Operating in Freezing Temperatures
The engine and drive are cooled using raw (sea) water.
Even freshwater (closed cooling) engines use raw
water for cooling purposes. When the air and water
temperatures drop low enough, any water trapped in
your engine or drive will freeze. Freezing water and ice
expand. This expansion could cause parts of the
engine and drive containing water to crack. Always be
sure to drain any trapped water from your engine and
drive if temperatures are expected to drop low enough
to cause freezing.
21199
NOTICE!
When temperatures drop below freezing,
failure to completely drain the cooling system will result
in serious damage to the engine and exhaust mani-
folds.
NOTICE!
Freeze damage to the engine package is not
covered by your Volvo Penta limited warranty.
Upon completion of engine operation, drain the engine
as described in
Draining the Engine
in the chapter enti-
tled
Engine Shutdown
.
Shallow Water Operation
You may tilt the drive unit to reduce the draft for shallow
water running
A
as long as you do not exceed 1000
RPM. Exceeding 1000 RPM at high trim/tilt is not nec-
essary. It will only increase the boat wake and will not
increase boat speed appreciably.
NOTICE!
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 possible to avoid damage to
drive train.
NOTICE!
Be very careful when operating in shallow
water; the intakes may pick up mud, sand, underwater
vegetation, or other submerged 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 lower
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.
22798
22799
Operation
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