2003 ST 4 Stroke 9.9/15HP Johnson outboards Service Repair Manual P/N 5005714, Page 119Get this manual

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POWER UNIT INSPECTIONSERVICI NG Check: Valve CrackReplace

Service limit: J10 IN and J151N and

22.100 mm (0.8701 in) 23.320 mm (0.9181 in)

If lower than

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