Mercury Mariner Outboard 40/50/55/60 2-stroke Service Manual, Page 454Get this manual

Mercury Mariner Outboard 40/50/55/60 2-stroke Service Manual, Page 454

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7 Inspect impellerReplace impeller if any of the following conditions exist: Impeller blade(s) are cracked, torn, or wornImpeller is glazed or melted (caused by operation without sufficient water supp