Monterey Boats 268 SC Sport Cruiser, Owner'S Manual

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●
Watch the tachometer to keep the engines within the full throttle
operating range. See the engine operator’s manual for the prop-
er tachometer reading at full throttle.
Performance operation on smooth water is very stable, but quick
reactions and adjustments are needed to maintain control. Know
your limits and stay within them. Always keep one hand on the steer-
ing wheel and the other on the throttles; constant adjustments are
necessary for rapidly changing conditions. Depending on the speed,
keep watch well ahead so that you may have enough time to react.
PROPELLERS
The propeller converts the engine’s power into the thrust needed to
propel the boat. Care and selection of your propeller is very impor-
tant to proper boat operation. Propellers are identified by two num-
bers, such as 13 x 19, and a material identification, such as alu-
minum or stainless steel. In the number sequence, the first number is
the diameter of the propeller and the second is the pitch.
Pitch is the angle of the blades expressed in the theoretical distance
a propeller travels in each revolution. In the above example, the pitch
is 19, or each revolution of the propeller pushes the boat 19 inches
through the water. A 19” pitch is considered “higher” pitched and a
15” propeller is considered “lower” pitched.
Keep these guidelines in mind when selecting a propeller:
● There are many different propeller designs for specific operating
characteristics, including the number of blades, relief holes, cup-
ping, etc. Do not attempt to change propellers until after you
have a chance to determine your average load and individual
requirements. Your dealer is best qualified to help you select a
propeller.
●
Engine RPM must be within the recommended operating range.
Refer to the engine operator’s manual.
● Higher propeller pitch reduces: RPM, acceleration, engine noise,
and usually improves fuel economy and top speed.
●
Lower propeller pitch increases: RPM, acceleration, engine
noise, reduces fuel economy and top speed.
Before installing or removing the propeller:
●
Put the remote control in the “NEUTRAL” position.
● Put the main switch in the “OFF” position and
remove
the key.
Failure to observe this warning could result in severe
injury.
! WARNING !
6
RUNNING
6-6
DIAMETER
KC-1580
KC-1581
PITCH
(ONE REVOLUTION)