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No. of cylinders/configuration
4 /In-line, 16-valve, SOHC
Bore x stroke
65.0 mm x 75.0 mm
Prop shaft output at mid range
51.5 / 5,800 rpm
Full throttle operating range
5,300 - 6,300 rpm
Fuel Induction System
Ignition / advance system
Electric with Prime Start™
Recommended boat transom height
Weight with propeller
F70AETL: 119.0kg,F70AETX: 121.0kg
Fuel tank capacity
Oil pan capacity
Trim & tilt method
Power Trim & Tilt
Lighting Coil / Alternator
12V -15Awith rectifier/regulator
Variable Trolling RPM
With DN Gauges or m-f tiller handle
Shift Dampener System (SDS)
The kW data in this sheet is based on the ICOMIA 28 standard, measured at the prop shaft
EFI system for greater efficiency and economy
Electronic fuel injectors deliver the exact amount of fuel needed for optimum performance and economy. Controlled by the ECM via input from an array of engine sensors, their location just above the intake valves enhances fuel atomisation, resulting in more efficient combustion.
Micro-computer ECM (Engine Control Module)
This micro-computer is the ‘brain’ hidden inside your engine. It constantly monitors data inputs and settings, ensuring smooth running and optimised ignition timings – as well as automatically activating warning lamps and protection systems. A handy computer access port allows an authorised Yamaha dealer to diagnose any problems.
Yamaha's unique Y-COP immobiliser system is a simple, easy to use and highly effective option – the neat and simple remote control locks and unlocks the engine at the push of a button. This prevents your outboard engine being taken for an unauthorised joyride, offering you peace of mind when leaving your boat unattended.
Compact shape and solid one-piece top cowling
With the advanced design and modest overall dimensions of this 4-cylinder unit, our engineers have produced a remarkably compact 996cc powerhouse, but with a low weight that is comparable to a conventional 3-cylinder engine. So the F70 has power-to-weight ratios that make it the ideal choice for a wide range of boats.
Variable Trolling RPM control
With the press of a button on the optional Digital Network's Tachometer – or via the variable trolling RPM switch on the optional multi-function tiller handle – the driver can adjust the engine speed for relaxed trolling, in precise steps of 50 RPM, between 620 and 900 RPM.
16-valve, in-line 4 cyl, SOHC, EFI
The F70's advanced, lightweight powerhead design features a single overhead camshaft (SOHC) with four valves per cylinder, for maximum power and efficiency. A large intake valve area with lightweight pistons and valves give class-leading horsepower-per-litre.
Special high gear ratio 2.33
The Yamaha F70 provides outstanding 'out of the hole' acceleration, thanks in part to the lower gearcase design which features a high gear ratio of 2.33:1. The extra toughness comes from the fact that all gears (Forward, Reverse and pinion) are specially hardened for increased durability.
Yamaha Digital Network Gauges
The F70 is compatible with Yamaha’s Digital Network Gauges, giving you the information needed to maximise engine performance and efficiency, including: a Multifunction Tachometer with RPM, Hours Run, Trim Angle, Oil Pressure, Warning lamps and Variable RPM control; and a Speed/Fuel Management Gauge with Speed, Tank Capacity and Fuel Economy.
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