Operations
Mounting height
To run your boat at optimum efficiency, the water resistance (drag) of the boat and outboard
motor must be made as little as possible. The mounting height of the outboard motor greatly
affects the water resistance. If the mounting height is too high, cavitation tends to occur, thus
reducing the propulsion; and if the propeller tips cut the air, the engine speed will rise abnormally
and cause the engine to overheat. If the mounting height is too low, the water resistance will
increase and thereby reduce engine efficiency. Mount the outboard motor so that the anticavitation
plate is between the bottom of the boat and a level 30-50mm (1.2-2 in.) below it.
NOTE:
• The optimum mounting height of the outboard motor is affected by the boat and motor
combination and the desired use. Test runs at different heights can help determine the optimum
mounting height. Consult your boat manufacturer for further information on determining the
proper mounting height.
Clamping the outboard motor
1. Place the outboard motor on the transom so that it is positioned as close to the center as
possible. Tighten the transom clamp screws evenly and securely. Occasionally check the clamp
screws for tightness during operation of the outboard motor because they could become loose
due to engine vibration.
WARNING
Loose clamp screws could allow the outboard motor to fall off or move on the transom. This could
cause loss of control and serious injury. Make sure the transom screws are tightened securely.
Occasionally check the screws for tightness during operation.
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