2004 SR Johnson 4 Stroke 9.9-15HP Outboards Service Repair Manual P/N 5005655, Page 118Get this manual
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POWERHEAD INSPECTIONSERVICING
!ACAUTION !
Grind seat areas minimally onlyDo not grind than necessaryNOTE:
and assembIe the cyinder head and vave nentsFiII the intake and exhaust pots