2003+ Mercury Mariner 225 HP EFI 4-Stroke Service Manual, Page 170Get this manual
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CHARGINGSTARTING SYSTEM
aRED battery cable (M6 14 screw)BLACK battery cable (M8 20 screw) Positive Battery Terminal Screw Torque Nm (70 lb-in Negative Battery Terminal Screw Torque 18 Nm (160 lb