Operating With Power Trim - Volvo Penta 22 Series Instruction Book

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Power Trim while running
The SX propulsion system is equipped with a Power Trim hydraulic trim
system which makes it possible to adjust the angle of (trim) the drive in
relation to the stern of the boat. This adjusts the boat's trim to obtain
maximum comfort and fuel economy in different load, speed, wind and
sea conditions.
Power Trim settings and adjustment are controlled from the helm
position using the controls and instruments described in the Power Trim
chapter..
Trimming the drive away from the stern of the boat raises the bow in
relation to the horizontal, while moving it towards the stern will lower the
bows.
The current trim position of the drive is shown on the trim instrument.
There are three ranges: "Trim range" (1), "Beach range" (2) and "Lift
range" (3). The "lift range" (3) must never be used when operating.
WARNING! Extreme trimming of the drive system can have
severely adverse effects on the steering of the boat.
"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 effected
in different ways by the load, wind, etc. only general advice is given
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.
WARNING! Take care to observe the instruments when trimming
the drive out so that the drive does not enter the Beach range.
Extreme trimming of the drive system can have severely adverse
effects on the steering of the boat.
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).
When starting and accelerating
Trim the drive. The bow will be pressed down and the boat accelerates
faster. This gives improved running and steering characteristics at
speeds below the planing threshold.