VPA 7743722 English 10-2004
43
Operation
Special Boating Situations
The following section covers scenarios that are considered special boating situations. When using the boat in the
following situations, there are some special procedures to take into consideration in order to keep the engine,
transmission, drive, and propeller in top working condition.
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Shallow Water Operation
You may tilt the drive unit (6°-29°) to reduce the draft
for shallow water
A
running as long as you do not ex-
ceed 1000 RPM. Exceeding 1000 RPM is not neces-
sary. It will only increase the boat wake and will not
increase boat speed appreciably.
CAUTION!
Exceeding 1000 RPM with the drive
unit tilted could damage drive train components.
This type of damage is not covered by warranty.
Never attempt to plane the boat or exceed 1000
rpm with the drive unit in a partially tilted position.
Always return to the trim range as soon as possi-
ble to avoid damage to drive train.
Never RUN
the engine with the drive unit tilted more than 30°
or the drive will be damaged.
When operating in shallow water, be sure the water in-
takes located in the lower gear unit are submerged at
all times. Proceed at slow speed and lower drive unit
immediately when deeper water is reached.
CAUTION!
Be very careful when operating in
shallow water; the intakes may pick up mud,
sand, underwater vegetation, or other sub-
merged debris. This may lead to overheating and
engine damage.
High Altitude Operation
Volvo Penta EFI engines have programmed altitude
compensation; however, there may be a slight per-
formance loss at altitudes above 5000 feet due to low-
er air density. If you are boating above 5000 feet for a
short time, a lower pitch propeller will restore some of
the lost performance. Long term use above altitudes
of 5000 ft. may require a change in gear ratio which is
not covered under the Volvo Penta Limited Warranty.
Volvo Penta carbureted engines may require mechan-
ical modifications. See your Volvo Penta dealer for
more information.
Operating in Freezing Temperatures
When freezing temperatures are forecast and the boat
will be operated and left in the water, the drive unit
must remain in the tilted down (submerged) position at
all times to prevent water in the drive unit from freez-
ing. Upon completion of engine operation, drain the
engine as described in the maintenance section of this
manual.
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