4-7
430 Sports Coupe
Basic Systems Operation
SELECTING A PROPELLER - V-DRIVES
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 propeller rotation is consistent with engine
and gear box rotation. Your yacht is designed with counter-rotating
inboards for minimum torque effects.
Third
, ensure that the installation provides adequate safety features
such as a straight key, a propeller nut, a jam nut and a cotter pin.
SELECTING A PROPELLER - 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.
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 propeller and/or excessive
stresses on the power train, leading to power train
failure. Cruisers Yachts recommends that you consult
with, and employ the skills of, your Cruisers Yachts
Dealer when contemplating a propeller change.
WARNING
Dual engine installations normally include a standard
rotation engine and a counter-rotation engine. If you
remove the propellers, make sure the propeller is
correct for the rotation of the engine before operating
the yacht. Always follow the instructions in the drive
system owner’s manual in the Skipper’s Kit when
removing, replacing and selecting a propeller.
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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