4-5
45 Cantius
Basic Systems Operation
Propellers
The propellers installed on your yacht were selected because their
diameter and pitch provide the optimum speed and performance
under average conditions of load. Propeller selection must be based
on the ability of the engine to turn the propeller and achieve the
manufacturer’s recommended RPM at full throttle.
SELECTING A PROPELLER - VOLVO PENTA IPS
First,
ensure that the diameter and pitch provide the desired
performance. The engine RPM at full throttle should be in the upper
half of the recommended full-throttle operating range. If RPMs are
low, a propeller with a smaller pitch will increase RPMs. If RPMs are
high, a propeller with an increased pitch will lower RPMs.
Second,
ensure that the installation provides adequate safety
features and all components are used. Refer to the IPS owner’s
manual in the Skipper’s Kit for general maintenance and removal and
installation instructions.
CAUTION
Propellers can be very sharp. Be careful when you
handle them. Wear protective gloves when handling
any propeller. Remove the key from the ignition switch
and remove the emergency stop switch clip, if your
yacht is equipped with stop switches, to prevent
accidental starting of the engines. Do not use
damaged propellers. Damaged propellers can damage
your engine and boat.
NOTE
Variations from average loadings, bottom condition
and/or engine condition could call for a propeller
change to achieve the performance desired.
CAUTION
Improper propeller selection and installation could
result in loss of the propellers and/or excessive
stresses on the IPS, leading to IPS and engine failure.
Cruisers Yachts recommends that you consult with,
and employ the skills of, your Cruisers Yachts Dealer
when contemplating a propeller change.
WARNING
Engine installations include a combination of
standard rotation and counter-rotation engine
propellers. If you remove the propellers, make sure the
propellers are reinstalled correctly before operating
the yacht. Always follow the instructions in the IPS
owner’s manual in the Skipper’s Kit when removing,
replacing and selecting a propeller.
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