Yamaha 150F Owner's Manual

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

Operation37Bow DownToo much trim-in causes the boat to “plow”through the water, decreasing fuel economyand making it hard to increase speed. Oper-ating with excessive trim-in at higher speedsalso makes the boat unstable. Resistance atthe bow is greatly increased, heightening thedanger of “bow steering” and making opera-tion difficult and dangerous.NOTE:Depending on the type of boat, the outboardmotor trim angle may have little effect on thetrim of the boat when operating.EMU27933Tilting up and downIf the engine will be stopped for some time orif the boat is moored in shallows, the out-board motor should be tilted up to protect thepropeller and casing from damage by colli-sion with obstructions, and also to reducesalt corrosion.WARNINGEWM00220Be sure all people are clear of the out-board motor when tilting up and down,also be careful not to pinch any bodyparts between the drive unit and enginebracket.WARNINGEWM00250Leaking fuel is a fire hazard. If there is afuel joint on the outboard motor, discon-nect the fuel line or close the fuel cock ifthe engine will be tilted for more than afew minutes. Otherwise fuel may leak.CAUTION:ECM00241 Before tilting the outboard motor, stopthe engine by following the procedureon page 34. Never tilt the outboard mo-tor while the engine is running. Severedamage from overheating can result. Do not tilt up the engine by pushing thetiller handle (if equipped) because thiscould break the handle.EMU28006Procedure for tilting upPower trim and tilt models / power tilt models1. Place the remote control lever / gearshift lever in neutral.