31ZY9T000.book
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２０１３年１０月２２日 火曜日 午前１１時２７分
OPERATION CRUISING Engine Speed For best fuel economy, limit the throttle opening to 80%. Use the throttle friction control (p.64) to help you hold a steady speed. For rough water conditions or large waves, slow down to prevent the propeller from rising out of the water. The engine is equipped with an overrev limiter to prevent the possibility of mechanical damage from excessive engine speed. If, for example, the outboard motor is tilted excessively or propeller ventilation occurs during a sharp turn, the engine may overrev, activating the overrev limiter.
If engine speed becomes unstable at high speed due to activation of the overrev limiter, reduce speed and check the trim angle of the outboard motor.
It is necessary to trim the angle of the outboard motor to compensate for changes in boat load, weight distribution, water conditions, or propeller selection.
Trim
Under normal conditions, the boat will perform best when the antiventilation plate is level with the water surface.
Use the power trim/tilt switch to trim the outboard motor for the best performance and stability. You can use the power trim/tilt switch at any time, whether the boat is underway or stopped. Press the UP or DN (down) side of the switch to adjust the angle of the outboard motor.
When cruising into a high wind, trim the outboard motor down slightly to level the boat and improve stability. With a tail wind, trim the outboard motor up slightly.
Refer to the trim meter (p.33) for an indication of whether the outboard motor is trimmed high or low.
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