Mercury Optimax 115, 135, 150, 175, DFI year 2000 and up service manual., Page 354Get this manual

Mercury Optimax 115, 135, 150, 175, DFI year 2000 and up service manual., Page 354

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COOLING
aHubImpeller 4 Inspect the impeller blades to see if they are cracked, burnt, hard or deformedReplace the impeller if the blades are in this conditionIMPORTANT: The circular groove forme