Switches; Emergency Stop Switch - Mercury MR504LB3 Manual

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Section 2 - Getting to Know Your Power Package

Switches

a
Reference
Switch
a
Key switch
b
Bilge blower switch (if equipped)

Emergency Stop Switch

An emergency stop (E‑stop) switch is used to turn off the engines in an emergency situation, such as a person overboard or a
tangled propeller. When activated, an E‑stop switch interrupts the power supply to the engine and transmission. If the boat is
equipped with an E‑stop switch, the E‑stop switch turns off all of the engines.
Activation of an E‑stop switch stops the engine, or engines, immediately, but the boat can continue to coast for some distance
depending upon the velocity and degree of any turn at shutdown. While the boat is coasting, it can cause injury to anyone in the
boat's path as seriously as the boat would when under power.
Page 18
a -
b -
b
24735
Function
Has four positions.
1.
"OFF." In the "OFF" position, all electrical circuits are off and the
engine cannot be started. The engine is stopped when the key
switch is turned to the "OFF" position.
2.
"ACC." In the "ACC" position, any accessory connections to the
electrical circuits can be operated. The engine will not operate
with the key switch in the "ACC" position.
3.
"ON." In the "ON" position, all electrical circuits and instruments
are operational.
4.
"START." In the "START" position the engine can be started.
NOTE: The key can only be removed with the key switch in the "OFF"
position.
Operates the bilge blower, if equipped
35308
Typical E-stop switch
Key switch
Bilge blower switch (if equipped)
90-8M0089579
MARCH 2014
eng

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