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Yamaha 40 / 30 HP
The Yamaha 40 hp and 30 hp Midrange four strokes are known for their small size and solid performance. Light and powerful, these nimble, three-cylinder wonders are perfect for light duty on skiffs, jons and inflatables and small pontoons or aluminum fishing boats. With single-overhead camshafts and electronic fuel injection, they deliver quick starts, responsive power, quiet operation and valuable efficiency.
Make an appointment with Tom Ross to come in and see this motor in person.
Fuel Economy
Precision Multi-Point Electronic Fuel Injection delivers the exact amount of fuel needed for optimum performance and efficiency. Yamaha’s EFI optimizes fuel atomization further enhancing fuel economy.
Single Overhead Camshaft
A Single Overhead Camshaft (SOHC), three-cylinder design on the F40 and F30 provides a compact, lightweight, space-saving design.
Precise Throttle Control
All air entering the engine block of is routed through a single throttle valve, to ensure the precise amount of air necessary for optimum power and fuel efficiency. It then enters each cylinder through individual long intake tracks, which are ‘pulse tuned’ to provide air at the precise volume and timing for maximum density and power.
Dependable Starting
The F40 and F30 feature a vapor-reducing fuel return system. Used in conjuction with multi-point electronic fuel injection, they offer dependable turn-key starting in hot or cold conditions.
| Engine Type | 3 cyl |
| Displacement | 747cc |
| Bore x Stroke | 65 x 75mm (2.56 x 2.95 in.) |
| Prop Shaft Horsepower | 40hp at 5500rpm / 30hp at 5500rpm |
| Full Throttle RPM Range | 5000 ~ 6000 rpm |
| Alternator Output at W.O.T. | 17 Amp |
| Compression Ratio | 9.4:1 |
| Fuel Induction System | EFI |
| Weight | 97 kg (214 lbs) - 101kg (223 lbs) |
| Recommended Fuel | Octane 87 |
| Recommended Engine Oil | Yamalube® 4M (See owner's manual) |
| Recommended Fuel Filtration | Yamaha 10-Micron Fuel/Water Separating Filter (external) |