1997 Johnson Evinrude "EU" Accessories Service Manual, P/N 507270, Page 179Get this manual
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10Remove nut, two washers, shim (if present), and a-ring11Remove the spool valve12Carefully, pry the spool valve seals off each end
13Remove and discard two spool valve housing a-rings
14Remove three a-rings from the cylinder rod bore of the housing and discard15Clean the cylinder, housing, and components in clean solventBlow dry using compressed air with less than 25 PSI12980
INote It is important to keep all components free of dust and dirt
during assemblyLightly oil all components and a-rings with CWK: Power TrimlTilt and Power Steering Fluid or GM Dexron I fluid16Install three new a-rings in the cylinder rod bore of the housingThe a-rings (0.734 0.103 in are in separate package labeled "913327"