Operation64EMU40121Adjusting boat trimGenerally, a boat is stable when the keel lineof the boat is up about 3 to 5 degrees. Withthe bow up, the boat may have a greater ten-dency to steer to one side or the other. If thisoccurs, adjust the trim angle.Bow UpToo much trim-out puts the bow of the boattoo high in the water. Excessive trim-out canalso cause the propeller to ventilate, which re-duces performance further, and the boat may“porpoise” (hop in the water), which couldthrow the operator and passengers over-board.Bow DownToo much trim-in causes the boat to “plow”through the water, decreasing fuel economyand making it hard to increase speed. Resis-tance at the bow is greatly increased, height-ening the danger of “bow steering” andmaking operation difficult and dangerous.EMU44132Tilting up and downIf the engine will be stopped for some time orif the boat is moored in shallows, the outboardmotor should be tilted up to protect the propel-ler and lower casing from damage by collisionwith obstructions, and also to reduce salt cor-rosion.WARNINGEWM00222Make sure that no one is near the outboardmotor when tilting the outboard motor upor down. Otherwise, body parts could becrushed between the outboard motor andthe clamp bracket.
