1993 Johnson Evinrude "ET" 9.9 thru 30 Service Manual, P/N 508282, Page 12Get this manual
Service Policy When servicing an outboard which is within its normal warranty period or covered by the OMCExtended Protection Plan, make repairs using only genuine OMC replacement components or partsIf OMC genuine replacement components or parts are not used, OMC might refuse subsequent warranty claims involving that engine ill parts
I:A When replacement parts are required, use genuine OMC