[scepticus]

The following year, Yamaha commercialized four models of 4-stroke outboard motors (9.9/15 horsepower, 25 horsepower, 40 horsepower, and 50 horsepower). Following this achievement, in 1998, Yamaha developed the lightweight, fuel efficient F100, which utilized dual overhead cam technology, and the F115, which was equipped with an electronic fuel. Re: Fuel economy on 15 HP Merc four stroke. what to expect? I normally use the Yamaha web site for rough fuel consumption information since they have a very nice collection of performance tests for nearly any boat on the planet (or at least you can find one very like the one you are interested in) as well as fuel consumption, time to plane and rpm at given speeds Outstanding Fuel Economy and Clean Emissions. Yamaha offers a full model lineup in four stroke engines from 425ps to 2.5ps that deliver superb fuel economy and cleaner emissions. Outboards of 20ps and higher are equipped with high-performance fuel injection to take that performance to even higher levels. In many models, our advanced technology.

[jimbob007]

.9 - 15 - 20 - 25 - 50 - 60 - 90 - 115 - 150 - 200 - 225 - 250 hp Liters and Gallons per Hour | Fuel consumption. Yamaha vs Honda Outboard: Honda BF 40 - 50 - 75 - 90 - 135 - 150 - 225 - 250 hp | Yamaha F 25 - 70 - 115 - 150 - 200 - 250 - 300 - 350 hp 4-stroke. Jet Drive 40 hp. Our 747-cc F40 Jet Drive four stroke produces 30 hp at the pump. Its compact, light-weight SOHC three-cylinder, in-line design features a long-track induction system and a single throttle valve. This creates compact, light-weight power and improves throttle response This two-inch, backlit, analog gauge displays fuel tank levels with accuracy and easy readability. It features a modern faceplate design, and comes in either a chrome bezel with black, silver or white faceplates, or a black bezel with a black faceplate. NEW! Sport Series Analog Trim Meter. Part #: N80-83670-30-00

[denaje]

This is me testing our new boat. It is a 17 Feet fibreglass boat fitted with a Yamaha 50 HP Outboard 4 Strokes. Reaching a top speed of around 32 km/h. We we.. The answer to this four-year-old inquiry (begun in 2002) is that a conventional two-stroke will burn about about one-tenth of its rated horsepower in gallons-per-hour at full throttle, or a 90-HP will burn about 9-gallons-per-hour, and so on. You can find more information on how to estimate fuel consumption by using the brake specific fuel. The Yamaha F75 and F90 outboard engines are available from dealers throughout Australia. Pricing starts from $12,860 and $14,500 (plus installation) respectively. Specifications: Yamaha 75 - 90hp. Engine type: Four-stroke SOHC 16-valve. Cylinders: In-line four-cylinder. Fuel delivery: Electronic fuel injection L4 200-115ps. Essential Four Stroke Compact, lightweight and compatible with a variety of applications. In-line 4-cylinder models delivering reliability and amenity. The in-line 4-cylinder models deliver high performance in a lightweight and compact package. These are multi-functional outboards with excellent fuel economy and great versatility The fuel pump is one part on your outboard, but your boat simply will not run without it. In this video from Boats.net, Garrett takes you through some common..

[suckless]

The cosmopolitan spirit of BoatMag International covers news and previews about products from allover the world, discovered in first person by its contributors at the main international shows and events.

[bravenec]

Even the ordinary maintenance has been simplified: the single camshaft distribution made service intervals longer, while even installation is quicker thanks to specific parts and common platforms across the range. Finally, we remind that the new 2.1 liters is available in three power steps: 80, 100 and 115. Much likely, the latter will be the most popular. more

[jarlethaanthonyt]

Technical features
Architecture 4-in-line, 4 strokes
Valves 8
Displacement 2064 cc (126 cubic inches)
Revs 5000-6000
Final ratio (CT leg) 2.38
Price 115 EFI € 10.700 VAT included
Price 115 EFI CT € 10.950 VAT included [links]

[chupacabra]

Now 7 years old, my DT40 hasn't missed a beat. Serviced every two years just fill it up and go. Quicksilver oil has worked fine. My DT40 starts first time on cold starts at the ramp, just give it revs and choke. Not the most fuel efficient or quiet motor but it is a two-stoke and a good option if you are after something cost-effective and reliable. Saying that tho, I would always recommend a 4-stroke over a two stroke especially at 40HP and above due to efficiency and convenience with refuelling.

[cardinalshark]

Keep the fuel fresh and clean, use fuel stabilizer and quality two stroke. Clean your fuel filter regularly and check for debris and water in it. Clean your carb out thoroughly. Remove the carb, float bowl, float, fuel inlet valve, lower main jet, top idle jet and air screw. Blast it out with compressed air. Check the small holes on the jets for debris - the usual cause of idle problems. more

[Artlav]

Reassemble with the air screw 1.75 turns out and use the idle. [links]

[Wofi]

Re: Fuel Consumption Question Merc 60HP 4 Stroke more

[Set WilliamA]

Reasonable but rather meaningless since you don't have an odometer unless you have a gps unit. Fuel flow is best determined in gallons per hour and your 60 HP at wide open throttle will burn 6 gallons per hour. At half to 2/3 throttle it will be somewhere in the 3 - 4 gallons per hour range. Now the interesting part is that you can run wide open and consume the same amount of fuel (or very nearly so) as if you ran at 1/2 or 2/3 throttle. Why. Because you have to run longer to get where you are going at lesser throttle settings.

[M.I.]

Re: Fuel Consumption Question Merc 60HP 4 Stroke

[BTCsaavy]

Thanks for the quick feedback.
I am confused though (not an abnormal state for me, smile. ).
Best as I can recall we ran 1 hour 45 minutes and covered a good 16 miles (based on known mile markers in the river) (8 with the current and 8 against the current) . We started off with 2 topped off 6 gallon tanks. After we returned I refilled the used tank with a five gallon can and had about a 1/2 gallon of fuel left in the refill can.
Does this make sense ??
I know its no big deal but I would like to be able to predict approximate fuel requirements for some fall river trips.
The wife and I don't run WOT, we sip coffee and run 1/2 maybe 2/3 throttle at most. My 20 plus year old pontoon misbehaves if I push her too hard (course. so does the missus)