BOAT FEATURES AND OPTIONS
SECTION
9
© 2003-2018 Ken Cook Co.
9 - 8
l Bass
PROPELLERS
The following basic information may not apply to all
engines. See the Engine Operator’s Manual for
information on propellers for the boat. Consult the boat
dealer for assistance when replacing or servicing
propellers.
The propeller converts the engine’s power into the thrust
needed to propel the boat. Care and selection of the
propeller is very important for proper boat operation.
Propeller size is usually identified by two numbers, such
as 13 x 19, and a material identification, such as
aluminum or stainless steel. In the number sequence, the
first number is the diameter of the propeller in inches and
the second is the pitch in inches.
Pitch is the angle of the blades
expressed in the theoretical
distance a propeller travels in each
revolution. In the previous
example, the pitch is 19, which
means that each revolution of the
propeller pushes the boat 19
inches (483 mm) through the
water.
Propellers on boats powered by
outboard or sterndrive propulsion
systems are usually replaced out
of the water to prevent loss of
parts and to ensure correct installation. Although propeller replacement can be
completed with the boat in the water, it is not recommended. Remove an inboard-
powered boat from the water for propeller replacement because the propeller is not
accessible while the boat is in the water. Special tools are required for most
applications. Always consult the boat dealer for assistance when replacing or
servicing propellers.
KC-0150-A
PITCH
(ONE REVOLUTION)
To Next Page
Loading...