27
Power Trim while running
The Power Trim adjusts the drive angle to the stern of the boat to ob-
tain maximum comfort and fuel economy at different speeds, with
varying loads, and in a range of wind and sea conditions.
Power Trim settings and adjustment are controlled from the helm po-
sition using the controls and instruments described in the Power Trim
section.
WARNING! Avoid over-trimming the drive system as this can
adversely effect the steering of the boat severely.
The engine must not be run with the drive in the “Lift” range.
IMPORTANT! Avoid running with the drive fully trimmed for long
periods (when planing). Apart from excessive fuel consumption
this can cause cavity damage to the propeller(s).
Operating with the drive in the Trim range
The Trim range is used to achieve maximum comfort under normal
operation at all speeds from start to maximum speed.
Since every boat has its own unique characteristics and will be effect-
ed in different ways by the factors involved, only general advice is giv-
en here on how to get the best trimming angle for your boat. It can
generally be said that when the boat feels well-balanced, easy to
steer and pleasant to operate, then that is the optimal trim angle for
the boat.
When starting
Trim the drive. The bow will be pressed down and the boat acceler-
ates faster. This gives improved running and steering characteristics
at speeds below the planing threshold.
At planing speed
Trim the drive out to the operating position which provides the most
stable and comfortable running.
If the boat has twin motors the drives can be trimmed with different
angles to compensate for side winds and to a certain extent compen-
sate for uneven loading on one side of the boat or the other.
For maximum fuel economy
Operate engine at a steady throttle opening. Trim the drive out/in
slightly. The boat is most easily propelled and speed will increase in
the position that gives the highest engine speed. The throttle opening
can then be slightly reduced to retain the original speed.
In choppy seas or running against a heavy sea
Trim drive so the bows drop. This will provide more comfortable run-
ning.
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