Mercury Optimax 75, 90, 115, DFI starting year 2004 service manual., Page 336Get this manual

Mercury Optimax 75, 90, 115, DFI starting year 2004 service manual., Page 336

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POWERHEAD

6 Chatter Marks: Chatter marks are the result of combination of low speedlow loadcold water temperature operation, aggravated by inadequate lubrication andor improper fuelUnder