Yamaha F6C Owner's Manual

Also see for F25A: Service manual Owner's manual Service manual Service manual Owner's manual

Contents

Specifications and requirements14Tightening torque for engine:Spark plug:F2.5AMH 25.0 Nm (2.55 kgf-m,18.4 ft-lb)F4BMH 13.0 Nm (1.33 kgf-m, 9.6 ft-lb)F5AMH 13.0 Nm (1.33 kgf-m, 9.6 ft-lb)F6CMH 13.0 Nm (1.33 kgf-m, 9.6 ft-lb)Engine oil drain bolt:18.0 Nm (1.84 kgf-m, 13.3 ft-lb)Noise and vibration level:Operator sound pressure level (ICOMIA39/94 and 40/94):F4BMH 77.5 dB(A) (*EC1)F5AMH 77.5 dB(A) (*EC1)F6CMH 77.5 dB(A) (*EC1)(*EC2)Vibration on tiller handle (ICOMIA 38/94):F4BMH 5.5 m/s² (*EC1)F5AMH 5.5 m/s² (*EC1)F6CMH 5.5 m/s² (*EC1)(*EC2)EMU33554Installation requirementsEMU33564Boat horsepower ratingWARNINGEWM01560Overpowering a boat can cause severe in-stability.Before installing the outboard motor(s), con-firm that the total horsepower of your out-board motor(s) does not exceed the boatsmaximum horsepower rating. See the boat’scapacity plate or contact the manufacturer.EMU43000Mounting the outboard motorF2.5AWARNINGEWM01570 Improper mounting of the outboard mo-tor could result in hazardous conditionssuch as poor handling, loss of control,or fire hazards. Because the motor is very heavy, spe-cial equipment and training is requiredto mount it safely.Your dealer or other person experienced inproper rigging should mount the motor usingcorrect equipment and complete rigging in-structions. For further information, see page31.F4B, F5A, F6CWARNINGEWM02430Improper mounting of the outboard motorcould result in hazardous conditions,such as poor handling, loss of control, orfire hazards. If you are not able to mountthe outboard motor properly, consult aYamaha dealer.To lift and mount the outboard motor, twopeople are necessary. For further information,see page 31.EMU34195Propeller selectionNext to selecting an outboard motor, selectingthe right propeller is one of the most importantpurchasing decisions a boater can make. Thetype, size, and design of your propeller havea direct impact on acceleration, top speed,fuel economy, and even engine life. Yamahadesigns and manufactures propellers for ev-ery Yamaha outboard motor and every appli-cation.Your outboard motor came with a Yamahapropeller selected to perform well over arange of applications, but there may be useswhere a different propeller would be more ap-propriate.Your Yamaha dealer can help you select theright propeller for your boating needs. Selecta propeller that will allow the engine to reachthe middle or upper half of the operatingrange at full throttle with the maximum boat-