Yamaha F6SMHA Outboard Motor
6hp, 15" Shaft, Tiller, Manual Start.
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For Those Who Want Power, Performance and Portability.
The sun just broke the horizon, but your day began hours ago—the second you started your trusty Yamaha Portable. Maybe you’re skimming the marsh in a jon boat during duck season, pushing a sailboat ‘til the wind kicks up or hopping to the cuddy on a tender. Wherever the day takes you, these nimble, lightweight, efficient portables are up for the ride. Available in a range of horsepower from the F20, to the F2.5, including the redesigned F8 with 7.5 percent more displacement, these 1- or 2-cylinder dynamos provide big performance in streamlined designs.
Here’s why so many boaters carry Yamaha reliability with them, wherever they go:
Incredibly Light: Yamaha Portables are incredibly light, weighing as little as 37 pounds. Talk about punch you can pack.
Easy to Carry: Select models feature built-in front and rear carry handles for maximum portability. Plus, recent re-designs have made several of our portables, well, even more portable. The F9.9 is 12% lighter than previous designs, and we’ve trimmed 23 pounds from our F6.
Max Maneuverability: Our 5-Step Trim Adjustment and 3-Step Shallow Water Drive System (on select models) protects your propeller in skinny water, making these pintsized powerhouses extremely maneuverable and getting you where you need to go.
Fuel Efficiency: The smaller the motor, the less fuel it consumes, true. However, one of Yamaha’s portables actually made it into the Guinness Book of World Records for the most miles traveled on one gallon of gas, going 67.27 continuous statute miles.
Smart Innovation: Our Easy Oil Retention System allows the F6, F4 and F2.5 to be stored on their sides or front grip without oil leakage. Our F15 and F20 designs feature a water-cooled fuel pump, boosting power and preventing warm weather starting issues like vapor lock.
Power and Performance Benefits
Maximum Overall Performance: Microcomputer Ignition adjusts timing to maintain optimum engine performance, economy and power under all conditions. (F8 and up)
Ultra-Low Emissions: All Yamaha portables are California Air Resources Board (C.A.R.B.) Three-Star Rated for Ultra-Low Emissions. All Yamaha portable outboards meet federal EPA requirements.
Fuel Efficiency: Of course, small motors use less fuel, but the Yamaha F4 actually set a world record for fuel efficiency. According to the Guinness Book of World Records, an F4 traveled 67.27 continuous statute miles on one gallon of gas.
Reliability and Durability Benefits
Propeller Protection: Yamaha’s Shallow Water Drive (standard on all tiller handle models except the F2.5) helps keep the propeller and lower unit out of harm’s way in shallow water.
Extended Engine Life: A Freshwater Flush Device allows you to flush the engine without starting it, for maximum convenience, durability and engine life. (Available on F15 and F20.)
Corrosion Protection: Combined with our proprietary alloy (YDC-30), our exclusive Phaze Five™ electro-deposited, anti-corrosive paint system provides a tough, five-layer barrier against corrosion. This protection is standard on all Yamaha portable four-stroke engines.
Warranty Protection: All Yamaha four strokes are protected by our Three-Year Limited Warranty for pleasure use. Beyond that, Yamaha Extended Service (Y.E.S.) plans are available, for continued coverage after your three-year factory warranty expires.
Convenience and Control Benefits
Max Maneuverability: 5-Step Trim Adjustment and 3-Step Shallow Water Drive System (on select models) protects your propeller in skinny water, makes these pintsized powerhouses extremely maneuverable and gets you where you need to go.
Efficient Operation: Microcomputer Ignition automatically adjusts timing to maintain optimum engine performance, economy and power under all conditions. (F8 and up)
Easy Engine Flushing: A Freshwater Flush Device allows you to flush the engine without starting it, for maximum convenience. (Available on F15 and F20.)
Easy Storage: Yamaha’s F2.5, F4, and F6 feature a pressurized oiling system, our Easy Storage Oil Retention System. This means they can be stored on either side or on the front grip without fear of oil leakage.
Comfortable Operation: The Tiller Handle features a dynamically balanced and dampened large twist-grip throttle, 180° steering and large F-N-R shift handle, for maximum comfort, convenience and control. (Available on F6 and F4.)
Lightweight Portability: Yamaha portables feature SOHC (Single Overhead Camshaft) or OHV (Overhead Valve) configurations and weigh as little as 37 pounds (dry weight). Outboard power doesn’t get much more portable than this.
Streamlined Intake Manifold
Long Span Mounting System
Four Stroke Engine Design
California C.A.R.B. Ultra Low Emissions 3 Star Rating
Overhead Valve (OHV) Design
2-Valves Per Cylinder
Precise Carburetor Setting
Built-in Auxiliary Priming Pump
Dynamically Balanced Crankshaft
Phaze Five™ Paint System
Stainless Steel Driveshaft, Prop Shaft, Shift Shaft and Steering Tube
Built-in Fuel Filter
Splined Prop Shaft
Thermostatic Temperature Control
Dual Transom Clamps
Shallow Water Drive
Multiple Gripping Points
180-Degree Steering w/F-N-R Shifting
Easy Storage Oil Retention System
Standard Tiller Handle
Easy Start Decompression Device
Lubrication Check Window
Dynamically Balanced Tiller Handle
Lower Cowling Damper
Built-In See-Through Fuel Tank
Tilted Fuel Filler Opening
Selectable External Fuel Tank (Optional)
Built-In Fuel Tank
Engine Type: One-Cylinder
Displacement: (139cc) 8.5 ci
Bore x Stroke: 62 x 46mm (2.44 x 1.81 in.)
Prop Shaft Horsepower: 6hp @ 5000rpm
Compression Ratio: 8.9:1
Fuel Induction: OHV
Exhaust: Above Propeller
Spark Plug: CR6HSB-000-000
Alternator Output: 6 Amp (Optional: Requires Charging Kit)
Starting System: Manual
Lubrication: Wet Sump
Engine Oil Capacity: .6L (.63 qt)
Full Throttle RPM Range: 4500 ~ 5500 rpm
Cooling: Water/Thermostatic Control
Recommended Engine Oil: Yamalube® 4M (See owner's manual)
Recommended Fuel: Regular Unleaded (Minimum Pump Octane 87)
Recommended Fuel Filtration: Yamaha mini-10 Fuel/Water Separating Filter (external)
Ethanol Blend Limit: 10% Maximum
Gear Ratio: (27:13) 2.08:1
Gear Shift: Forward, Neutral, Reverse
Shaft Length: S=15 in.
Degree of Tilt: 69 deg.
Degree of Trim: 5 positions
C.A.R.B. Rating: 3-Star
Dry Weight: F6SMHA = 27kg (60 lb.)
Steering Angle (maximum): 90 deg. from center, either direction
Warranty: 3-year Pleasure, 3-year Government, 1-year Commercial