1989 Johnson Evinrude "CE" 120/125/140/185/200/225/300 HP Service/Repair Manual P/N 507758, Page 390Get this manual
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10 Remove nut, two washers, shims (if required) and
1221 16 Install 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 f