Propellers - Volvo Penta 3.0GS/SX Owner's Manual

Propellers

Your Volvo Penta sterndrive should be equipped with propeller(s) that are designed to give top performance
and maximum economy under all operation conditions. To obtain peak performance, the engine RPM AT FULL
THROTTLE must fall in the specified operating range at normal load conditions at favourable/best trim settings.
If full throttle RPM is below the recommended operating range, propeller(s) with less pitch should be used.
Should full throttle RPM exceed the recommended range, install propeller(s) of higher pitch. Selecting the cor-
rect propeller(s) to allow the engine to run at full throttle in the recommended operating range will give the best
engine life, fuel economy and performance. See your Volvo Penta dealer for help in determining the correct
propeller(s) for your application.
IMPORTANT! Engine damage can result from incorrect propeller selection. A damaged propeller must be
changed without delay. Operate with extreme caution if a propeller is damaged. Do not operate DP models
with only one propeller, this can cause damage to propeller shafts.
A=Right-hand
installation
70
Propeller selection,
SX drive
When you choose a propeller, it is important to know
whether it should be for right-hand or left-hand rota-
tion. The directions of rotation are shown in the illus-
tration. Boat yards normally use right-hand rotation,
and have set the trim fin for right-hand rotation.
For trim fin adjustment, please refer to the SX, DP-S
B=Left-hand
Drive, Trim fin, adjustment section.
installaion
Propeller check,
SX drive
After having the propellers serviced, shift into FOR-
WARD or REVERSE at idle speed and determine if
the boat moves in the direction indicated by the posi-
tion of the control handle. If the boat moves opposite
the direction indicated by control handle, the propel-
lers are switched.
IMPORTANT! In twin installations, one propeller
should be for right-hand rotation and the other
one should be for left-hand rotation. Both
should be of the same size (same diameter)
and have the same pitch.
WARNING! Failure to perform the above test
could result in loss of control.