Guardian Safety Feature
The outboard motor is equipped with electronic monitoring of the battery and
motor for conditions affecting safe operations. Mercury Marine refers to this
system as Guardian. In the event that the Guardian system detects conditions
of operation outside of safe parameters it will notify the operator with an audible
warning.
There are two types of audible warnings. A series of six beeps indicates a
cautionary system state or a solid six second horn to indicate a critical system
state. In the caution state, Guardian may reduce power to 65% available
power, minimally disrupting normal operation. In the critical system state, a
parameter has exceeded safe operation. In this state, Guardian may reduce
power to 5% available power. For more information refer to Audio Warning
System.
Conditions Affecting Performance
WEATHER
It is a known fact that weather conditions exert a profound effect on the power
output of outboard motors. Established power ratings refer to the power the
outboard produces at the propeller shaft. The rating does not take into account
external forces such as current or wind.
Summer conditions of ambient air temperature, direct sunlight, and high
humidity can reduce the battery and motor ability to maintain low operating
temperatures. During use, if the battery core internal temperature exceeds
60 °C (140 °F), a critical battery overheat fault will occur and the battery
will shut down. As a result, the outboard will not power up until the battery
core temperature is reduced. In elevated, but non‑critical battery overheat
events, battery core temperatures of 50 °C (122 °F) will result in a temperature
elevated non‑critical fault with audible alarm and fault indication of a battery
over temperature event. Power available for use will be restricted by the
Guardian protective feature within the outboard controller.
WEIGHT DISTRIBUTION (PASSENGERS AND GEAR) INSIDE THE
BOAT
Shifting weight to rear (stern):
• Generally increases speed and outboard RPM.
• Causes the bow to bounce in choppy water.
• Decreases forward visibility of the boat when traveling at higher speeds.
• Weight extremes can cause the boat to porpoise.
Shifting weight to front (bow):
• Improves forward visibility during higher speeds.
• Improves rough water ride.
• Weight extremes, can cause the boat to veer back and forth (bow steer).
GENERAL INFORMATION
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