1990 Johnson Evinrude "ES" Colt/Junior thru 8 Service Manual, P/N 507870, Page 141Get this manual
Removal of Upper Crankcase SealColt, Junior thru 8 The presence of oil under the flywheel could indicate leaking upper crankcase sealThe upper crankcase seal can be replaced without disassembly of crankcaseRemove the flywheel as described in Section 3Use OMC Seal Remover, PI 391060, to remove and install the seal Use tip "A" on thru Deluxe models Use tip "B" on thru models Use tip "C" on Colt, Junior models
To remove seal, install tip into remover installer bodyThread removerinstaller body with tip into seal to engage metal case While holding remover installer body, turn pressing screw and remove seal