Honda BF5A Owner's Manual page 24

To avoid damaging the motor, use the utmost care when mooring a boat,
especially when its motor is tilted up. Don't allow the motor to strike
against the pier or other boats.
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To avoid damaging the motor, never use it as a handle for lifting or
moving the boat.
Trailering
When trailering or transporting the boat with the motor attached, it is
recommended that the motor remain in normal running position with the
steering friction bolt tightened securely.
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Do not trailer or transport the boat with the motor in the tilted position.
The boat or motor could be severely damaged if the motor drops.
The motor should be trailered in the normal running position. If there is
insufficient road clearance in this position, then trailer the motor in the
tilted position using a motor support device such as a transom saver bar,
or remove the motor from the boat.
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