Mercury 250 Specifications download pdf (Page 104)

OUTBOARD INSTALLATION

Electrical, Hoses, Control Cables, and Front Clamp

REMOTE WIRING HARNESS

Route the remote 14 pin boat harness through the front clamp

opening in the bottom cowl. Connect remote harness to the 14 pin

connector on the engine harness.

11035

a - 14 pin connector b - Remote 14 pin boat

harness

BATTERY INFORMATION

WARNING

Failure to properly secure the battery leads can result in a loss

of power to the Digital Throttle and Shift (DTS) system, leading

to serious injury or death due to loss of boat control. Secure the

battery leads to the battery posts with hex nuts to avoid loose

connections.

• Do not use deep‑cycle batteries. Engines must use a marine

starting battery with 1000 MCA, 800 CCA, or 180 Ah.

• When connecting engine battery, hex nuts must be used to

secure battery leads to battery posts. Torque nuts to

specification.

Description Nm lb. in. lb. ft.

Hex nuts 13.5 120

IMPORTANT: Battery cable size and length is critical. Refer to

engine installation manual for size requirements.

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Mercury 250 Specifications Page 104