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Home » Yamaha Outboards » Mid Range 4-Strokes » Mid Range Four Stroke F70
The launch of Yamaha’s F70 changed customers’ expectations of outboards in this category forever.
Beating in the heart of the F70 is a unique four-cylinder, 16-valve design activated by a single overhead camshaft. The 4-valves per cylinder valvetrain has dramatically increased this outboard’s volumetric efficiency, effectively transferring more air and exhaust at a more efficient rate. This makes the F70 more fuel-efficient, promotes a stronger torque band and makes the F70 lighter than all four-stroke and direct injected two-stroke competitors.
The F70’s awesome performance offers huge versatility and makes it the perfect power option for a huge range of mid-sized fishing boats and pleasure craft.
The 70 horsepower is now available in both traditional Yamaha grey and new pearlescent white colour options, in a long shaft only.
The Yamaha F70 utilises an advanced 1.0 litre, sixteen-valve, four-cylinder marine engine, featuring a sophisticated single-overhead camshaft (SOHC), with four-valves per-cylinder valve-train for maximum power and efficiency. Weight is reduced while the intake valve area is increased 17%.
The Multi-Point Electronic Fuel Injection (EFI) system, injects the right amount of fuel into the combustion chamber at the optimum timing. This system takes into account engine speed and load requirements to achieve maximum engine performance including hot and cold starting and improved fuel efficiency.
Simply connect a hose to the easy access connector to flush salt and dirt from the outboard without having to run the engine. Flushing the engine after each usage reduces corrosion and extends the engines life.
We take out the guess work in buying a new outboard, by rigorously testing our engines on Australia's most popular boat brands. See how the F70 performs for acceleration, fuel economy and top-end speed on your favourite boat.
Yamaha offers a range of rigging options to suit every boat. Check out the full suite of controls, gauges, switches, props and other technologies, plus outboard performance data.
The F70 provides outstanding holeshot and acceleration performance thanks in part to an advanced engine sensors that monitors and adjusts ignition timing for maximum performance and a gear case featuring a high 2.33:1 gear ratio, with specially hardened pinion, forward, and reverse gears for increased durability.
A 12-Volt 15-Amp high-output alternator ensures that power is always available to start the engine, even after long periods of idling or running at low revs. This not only provides extra starting power, but delivers sufficient power to run the wide array of on-board electronic devices used in modern boating.
Yamaha’s push-button trim control makes engine trim and tilt adjustments quick, smooth and easy, across a wide trim range. The negative trim settings allow for improved acceleration and the ability to bring the boat onto the plane more quickly.
As air enters the F70, it 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.
Yamaha’s variable trolling control allows you to precisely adjust the engine’s idling speed from 650 to 900 RPM in 50 RPM increments. The ability to finely tune the trolling speed allows fisherman to perfect their lure presentation when chasing different species of fish.
Engine Type | 4-Stroke, 16 Valve SOHC In-line 4 Cylinder |
Bore x Stroke (mm) | 65 x 75 |
Fuel Tank Capacity (l) | |
Displacement (cc) | 996.0 |
Recommended Maximum RPM | 5300 - 6300 |
Fuel Management | EFI |
Ignition | TCI |
Lubrication System | Wet sump |
Alternator Output | 12V-15A with Rectifier Regulator |
Gear Ratio | 2.33:1 |
Starter System | Electric |
Operation Method | Mechanical Control (Optional Tiller Handle Available) |
Trim and Tilt Method | Power Trim & Tilt |
Digital Gauges | Optional |
Command Link Gauges | Optional |
Transom Height (mm [inch]) | L: 534 [21.0] | X: 648 [25.5] |
Dry Weight (kg) | L: 119 | X: 121 |
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Chivers Marine
An iconic name in Boating in Western Australia, Chivers Marine has been selling quality marine products since 1958.
The business that Laurie Chivers established over 60 years ago is still family owned and operated with Luke Chivers at the helm.
If you are looking for specialist advice and exceptional value Chivers Marine offers only the best brands supported by the best aftersales service in the industry
Chivers Marine
An iconic name in Boating in Western Australia, Chivers Marine has been selling quality marine products since 1958.
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