Yamaha F250 V6 – 25″ Shaft is perfect for offshore dual or center consoles, walkarounds, runabouts and pontoons. It allows you to step up your horsepower and displacement without rigging. Only now, it features a fresh, new cowling design (with stern light if rigged with Helm Master® EX), new integrated digital electric steering* and rerouted exhaust for enhanced reverse thrust. It just proves even the best can get even better.
Power and Performance.
- 4.2 Liter Big Bore Displacement: Yamaha F250 V6 – 25″ Shaft features plasma-fused sleeveless cylinder walls, which are 60 percent harder than steel. That means larger cylinder bores for increased displacement, resulting in more power and torque, without increasing outer cylinder dimensions. It also results in dramatically lighter weight and better cooling, and “micro-textured” cylinder walls that help decrease friction loss, and further increase performance and enhance reliability.
- Best-in-Class Fuel Efficiency: Our Yamaha F250 V6 – 25″ Shaft is up to 17 percent more fuel efficient at 3500 RPM than other four-stroke V6’s.* For maximum power and efficiency, electronically controlled throttle valves work in concert with Precision Multi-Point Fuel Injection to ensure a precise mix of air and fuel. In addition, six individual sensors constantly provide vital atmospheric and engine conditions to the Engine Control Module (ECM), which makes adjustments for performance. (*Testing conducted by Yamaha at Yamaha’s test facility on a Grady-White® 257 Advance, with each boat rigged for maximum performance.)
- Lightest Weight in Class: From the top of the cowling to the tip of the propeller shaft, every ounce of weight-savings has been realized for maximum performance without sacrificing durability. There’s even a new advanced polymer composite lower engine pan that lowers weight and increases corrosion resistance. The 4.2-liter V6’s are up to 73 pounds lighter than other four strokes in their class, at 562 pounds (digitaL and 551 pounds (mechanical).
- Cruising Speed: Yamaha F250 V6 – 25″ Shaft is up to 19% faster at cruise RPM than other 300-hp four-stroke outboards.* Cruise RPM is where most offshore outboards are typically operated, meaning you get there faster, using less fuel, than competitive models. *Testing conducted by Yamaha at Yamaha’s test facility on a Grady-White® 257 Advance, with each boat rigged for maximum performance.
Reliability and Durability.
- Protection from the Elements: All Yamaha V6 4.2-liter outboards feature a proven cowling drain system, to easily and efficiently drain away any water that enters the cowling during normal engine operation. Incoming air is routed through a labyrinth of passages that trap and drain water before it enters the engine’s intake, for maximum reliability.
- Vibration Reduction: Yamaha F250 V6 – 25″ Shaft utilizes our Long Span Mounting System, which employs a specially formulated rubber compound attached to newly designed engine mounts. Placed as far apart vertically and horizontally as practically possible, they provide necessary strength while minimizing vibration.
- Increased Cooling Capacity: Yamaha F250 V6 – 25″ Shaft comes standard with dual pairs of water inlets for increased cooling efficiency. Located on the front and both sides of the lower unit, each pair of pick-ups operates independently of each other to provide proper water flow in a wide variety of applications and conditions.
- Reliability & Efficiency: For increased reliability, individual intake and exhaust camshafts provide more precise valve timing control with fewer moving parts than conventional rocker arm systems. This superior design also allows for the use of four valves per cylinder, which exchange intake and exhaust gases more efficiently for responsive power and increased fuel economy.
Convenience and Control.
- Best-in-Class Charging Power: Yamaha F250 V6 – 25″ Shaft has up to 70 amps of total alternator output, our V6 4.2-liter outboards have over 29 percent more charging power than other V6 four strokes, and ample charging for an array of on-board electronic devices.
- Precise and Convenient Trolling: Our Yamaha F250 V6 – 25″ Shaft has a Variable Trolling RPM Switch (VTS®) allows you to adjust trolling speed from 600 ~ 1000 RPM, in 50-RPM increments, for consistent trolling speeds in any conditions.
- More Information / Security: Command Link Plus® features a 6-inch high-contrast, multi-engine, LCD or an-all new 7-inch touchscreen display; digital electronic controls; key switches and start/stop panels; and more flexibility and information than ever. Its optional Y-COP® theft-deterrent system disables the ignition and fuel systems while docked.
- Smooth Shifting: Our patented Shift Dampener System (SDS™) absorbs the resulting force of shifting gears, greatly reducing the noise commonly associated with shifting.
General Information.
| Prop shaft Horsepower | :250 hp |
| Full Throttle Operating Range | :5000 ~ 6000 rpm |
| Gear Ratio / Shift | :1.75:1 / Forward, Neutral, Reverse |
| Fuel Induction | :EFI |
| Alternator | :50 – 70 Amp |
Yamaha F250 V6 – 25″ Shaft Engine.
| Engine Type | :V6 |
| Bore x Stroke | :3.78 x 3.78 in. (96 x 96mm) |
| Displacement | :4.2L |
| Starting | :Electric |
Dimensions.
| Shaft Length | :25 in. |
| Weight | :551 lb. (250 kg) |
Model Specific Features.
- Perfect for offshore dual or center consoles, walkarounds, runabouts and pontoons, the 4.2-liter F250 allows you to step up your horsepower and displacement without replacing your rigging.
- Compatible with mechanical (25″ shaft) or digital controls
- Recommended fuel: 87 Octane
- Shaft lengths available: 25” and 30”
- Alternator output: Up to 70 amp
Yamaha F250 V6 – 25″ Shaft Specifications.
- Engine Type: V6
- Displacement: 4.2L
- Bore x Stroke: 96 x 96mm (3.78 x 3.78in)
- Prop Shaft Horsepower: 250hp at 5500 rpm
- Full Throttle RPM Range: 5000 ~ 6000 rpm
- Alternator Output at W.O.T.: 50 – 70 Amp
- Compression Ratio: 10.3:1
- Fuel Induction System: EFI
- Weight*: 250 kg (551 lbs)
- Fuel: Octane 87
- Engine Oil: Yamalube® 4M (See owner’s manual)
- Fuel Filtration: Yamaha 10-Micron Fuel / Water Separating Filter (external)
- C.A.R.B. Rating: 3-Star
- Exhaust: Through Propeller
- Intake: 24
- Ignition: TCI Microcomputer
- Spark Plug: LFR6A-11
- Alternator Output: 50 – 70 Amp
- Starting System: Electric
- Lubrication: Wet Sump
- Engine Oil Capacity: 6.3L/6.0L w/with filter
- Recommended Cooling: Thermostatic Control
- Ethanol Blend Limit: 10% Maximum
- Gear Ratio: 1.75:1
- Gear Shift: Forward, Neutral, Reverse
- Shaft Length: 25″
- Degree of Tilt: 67°
- Degree of Trim: -3° through +16°
- Dry Weight: 25″ shaft / 249 kg (551 lbs)
- Mounting Centers: 28.5″
- Steering Angle (maximum): 32° from center, either direction
Yamaha F250 V6 – 25″ Shaft Warranty.
| Pleasure | :3years Limited |
| Government | : 3years Limited |
| commercial | : 1year Limited |
Reach out to us if you want your Yamaha F250 V6 – 25″ Shaft customized.
Check out our Related Products
Reference @ Global Yamaha
Ed Loughran –
So far the motor is running well and started hitch-free. I have yet to test it in a real world water environment and will not be able to do that until spring, but in the test tank, the motor ran well. I was a little worried when the box showed up with some oil stains on it, but I believe those were on the outside and not anything leaking from the motor in the box. All I can say is that my experience so far with this website has been okay and I am hoping it will run will when I finally take it to saltwater.
Avid –
Bought this to push a Quintrex 670 Offshore Aluminium boat around Lake Powell. Ran it for 4 straight days almost none stop. Burned very little fuel and not a bit of trouble. Gets it up to about 5mph max.
We finally pushed it to it’s limit trying to go up the Colorado river. At the rivers narrowest point the water was flowing the same speed this motor could push us with no stress. Won’t be winning any races at about 2.1 mph max but again it pushed us all day without complaint.
If there is one con I would say it is the throttle. You go from idle to full speed in almost no twist. The rest of the rotation changes nothing.
Thank You Yamaha Marketplace, I would buy again without hesitation
Lance Crawford –
At this price point this outboard is great. I have had it now for about a month and have about 120 hours on it. You have to follow the break in instructions that are very easy. The motor started without any problem( after I added oil to the crankcase). I am using it on a Haines Hunter 650 Classic to go about 14 miles down a tidal river to gather shellfish and other explorations. HINT After the second hour of break in you can speed up the motor to full throttle for 5 minutes then relax that for awhile.
Check the security of the lower unit plugs too before you use it the first time.