Introducing the next-generation Yamaha F25 — now the lightest outboard in its class. Yamaha engineers have designed a truly portable 25-hp outboard. Strong, light and versatile, the powerful new F25 offers an impressive power-to-weight ratio that you can immediately feel out on the water.

- Engine Type
- Four stroke, In-Line 2-Cylinder
- Displacement
- 432 cc (26.4 ci)
- Bore
- 65mm
- Stroke
- 65.1mm
- Compression Ratio
- 9.3:1
- Engine Torque (rpm)
- 5000-6000
- Induction
- SOHC / 2 valves per cylinder
- Exhaust
- Through Propeller
- Cooling
- Raw water, Thermostatic Control
- Lubrication
- Wet sump
- Ignition
- CDI Micro-Computer
- Oil Type
- Yamalube 4-M FC-W 10W-30 or 20W-40
Electric:
- Alternator Output, Maximum
- 16 Amps
- Starter
- Electric (with manual back up) or manual
Drivetrain:
- Gear Shifter
- F/N/R
- Gear Ratio (Primary)
- 27/13 (2.08:1)
Fuel System:
- Fuel Injection
- Battery-less Electronic Fuel Injection
- Fuel Type
- Regular Unleaded (Minimum Pump Octane 87)
Dimensions:
- Length
- 20"
Capacities:
- Oil Capacity
- 1.1 L (1.2 US qt) — with filter
Weights:
- Dry Weight
- 57kg (126 lbs) - 65kg (143 lbs)
Features:
- Degree of Trim/Tilt
- Power Trim and Tilt or Manual with 2-position shallow drive