[CODERsp]

In terms of overall ease or use and reliability, I can honestly say that the motor has started first turn of the key since day one and hasn’t missed a beat. I don’t recall ever smelling or seeing any exhaust fumes. The engine is whisper quiet at low and middle revs and has a nice muted howl at WOT. On the downside, it vibrates more than expected at low revs, which is annoying when slow trolling. Yamaha advises that upgrading to a stainless steel prop would eliminate this, and also improve overall efficiency and speed. [links]

[Delia]

The net result of this increased efficiency means the F70 is able to run at higher RPMs (up to 6300RPM, in fact). And higher RPMs mean higher speeds, an important consideration for competition anglers and those, like me, who don’t have time to waste puttering along.

[komoto]

Like most modern outboards, the F70 is fully rigged up for digital control via its dual LAN gauges. These gauges provide all the info you need to monitor engine performance and provide far more detail than you’d get in even the most upmarket motor vehicle. [links]

[fabianhjr]

YAMAHA’s newly released F70 four-stroke marks a further continuation in the evolution of light, powerful and fuel-efficient outboards. According to Yammie, the inline four cylinder F70 is an enhancement of the Japanese engine maker’s popular F60. It shares the same displacement (996cc) and is only marginally heavier (10kg) than the F60. But the F70 differs from the F60 via its a unique engine design. Unlike other 16 valve engines, the F70 operates via by a single, not dual, overhead camshaft. This gives it a weight advantage over its competitors in the 70-75hp class and also increases performance.

[m0Ray]

And the go-fast boys are using upwards of 100 litres of fuel an hour. With my Yammie flat stick at 6000RPM, I’m using just under 23 litres an hour.

[Asheara]

Fuel economy could be 100 percent better than a 4-stroke outboard at trolling speeds.

[sudeyaa]

Direct injection works on a 4-stroke engine too, and it is a design feature of the new 425-hp Yamaha XTO outboard. In a 4-stroke, direct injection improves power and efficiency. Yamaha and Mercury have stopped producing direct-injection 2-stroke outboards (Tohatsu still builds a few), but the latest-generation 4-strokes weigh the same as 2-strokes and offer the latest digital advances.

[filo_gost]

E-TEC G2 is the latest BRP refinement of this technology, developed with computer modeling tools that helped devise new combustion chamber and piston shapes, porting designs and an injector. The result, according to BRP, is a motor that offers outstanding midrange torque and low emissions, with fuel economy that may be 100 percent better than a 4-stroke outboard’s at trolling speed. (Note that a direct-injection 2-stroke still requires a mist of oil to be created in the crankcase to lubricate bearings, so there’s an oil reservoir required either in the boat or on the motor. A 4-stroke has a sump of oil that needs to be changed annually.)

[aisnake]

Yamaha’s revolutionary F200 I4 inline four-cylinder, four-stroke outboard should prove to be equally as popular in both new boat and repower applications. It follows the recent trend of many next-gen four-strokes to shed some pounds and get lighter on the transom. This in turn allows the boat to go faster and typically burn less fuel in the process.

[cdnbcguy]

The one place where the new F200 I4 is a clear winner is in the repower game, where her decreased heft (129 pounds per engine) and bulk will allow her to easily mount into pre-drilled 26-inch centers, the usual historical norm for narrow beam (eight to 8.5 feet) twin outboard installations. If you are replacing old and tired two-strokes, this new Yamaha F200 I4 should not require that you change the angle of your waterline or worry about your scuppers being underwater, a real problem that some of the first-gen four-stroke V-6 outboards posed to older and experienced hulls dated prior to 2004.

[ichi]

REAL WORLD RESULTS
Looking at some side-by-side factory test comparisons on a pair of Sportsman Heritage 229 center consoles, the slimmer (489 pounds) 2.8L F200 I4 holds her own against her heftier (608 pounds) 3.3L F200 V-6 sister. With the bigger V-6 hitting a top speed of 47.8 mph at 5900 rpm spinning a 19-inch pitch prop, with an optimum cruise of 26 mph at 3500 rpm using 6.3 gallons per hour for a net of 4.13 mpg, the family challenge was clearly established. The F200 I4 rose to the occasion with a top speed of 47 mph at 6050 revs swinging a 17-inch pitch prop, with an optimum cruise of 23.5 mph at 5.2 gph for a net of 4.52 mpg. Translated, this is a virtual “draw,” with the V-6 model squeezing less than a 1-mph advantage at full throttle and a slightly faster optimum cruising speed (+2.5-mph), with the I4 using 0.39 less gph at their best throttle positions for fuel economy. Both were equally as quick out of the hole from a standing start (3.42 seconds to plane with the V-6; 3.38 seconds to plane with the I4), with the burly V-6 a bit faster from 0 to 30 mph (5.95 seconds vs. 7.39 seconds for the I4) as one might expect from having two added cylinders. In a twin engine installation, a pair of F200 I4s mounted to the transom bracket of a Regulator 26 FS center console will turn a top speed of 50 mph on the GPS nav unit, with an optimum cruise of 30.5 mph at 4000 rpm while burning only 15 gph, for a net of 2.03 mpg.

[traindirector]

, 2021 0 masuzi 6 2 5 hp portable outboard motors f6 yamaha motor australia yamaha four stroke 6hp outboard engine yamaha f6 6 hp outboard motor smal Here is a video of my 6 horse power Yamaha outboard motor. I was alone in a 310 zodiac when filming and the sea was pretty good. I am really surprised about. The Yamaha Outboard Motor 60hp with model number 60HMHDL has a two-stroke engine. Powered with a 60 horsepower engine, this motor deliver excellent fuel economy. It is highly powerful, yet compact and lightweight. The engine structure ensures that it is simple to maintain and gives you a long service life

[Dekember]

Yamaha F 4-stroke Outboard Motor Fuel Consumption Yamaha F 25 hp 9.45 LPH | 70 hp 2-stroke 27.5 LPH | 90 hp 34.4 LPH | 115 hp 36.6 LPH | 150 hp 58.6 LPH | 200 hp VMAX / HPDI 72.6 LPH | 250 hp 89.9 LPH | 300 hp 98.3 LPH | 350 hp 129 LPH Liters per hour | 425 hp 140 LPH Liters per hour | Portable outboard Yamaha 4 - 5 - 6 - 8 - 9.9 - 15 - 20 hp | Also Fuel usage Gallon

[mike_la_jolla]

Yamaha outboard motors are different from the remaining unmatched reliability, exceptional quality, remarkable fuel economy, and ease of compact design art. Yamaha outboard motors Yamaha Motor Co., Ltd. has been manufacturing outboard motors since 1960 Suzuki 30 HP DF30ATL2 Outboard Motor. Modern, clean environmental design make the new Suzuki 30 HP outboard motor, model DF30ATL2, the most advanced portable outboard on the market today. This is the world's first portable 30 hp outboard motor designed for fuel efficiency and clean power with a Battery-Less Electronic Fuel Injection engine here