2003 Johnson ST 6/8 HP 4 Stroke Outboards Service Manual, PN 5005471, Page 149Get this manual

2003 Johnson ST 6/8 HP 4 Stroke Outboards Service Manual, PN 5005471, Page 149

POWERHEAD INSPECTION cations noted in the following reference drawingReam guides after installationA reputable machine shop is recommended to perform valve seat grinding Use the specifications noted in reference drawings below:

DR6209 DR6208
Exhaust

Inspect valve seats for contaminationexcessive wear, or damageThoroughly clean all carbon deposits from seatsValve seats should be concentric to within 0.002 in(0.05 mm)I

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