Electrical System Overload Protection - Mercury Mercruiser Tow Sport 5.7 MPI Manual

Neutral lock button – Prevents accidental shift and throttle engagement. Neutral lock button must be pushed in to move the
control handle out of neutral.
Throttle only button – Allows engine throttle advancement without shifting the engine. This is done by disengaging the shift
mechanism from the control handle. The throttle only button can be depressed only when the remote control handle is in the
neutral position, and should only be used to assist in starting the engine.
Lanyard stop switch – Turns the ignition off whenever the operator (when attached to the lanyard) moves far enough away
from the operator's position to activate the switch. Refer to Lanyard Stop Switch for information on the use of this switch.
Control handle – Operation of the shift and throttle are controlled by the movement of the control handle. Push the control
handle forward from neutral with a quick firm motion to the first detent for forward gear. Continue pushing forward to increase
speed. Pull the control handle back from neutral with a quick firm motion to the first detent for reverse gear and continue
pushing back to increase speed.
Control handle tension adjustment screw (not visible) – This screw is used to adjust the effort required to move the remote
control handle. Refer to instructions provided with remote control for complete adjustment instructions.

Electrical System Overload Protection

If an electrical overload occurs, a fuse will open or the circuit breaker will open. Find and correct the cause before replacing the
fuse or resetting the circuit breaker.
NOTE: In an emergency, when the engine must be operated and the cause for the high current draw cannot be located and
corrected, turn off or disconnect all accessories connected to the engine and instrumentation wiring. Reset the circuit breaker. If
the breaker remains open, the electrical overload has not been eliminated. Further checks must be made on the electrical
system. Contact your authorized dealer as soon as possible.
A circuit breaker protects the engine wiring harness and the instrumentation power lead. Push the red button to reset the circuit
breaker.
A 90‑amp fuse located on the large post of the starter solenoid, protects the engine wiring harness if an electrical overload
occurs.
90-8M0076545 NOVEMBER 2012
eng
Section 2 - Getting to Know Your Power Package
51185
mc74907-1
Page 21