Model-T25LWTC

Our 432-cc 25-hp portable outboard features a streamlined, portable design and class-leading power-to-weight. While it’s 25 percent lighter than its previous design, it still packs exciting features like battery-less EFI. Pull-start models can now take advantage of this feature, plus the system is designed with an automatic decompression device to require even less effort for manual starting.

Yamaha’s F25 is still the lightest 25-horsepower outboard on the water—two stroke or four stroke. Its portable design and class-leading power-to-weight mean 25 horses can boldly go where they’ve never gone before. Jons. 14-foot aluminum fishing boats. The bed of your truck.

Features:

• Color - Gray
• Shaft Length - 20”
• High-thrust
• Powerful 16-amp alternator
  

Optimal Operation

CDI Microcomputer Ignition monitors throttle position, engine speed and atmospheric conditions in order to precisely adjust ignition timing under all conditions for optimum ignition performance, ensuring smooth and reliable operation.

Engine Warning System

Protects the outboard with a range of functions including: overheat protection and low-oil-pressure warning (automatically reducing maximum RPM to 2000), over-rev protection, start-in-gear protection and shift-in prevention at open throttle.

Wet Sump

A pressurized oil delivery system incorporates a compact and durable oil pump to keep all of the moving parts of their SOHC systems lubricated and running smoothly for maximum reliability.

Corrosion Protection

Combined with our proprietary alloy (YDC-30), our exclusive Phaze Five™ electro-deposited, anti-corrosive paint system provides a tough, five-layer barrier against corrosion. This protection is standard on all Yamaha Portable outboards.

Weight †	57kg (126 lbs) - 65kg (143 lbs)
Full Throttle RPM Range	5000 - 6000
Fuel Induction System	EFI
Recommended Engine Oil	Yamalube® 4M (See owner's manual)
Engine Type	2 cyl
Displacement	432cc
Bore x Stroke	65 x 65.1mm / (2.56 x 2.56 in)
Prop Shaft Horsepower	25 hp at 5500 rpm
Alternator Output at W.O.T.	16 amp
Compression Ratio	9.3:1
Recommended Fuel	Octane 87
Recommended Fuel Filtration	Yamaha 10-Micron Fuel/Water Separating Filter (external)
C.A.R.B. Rating	2-Star
Exhaust	Through Propeller
Intake	4
Ignition	CDI Microcomputer
Spark Plug	DPR6EB-9
Starting System	Electric & Manual
Lubrication	Wet Sump
Engine Oil Capacity	1.1L/1.0L
Recommended Cooling	Thermostatic Control
Ethanol Blend Limit	10% Maximum
Gear Ratio	2.00:1
Gear Shift	Forward, Neutral, Reverse
Shaft Length	20"
Degree of Tilt	62° - 63°
Degree of Trim	-3° through +16°
Mounting Centers	N/A
Steering	Remote Control
Steering Angle (maximum)	45° from center, either direction
Warranty	Limited 3-year Pleasure, 3-year Government, 1-Year Commercial

 

Need help choosing your engine? Check out our Yamaha engine guide.