Battery Cable Connections; Fuel Tanks; Control Cable Installation; Throttle Cable Installation - Mercury 25 EFI Service Manual

Outboard Installation
Description
Bolt

Battery Cable Connections

IMPORTANT: To prevent damage to the engine charging system when the battery cables are not connected to a battery,
ensure the battery cable ends are thoroughly insulated.
Single Outboard
b
(-)
Dual Outboards
Connect a common ground cable (wire size same as engine battery cables) between negative (–) terminals on starting
batteries.
b
c

Fuel Tanks

Portable Fuel Tank
Select a suitable location in the boat within the engine fuel line length limitations and secure the tank in place.
Permanent Fuel Tank
Permanent fuel tanks should be installed in accordance with industry and federal safety standards, which include
recommendations applicable to grounding, anti‑siphon protection, ventilation, etc.

Control Cable Installation

Throttle Cable Installation

Install cables into the remote control following the instructions provided with the remote control.
1. Move the remote control handle from neutral into forward and advance the handle to full speed position.
NOTE: The throttle cable is the second cable to move when moving the control box out of neutral.
Page 1D-16
a
(+)
c
15496
b
a
(-)
(-)
© 2016 Mercury Marine
a - Red sleeve ‑ positive (+)
b - Black sleeve ‑ negative (–)
c - Cranking battery
a
a -
b -
c -
d -
d
d
15497
Nm lb. in.
6 53
Red sleeve ‑ positive (+)
Black sleeve ‑ negative (–)
Ground cable
Cranking battery
90-8M0105568 eng MARCH 2016
lb. ft.