Tilt-Trim Motor Tips: Reversable Tilt-Trim Motors
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REVERSABLE TILT-TRIM MOTORS
TECH TIPS
Today’s tilt-trim motors use wire wound or permanent magnet fields.
BEFORE YOU CAN ACCURATELY TEST THE MOTOR YOU MUST KNOW WHAT TYPE IT IS.
Wire wound field motors will normally have three wires and will usually have four screws placed around the perimeter of the motor
case. If the motor has only two wires; it is usually a permanent magnet field motor. However, some older Mercury Marine wire
wound field motors have only two wires and use an external ground that is attached to the motor housing. Since wire wound field
motors have a higher current draw, solenoids are used to relay battery current to the motor. Permanent magnet field motors draw
much less current and miniature relays are used to relay the battery current.
REMEMBER - BLUE SKY (UP) WIRE TO POSITIVE MAKES THE MOTOR RUN IN THE UP DIRECTION
GREEN GRASS (DOWN) WIRE TO POSITIVE MAKES THE MOTOR RUN IN THE DOWN DIRECTION
Permanent Magnet Field Motor
Connecting the blue lead to battery positive and the green
lead to battery negative will make the motor run in the up
direction. This will raise the outdrive or outboard motor.
Connecting the green lead to battery positive and the blue
lead to battery negative will make the motor run in the down
direction. This will lower the outdrive or outboard motor.
Wire Wound Field Motor
Connecting the blue lead to battery positive and the black lead
to battery negative will make the motor run in the up direction
and will raise the outdrive or outboard motor.
Connecting the green wire to battery
positive and the black wire to battery
negative will make the motor run in
the down direction. This will lower
the outdrive or outboard motor.