2021 Mercury 9.9 MH Fourstroke
SPECIFICATIONS – 25 EFI
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Inventory Details & Specifications for 9.9 HP Mercury 9.9MH 4-Stroke
Mercury 9.9MH 4Stroke Outboard
Horsepower: 9.9 HP
Program Year: 2021
Shaft Length: 15in
Controls: Tiller Handle
Fuel Tank: Remote 3.2 USG / 12 L
RPM Group Services: Pre Delivery Inspection – PDI
Water Testing – 100% ready for operation
Purchase this Mercury outboard model and get a total of 5 years of Mercury factory-backed limited coverage on Mercury 9.9MH 4-Stroke Outboard!
Output far beyond its size
Put amazing power in the palm of your hand. These compact outboard motors take you to the fun, the fish or whatever floats your boat – quickly and reliably. Enjoy best-in-class acceleration to go with best-in-class speed. Easy to install and operate, with reliable starting, low vibration and instant throttle response. It’s worry-free boating at its best of Mercury 9.9MH 4Stroke Outboard.
SMALL OUTBOARDS ARE OF BIG IMPORTANCE
While high-horsepower models usually grab headlines in the world of outboard engines, it’s small outboards that make much of the boating world go around Mercury 9.9MH 4Stroke Outboard.
Announcing NEW Mercury 20hp & 15hp outboards
The ultimate boating experience comes standard. Mercury’s newest addition to its lineup of portable FourStroke outboard motors is designed and built to improve every aspect of your time on the water, from starting the engine to changing the oil and everything in between
Reliability, Portability and Power with the convenience of Propane
Mercury’s all-new 5hp FourStroke Propane outboard provides more convenience and less hassle. With a large 123cc displacement, it offers best-in-class power by delivering a true 5 horsepower. Sail Power model is designed for sailboats, and features an alternator and more thrust.
FOURSTROKE TECHNOLOGY AND MERCURY
Always moving forward. With boater-driven innovations and technologies. Like the world’s first multi-function tiller handle. And a total commitment to corrosion protection, utilizing hard-coat anodizing and a superior multi-step paint process. Mercury FourStroke engines have consistently set the bar for clean, quiet performance and low fuel consumption. Plus, no one has more models to fit your needs.
Sail Power models are designed for boaters who use a small outboard to pilot their sailboat. The Sail Power model is offered in 20-inch (508 mm) and 25-inch (635 mm) shaft lengths, and additional features include:
12 Volt, 4 Amp / 50-Watt alternator charging system with cable allows sailors to charge a battery to run electronics or lights
Reverse-thrust exhaust relief and high-thrust propeller improves slow-speed handling and control
Best Outboard Engines
Which outboard engines stand head and shoulders above the rest? We identify 10 you’d love to have on your boat.
During the past decade outboard engines have grown dramatically in size, popularity, and reliability, with technological advancements so important that the once-settled two-stroke versus four-stroke debate has been re-opened, alternative fuel outboards have become a viable option, and significant benefits like joystick steering are now a consideration. So, how will you know which outboard to choose? Truth be told there aren’t many “bad” options on the market these days, but there certainly are some stand-outs that warrant some added attention. So before you make any moves, be sure to check out these 10 best-of-the-best outboard engines.
In 2014 when the new Suzuki DF25 hit the market, it was the very first outboard of its size to incorporate battery-less EFI. This enables reliable one- to two-tug starting—for real. We tested one for three entire seasons and rarely had to pull the starter cord more than once. EFI also improves fuel efficiency. But perhaps the biggest advantage to eliminating the carburetor is that the closed pressurized system doesn’t leave any fuel exposed to the air, which eliminates most of the ethanol issues that plague small carbureted engines.
The DF25 also has a unique air intake system which improves performance; check out a video by our Outboard Expert of the Suzuki 25 and 30 outboards to learn more.
Another strong contender in the 25 horsepower class is the Yamaha F25. One of our contributors spent a day running the F25 and as you can see in the test and review video, it actually offers peak performance at the top of the RPM range. At 5500 RPM it burns a mere 1.8 GPH and on the AlumaCraft Escape 145 test boat, cruised along at 12.1 MPH. Most outboards of this size get run for extended periods at or near wide-open throttle, so this high-end efficiency is a big deal. On top of that, the F25 has battery-less EFI and weighs 136 pounds, making it the lightest 25 HP outboard currently on the market.
Find out more about all the newest Yamaha outboard models in The Outboard Expert: New F25, F75, F90 Outboards from Yamaha.
Five years ago Mercury rolled out a new 2.1-liter outboard in 75, 90, and 115 HP ratings, and these engines have close to the most displacement in their class while keeping weight at the lowest end of the class. At 359 pounds, in fact, it under-cuts the older 1.7-liter Mercury offerings by 40 pounds. Our Outboard Expert Charles Pluddeman described these engines as running “sewing-machine smooth,” and according to Mercury, an amazing 17,000 testing hours went into developing these outboards.
TORQEEDO DEEP BLUE
The Torqeedo Deep Blue is an electric outboard which marks this well-known manufacturer’s first attempt at building a mid-sized outboard, with a 60-watt power output that produces thrust approximately equal to an 80 HP gasoline outboard. The advantages of running on all electric are obvious: there’s no exhaust, little noise, no gasoline purchases nor fuel tank to fill, it produces full torque at all speeds, and has no service costs.
The original DF90 was a home-run hit for Suzuki, but after being produced for over a decade, the motor was redesigned in mid-2018. Net result? A smaller, lighter, more fuel-efficient home-run hit. The next-gen 90 has a 91.7 cid four-cylinder DOHC powerhead, an offset driveshaft, and a two-stage gear reduction. That makes for a package three inches shorter and 75 pounds lighter than the old version.
We don’t have a full review of the DF90, but you can see the pair we were talking about in action in our Boating Tips: Docking a Twin Engine Powerboat video.
YAMAHA V-MAX SHO 115
In the 115 HP class we love the Yamaha V-Max 115 SHO, a juiced version of their uber-reliable and time-tested 1.8L F115. The V-Max model spins 5300 – 6300 RPM (as opposed to 5000 – 6000 for the F115) thanks to revised camshafts, a re-mapped ECU, and electronically-controlled throttle. As a point of comparison, that shakes out to an additional 2.7 MPH at top-end on a Skeeter TZX 170 bass boat. Industry standards allow for horsepower ratings with a plus or minus deviation of up to 10-percent, and our Outboard Expert Charles Pluddeman surmised that the SHO version may actually produce as much as 126 horsepower at top-end.
EVINRUDE ETEC G2
A few years back Evinrude introduced their new line of DFI two-strokes, called the G2.
The initial roll-out for these engines began in 2018 with the V-6 and rapidly expanded with the V8 While we said we’d tell you about these 10 best outboards. The Seven Marine 627 is world’s largest outboard and is also the world’s most expensive outboard..
These motors have a power hydraulic helix steering system built in; Perhaps most shocking is that in test after test, we’ve seen a fuel efficiency advantage ranging between 10 and 15 percent as compared to four-strokes. The Seven Marine 627 is world’s largest outboard and is also the world’s most expensive outboard. The final engine on our list is another new line-up of outboards: Mercury’s FourStroke 3.4L V-6 and 4.6L V-8s.
When it comes to four-stroke outboards used to power mid- to large-sized boats.
The ubiquitous Yamaha F250 is the hands-down favorite of boaters across the nation.
This 4.2-liter powerhead has been around for close to a decade and has proven itself with unbeatable reliability.
MERCURY’S FOURSTROKE 3.4L V-6 AND 4.6L V-8S
The final engine on our list is another new line-up of outboards: Mercury’s FourStroke 3.4L V-6 and 4.6L V-8s. These engines are available in 175 to 300 HP models in naturally aspirated versions. The initial roll-out for these engines began in 2018 with the V-6 and rapidly expanded with the V8 While we said we’d tell you about these 10 best outboards. The Seven Marine 627 is world’s largest outboard and is also the world’s most expensive outboard..
While we said we’d tell you about these 10 best outboards. The Seven Marine 627 is world’s largest outboard and is also the world’s most expensive outboard.
We can’t let you go without covering one more powerplant which has an important place in this discussion.
The Seven Marine 627 is world’s largest outboard and is also the world’s most expensive outboard.
The V-Max model spins 5300 – 6300 RPM (as opposed to 5000 – 6000 for the F115) thanks to revised camshafts, a re-mapped ECU, and electronically-controlled throttle Mercury 9.9MH 4Stroke Outboard.
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