2003+ Mercury Mariner 225 HP EFI 4-Stroke Service Manual, Page 337Get this manual

2003+ Mercury Mariner 225 HP EFI 4-Stroke Service Manual, Page 337

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CYLINDER HEAD

CAUTION
Do NOT over cut the valve seatBe sure to turn the cutter evenly downward at pressure of 40-50 (9-11 lbs to prevent chatter marks3 Use 30 cutter to adjust the c