Yamaha 150F Owner's Manual

Also see for 150F: Owner's manual Service manual Owner's manual

Operation354. Remove the key if the boat will be leftunattended.NOTE:The engine can also be stopped by pullingthe lanyard and removing the lock plate fromthe engine stop switch, then turning the mainswitch to “ ” (off).EMU27861Trimming outboard motorThe trim angle of the outboard motor helpsdetermine the position of the bow of the boatin the water. Correct trim angle will help im-prove performance and fuel economy whilereducing strain on the engine. Correct trimangle depends upon the combination ofboat, engine, and propeller. Correct trim isalso affected by variables such as the load inthe boat, sea conditions, and running speed.WARNINGEWM00740Excessive trim for the operating condi-tions (either trim up or trim down) cancause boat instability and can makesteering the boat more difficult. This in-creases the possibility of an accident. Ifthe boat begins to feel unstable or is hardto steer, slow down and/or readjust thetrim angle.EMU27882Adjusting trim anglePower trim and tilt modelsWARNINGEWM00751 Be sure all people are clear of the out-board motor when adjusting the tilt an-gle, also be careful not to pinch anybody parts between the drive unit andclamp bracket. Use caution when trying a trim positionfor the first time. Increase speed gradu-ally and watch for any signs of instabil-ity or control problems. Improper trimangle can cause loss of control. If equipped with a power trim and tiltswitch located on the bottom cowling,use the switch only when the boat is ata complete stop with the engine off. Donot adjust the trim angle with thisZMU023011. Trim operating angleZMU034411