Yamaha F6D Ower's Manual

Also see for F6D: Owner's manual

Contents

Operation25tends to occur, thus reducing the propulsion;and if the propeller tips cut the air, the enginespeed will rise abnormally and cause the en-gine to overheat. If the mounting height is toolow, the water resistance will increase andthereby reduce engine efficiency. Mount theoutboard motor so that the anti-cavitationplate is between the bottom of the boat and alevel 25 mm (1 in.) below it.NOTE: The optimum mounting height of the out-board motor is affected by the boat and mo-tor combination and the desired use. Testruns at different heights can help determinethe optimum mounting height. Consult yourYamaha dealer or boat manufacturer forfurther information on determining the prop-er mounting height. For instructions on setting the trim angle ofthe outboard motor, see page 36.EMU26970Clamping the outboard motor1. Place the outboard motor on the transomso that it is positioned as close to the cen-ter as possible. Tighten the transomclamp screws evenly and securely. Oc-casionally check the clamp screws fortightness during operation of the out-board motor because they could becomeloose due to engine vibration.WARNINGEWM00640Loose clamp screws could allow the out-board motor to fall off or move on the tran-som. This could cause loss of control andserious injury. Make sure the transomscrews are tightened securely. Occasion-ally check the screws for tightness duringoperation.2. If the engine restraint cable attachment isequipped on your engine, an engine re-straint cable or chain should be used. At-tach one end to the engine restraint cableattachment and the other to a securemounting point on the boat. Otherwisethe engine could be completely lost if itaccidentally falls off the transom.ZMU020110–25mm(0–1in.) ZMU02012ZMU02013