1991 Johnson Evinrude 9.9 Thru 30 HP Models Service Manual P/N 507946, Page 136Get this manual
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OMC Special Tools Required
20 thru 30 Models
Upper Main Bearing Seal Remover PIN 387780 Upper Main Bearing Seal Installer PIN 321539 Box Wrench PIN 322700 Crankcase Head Seal Instal