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Operation
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Propellers
Volvo Penta makes a complete line of propellers designed
to match the performance of the SX, DP, DPX, and XDP
sterndrives. For every combination of engine, sterndrive,
hull, and application there is a Volvo Penta propeller that
provides optimum performance.
Many factors influence the way a propeller performs,
including hull shape, onboard weight, engine horsepower,
power trim, and the way the boat is used. Ask your Volvo
Penta dealer to assist you in choosing a propeller that is
right for your needs.
Propeller Selection
The propellers for the Duoprop drive units have application
and diameter/pitch identification symbols: D0-D7, and
F2-F9. The single number represents the diameter/pitch.
The identification symbol and the front and rear identifica-
tion are stamped on the end of the propeller hubs. When
replacement is required, you may purchase the propellers
individually, but you must make sure they are the same
size and same shaft (e.g., F7 front and rear). Do not mix or
split sets.
“D” series aluminum propellers
Volvo Penta’s aluminum propellers are manufactured with
a special aluminum alloy that is highly resistant to the
stress and effects of salt water. The unique design of the
Duoprop, with its two counter rotating propellers, is very
important in achieving optimum performance.
Note: D5, D6, and D7 propellers are recommended for
speeds
below 40 MPH. For installations where “D”
series propellers are not recommended, “F” series
stainless steel propellers should be used.
“F” series stainless steel propellers
A stainless steel Duoprop set is a very worthwhile upgrade
from aluminum. They offer high performance through
thinner blades, powerful thrust, and virtually cavitation-free
running; and greater torsion strength for higher accelera-
tion.
“X” series composite propellers
Volvo Penta’s composite X propellers are made from
impact resistant composite material that is impervious to
galvanic corrosion effects. They offer the capability of
individual blade replacement without replacing the entire
propeller assembly. The pitch can be changed by simply
changing the blades without having to purchase the
complete propeller hub thereby reducing cost. These
propellers range from X-3 to X-8. If changing propeller
pitch, both front and rear propeller blade sets must match.
Do not mix different pitch propellers.
Caution!
X-series composite propellers are not designed to be
utilized on 5.7 liter engines. The 5.7 OSi and OSXi devel-
ops more power than these propellers are capable of
handling. Serious damage will result to the propeller
blades and possibly the drive.
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