F70

Four Stroke F70. One Step Ahead.

Yamaha F70 is a further development of the F60, sharing the same displacement and stroke. The engine is lighter than any competitive four stroke or direct injected two stroke motor in the 70 – 75 horsepower class. The F70 achieves this by its unique four valves per cylinder design activated by a single overhead camshaft rather than the conventional dual camshaft design for 16 valve engines. This reduces the weight that would result from having an extra camshaft and the components that go with it.

For a remarkably light engine, the F70 punches well above its weight. Four valves per cylinder have dramatically increased this engines volumetric efficiency - the efficiency with which the engine can draw fuel and air in and push exhaust out of the cylinders. Increasing this efficiency means the F70 is able to run at a higher RPM with the max operating RPM being increased to 6300 RPM. The resulting top end performance will be great for boaters who want to get to their favourite spot first – and who doesn’t?

Specifications

Engine

Engine Type	4-Stroke, 16 Valve SOHC In-line 4 Cylinder
Displacement	996 cc
Bore x Stroke	65 x 75 mm
Recommended Max RPM	5300 - 6300
Lubrication System	Wet sump
Fuel Management	EFI
Ignition	TCI
Starter System	Electric
Alternator Output	12V-16A with Rectifier Regulator
Operation Method	Mechanical Control (Optional Tiller Handle Available)
Trim & Tilt Method	Power Trim & Tilt
Digital Gauges	Optional
Digital Network Gauges with Fuel Management	Optional
Gear Ratio	2.33:1
OEDA Emission Rating

Dimensions

Height	F70LA : 532 mm (20.9 in) F70LX : 648 mm (25.5 in)
Weight	F70LA : 119 kg F70LX : 121 kg