Yamaha F2.5 Owner's Manual

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Contents

Specifications and requirements18Starting carburetion system:Choke valveValve clearance IN (cold engine):0.08–0.12 mm (0.0032–0.0047 in)Valve clearance EX (cold engine):0.08–0.12 mm (0.0032–0.0047 in)Lower unit:Gear shift positions:F2.5MHA Forward-neutralF4MHA Forward-neutral-reverseF6MHA Forward-neutral-reverseGear ratio:2.08(27/13)Trim and tilt system:Manual tiltPropeller mark:F2.5MHA BSF4MHA BAF6MHA BAFuel and oil:Recommended fuel:Regular unleaded gasolineMin. pump octane number (PON):86Fuel tank capacity:F4MHA 12 L (3.17 US gal, 2.64 Imp.gal)F6MHA 12 L (3.17 US gal, 2.64 Imp.gal)Fuel tank capacity (built in type):F2.5MHA 0.9 L (0.24 US gal,0.20 Imp.gal)F4MHA 1.1 L (0.29 US gal, 0.24 Imp.gal)F6MHA 1.1 L (0.29 US gal, 0.24 Imp.gal)Recommended engine oil:YAMALUBE 4M FC-W or 4-strokeoutboard motor oilRecommended engine oil grade 1:SAE 10W-30/10W-40/5W-30API SE/SF/SG/SH/SJ/SLEngine oil quantity:F2.5MHA 0.4 L (0.42 US qt, 0.35 Imp.qt)F4MHA 0.6 L (0.63 US qt, 0.53 Imp.qt)F6MHA 0.6 L (0.63 US qt, 0.53 Imp.qt)Lubrication system:F2.5MHA SplashF4MHA Wet sumpF6MHA Wet sumpRecommended gear oil:Yamalube Marine Gearcase Lube orHypoid gear oilRecommended gear oil grade:SAE 90 API GL-4Gear oil quantity:F2.5MHA 0.075 L (0.079 US qt,0.066 Imp.qt)F4MHA 0.100 L (0.106 US qt,0.088 Imp.qt)F6MHA 0.100 L (0.106 US qt,0.088 Imp.qt)Tightening torque:Spark plug:F2.5MHA 25 Nm (2.55 kgf-m, 18.4 ft-lb)F4MHA 13 Nm (1.33 kgf-m, 9.6 ft-lb)F6MHA 13 Nm (1.33 kgf-m, 9.6 ft-lb)Engine oil drain bolt:18 Nm (1.84 kgf-m, 13.3 ft-lb)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.