Mercury GO BOLDLY SeaPro 500hp Operation And Maintenance Manual page 50

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Active Trim will maintain the last known trim position when operating at
speeds in excess of 80 km/h (50 mph).
Operation above 80 km/h (50 mph) may require trim adjustments using
the panel mounted or control handle trim position switch.
Active Trim will gradually return the engine or drive to the down position
during deceleration.
Active Trim will only function when the engine or drive is in the normal trim
range.
GPS
Active Trim uses a GPS signal to determine vessel speed. The Active Trim
system will not automatically control trim until the GPS unit has acquired a
signal.
Resume Functionality
If the boat operator overrides the Active Trim system at planing speeds using
the trim button, or exceeds 80 km/h (50 mph), the system will stop controlling
the trim. Active Trim will resume automatically under the following conditions:
Override occurred above 80 km/h (50 mph) and the boat operator then
decelerates to below 80 km/h (50 mph).
Override occurred above 80% of the rated engine RPM and the boat
operator then decelerates to below 80% of the rated engine RPM.
Override occurred in the cruising speed range and then the boat operator
decelerates to idle. Active Trim will become active on the next
acceleration.
Shallow Water Operation
Active Trim cannot detect water depth and will not trim up automatically in
shallow water. The boat operator will need to override Active Trim by trimming
the engine or drive manually or pressing the Active Trim button.
Trailer Position
Placing the engine or drive in trailer position—over 50% of the adapted trim
range, will prevent Active Trim from engaging. Any time the engine or drive is
trimmed above its normal range—to navigate shallow water, launch the boat
from a trailer, or load the boat onto a trailer, for example—you must manually
trim down before Active Trim will function. This safety feature is meant to
prevent the engine or drive from automatically trimming down and hitting
something.
SELECTING THE CORRECT PROFILE
With so many available trim profiles, it can be difficult to determine which profile
is the correct one. In making this determination, it is important to understand
what trim is, how it affects boat operation, and how boat loading can influence
the required trim angle. Armed with a clear understanding of these concepts,
selecting the correct trim profile becomes simple.
FEATURES AND CONTROLS
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