Operation board motor when adjusting the tilt an- gle, also be careful not to pinch any body parts between the drive unit and clamp bracket. To raise the bow (trim-out), press the switch ” (up). To lower the bow (trim-in), press the switch ” (down). Make test runs with the trim set to different angles to find the position that works best for your boat and operating conditions. G Use caution when trying a trim position for the first time. Increase speed gradu- ally and watch for any signs of instabil- ity or control problems. Improper trim angle can cause loss of control.
EMU27911 Adjusting boat trim When the boat is on plane, a bow-up attitude results in less drag, greater stability and effi- ciency. This is generally when the keel line of the boat is up about 3 to 5 degrees. With the bow up, the boat may have a greater tenden- cy to steer to one side or the other. Compen- sate for this as you steer. The trim tab can also be adjusted to help offset this effect. When the bow of the boat is down, it is easier to accelerate from a standing start onto plane. G If equipped with a power trim and tilt switch located on the bottom cowling, use the switch only when the boat is at a complete stop with the engine off.
Do not adjust the trim angle with this switch while the boat is moving. Adjust the outboard motor trim angle using the power trim and tilt switch. 1. Power trim and tilt switch Bow Up Too much trim-out puts the bow of the boat too high in the water. Performance and econ- omy are decreased because the hull of the boat is pushing the water and there is more air drag. Excessive trim-out can also cause the propeller to ventilate, which reduces per- formance further, and the boat may “por- poise” (hop in the water), which could throw the operator and passengers overboard. 1 UP DN ZMU03522 1. Power trim and tilt switch 35