Slightly more power for the people
Yamaha F2.5 outboard engine
Emissions reduction, as ever, feature heavily in the press release of the latest Yamaha F2.5 outboard. Finetuning of the piston, cylinder, cylinder head and manifold are responsible for an improvement in engine efficiency which, by eking out more from every drop of unleaded, simultaneously improves not only the emission levels but also the performance and fuel economy.
More obvious improvements for the end user start with the adoption of a large twist-grip throttle, greatly improving convenience and bringing the motor in line with larger portable Yamaha outboards. You still need to spin the engine through 180° to go backwards, but a neutral gear facility is a very worthwhile improvement.
Practicality has been augmented with the facility to lie the engine down flat in three positions without oil leaks from the single-cylinder four-stroke 72cc engine. You can store the F2.5 on either side or on its front without the risk of oil spillage and there’s a comfortable carry handle on its back (which is also useful when reversing). Finally, the integral 0.9-litre fuel tank has been made see-through for easier gauging of fuel level and the oil level can be checked via a clear window or by using the dipstick now integral with the oil filler cap. Being a deliberately basic, portable engine, there’s still a manual choke for the carburettor, however – no fuel injection here. I wonder how many people even know what that is these days, much less how to use it? Don’t worry, it’s in the instruction book. Price £699. Contact www.yamaha-motor.eu