow excess solvent from the internal passages with compressed airIt is essential that the manifold and all components be kept absolutely clean and dust freeAny dirt in the system could cause scoring of cylinder bores, sticking of valves, or damage to pump componentsAssembly