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Mercury Boat Propellers. Evinrude Boat Steering. Make test runs with the trim set to different angles to find the position that works best for your boat and operating conditions. The outboard motor trim angle can be changed approximately 4 degrees by shifting the trim rod one hole. When the boat is on plane, a bow-up attitude results in less drag, greater stability and efficiency.
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 tendency to steer to one side or the other. Compensate for this as you steer. When the bow of the boat is down, it is easier to accelerate from a standing start onto plane. Too much trim-out puts the bow of the boat too high in water. Performance and economy are decreased because the hull of the boat is pushing the water and there is more air drag. Operating with excessive thrim-in higher speeds also makes the boat unstable.
Depending on the type of boat, the outboard motor trim angle may have little effect on the trim of the boat when operating. It the engine will be stopped for some time or if the boat is moored in shallows, the outboard motor should be tilted up to protect the propeller and lower casing from damage by collision with obstructions, and also to salt corrosion. Be sure all people are clear of the outboard motor when tilting up and down, Body parts can be crushed between the motor and the clamp bracket when the motor is trimmed or tilted.
Leaking fuel is a fire hazard. If there is a fuel joint on the outboard motor, disconnect the fuel line or close the fuel cock. If the engine will be tilted for more than a few minutes. Otherwise fuel may leak. You are commenting using your WordPress. You are commenting using your Google account.
You are commenting using your Twitter account. You are commenting using your Facebook account. Notify me of new comments via email. Notify me of new posts via email. Search for: Search. Operation The trim angle of the outboard motor helps determine the position of the bow of the boat in the water. Adjusting trim angle for Manual Tilt Models There are 4 or 5 holes provided in the clamp bracket to adjust the outboard motor trim angle.
Use care to avoid being pinched when removing or installing the rod. Use caution when trying a trim position for the first time. Increase speed gradually and watch for any signs of instability or control problems.
Improper trim angle can cause loss of control.
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