1989 Johnson Evinrude "CE" 9.9 thru 30 Service Repair Manual, P/N 507754, Page 101Get this manual
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Service Specifications
OMC Ultra Lock OMC Ultra Lock OMC Nut Lock OMC Nut Lock
18-21 45-50 100-105
OMC Gasket Sealing Compound OMC Gasket Sealing Compound