40
7741591 / 2003-12
Drive unit, rotation, and propellers
SX drive unit
Your boat may be equipped with a single engine or twin en-
gines. Propeller rotation is as viewed from the rear of the boat
facing forward.
Single engine installation
All single engine installations are set up for right-hand rotation
(standard rotation) and use right-hand propellers.
Twin engine installation
Your Volvo Penta drive unit can be set up to rotate in either di-
rection. The propeller, propeller shaft, and vertical drive shaft
are the only parts that counter-rotate. The engine always has
standard rotation.
Twin engine installations should have the port drive unit set up
for left-hand rotation (counter-rotation) and the starboard drive
unit set up for right-hand rotation (standard rotation).
CAUTION!
Some boat manufacturers may set up twin drive units
so that the port drive unit set up for right-hand rota-
tion (standard rotation) and the starboard drive unit
set up for left-hand rotation (counter-rotation). If you
remove the propellers and/or drive units, be very care-
ful to attach the shift linkage in the same position it
was in when you removed it, and make sure that the
propellers are not switched.
Duoprop
®
drive unit
Duoprop drive units have counter-rotating propellers; it is not
necessary to change drive unit rotation. The propellers operate
in sets:
•
The forward propeller is left-hand and rotates counterclock-
wise.
•
The rear propeller is right-hand and rotates clockwise.
Propellers are installed in sets. You may purchase the propel-
lers individually, but make sure they are the same size and
shaft (e.g., F7 front and rear). Do not mix or split sets.
Propeller rotation
Right-hand propellers rotate clockwise to propel a boat for-
ward. They are considered to be
standard rotation
propellers.
A drive unit set up for standard rotation must be equipped with
a standard rotation propeller. (Propeller rotation is as viewed
from the rear of the boat looking forward.)
Left-hand propellers rotate counterclockwise to propel a boat
forward. They are considered to be
counter-rotation
propel-
lers. A drive unit set up for counter rotation must be equipped
with a counter-rotation propeller. (Propeller rotation is as
viewed from the rear of the boat looking forward.)
Features
7741591 - Downloaded from www.volvopenta.com 12/03/2014 09:32:39
Summary of Contents for 3.0GL-B
Page 2: ...7741591 Downloaded from www volvopenta com 12 03 2014 09 32 39 ...
Page 16: ...14 7741591 2003 12 Notes 7741591 Downloaded from www volvopenta com 12 03 2014 09 32 39 ...
Page 46: ...44 7741591 2003 12 Notes 7741591 Downloaded from www volvopenta com 12 03 2014 09 32 39 ...
Page 107: ...7741591 Downloaded from www volvopenta com 12 03 2014 09 32 39 ...
Page 108: ...7741591 English 12 2003 AB Volvo Penta SE 405 08 Göteborg Sweden www volvopenta com ...
