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Propeller Torque
The torque of the propeller creates forces that are transmitted to the boat. This can cause the boat to lean to one
side (list).
The forces created by the counter-rotating propeller are opposite to the forces created by the standard rotating pro-
peller. When the vertical drives are trimmed equal, these opposite forces balance each other.
Propeller care
A damaged or unbalanced propeller will cause excessive vibration and a loss of boat speed. Under these conditions,
stop the engine and check the propeller for damage. If the propeller seems to be damaged, have it checked and
repaired by your local STEYR MOTORS Marine dealer. Always carry a spare propeller and replace the damaged
propeller as soon as possible.
NOTE: Never run with a damaged propeller. Running with a damaged propeller can result in damage
to drive components and engine.
Water Jet
When using water jet drives, please contact your STEYR MOTORS Marine dealer. As to information on function and
application, please refer to respective documents and documentation of the drive manufacturer.
Operating Procedure for Freezing Temperatures
When freezing temperatures are forecast and the boat will be operated and left in the water, the propeller must re-
main in the tilted down (submerged) position at all times to prevent water in the vertical drive from freezing. Upon
completion of engine operation, drain the engine as described in Off-Season Storage Preparations.
Salt Water Operation
Fresh water to flush the raw water circuit is recommended after use in salt, polluted, or brackish water to prevent
deposits from clogging and corroding the cooling passages. Contact your STEYR MOTORS Marine dealer to obtain
an Engine Flushing Kit that allows flushing of the engine when in or out of the water.
NOTE: Use in salt or brackish water may require additional anti-corrosion protection.
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