1988 Johnson Evinrude "CC" 9.9 thru 30 Service Manual, P/N 507660, Page 161Get this manual
Removal of Upper Crankcase Seal9.9 thru 15 The presence of oil under the flywheel could indicate leaking upper crankcase sealThe upper crankcase seal can be replaced ithout disassembly of crankcase Remove the flywheel as described in Section 3Use OMC Seal Remover, PI 391060, to remove and install the sealremove seal, install tip "C" into remover installer bodyThread remover installer body with tip into seal to engage metal case