2003+ Mercury Mariner 225 HP EFI 4-Stroke Service Manual, Page 107Get this manual

2003+ Mercury Mariner 225 HP EFI 4-Stroke Service Manual, Page 107

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IGNITION
CAUTION
Failure to comply with the following items may result in damage to the ignition system1DO NOT reverse battery cable connectionsThe battery negative cable is () ground2DO N