F25
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.
- Now available in new pearlescent white and matte brown*, in addition to Yamaha gray
- Only 126 pounds (15” shaft model)
- Available in 15” and 20” shaft lengths and in a High-Thrust design (T25)
- Powerful 16-amp alternator
- Variable Trolling RPM Switch (VTS®) accessible depending on rigging
- Select models, including 15-inch shafts, feature a shorter tiller with Power Trim & Tilt and a tilt-up feature for ease in small spaces
*New color options available in select models and subject to availability.
SPECIFICATIONS
- 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: 15" - 20"
- Degree of Tilt: 62° - 63°
- Degree of Trim: -3° through +16°
- Mounting Centers: N/A
- Steering:
- Steering Angle (maximum): 45° from center, either direction
- Warranty: Limited 3-year Pleasure, 3-year Government, 1-Year Commercial
*Weight refers to shortest shaft length, and is measured without motor oil, gearcase oil and propeller (except models 25 hp and under, which include a standard propeller). All Jet model weights include the jet pump assembly (weight estimated).
COMPATIBILITY
The 432-cc 25-hp portable is compatible with tiller and mechanical controls and a range of gauges and props to suit your preference for performance, control and the display of data. It also allows you to access our Variable Trolling RPM Switch (VTS®) depending on your rigging. Explore compatible components below and contact your dealer for rigging expertise.
Compatible Controls:
Mechanical Controls
Multi-Function Tiller Handle
Compatible Gauges:
Command Link and Analog Gauges
PERFORMANCE BULLETINS
- Boat Model: Alumacraft Escape 145 CS
- Engine: F25LA
- Bulletin: View
- Boat Model: Alumacraft Escape 145 Tiller
- Engine: F25LA
- Bulletin: View
- Boat Model: Outcast® 16 V
- Engine: F25LA
- Bulletin: View
- Boat Model: Polar Kraft® Outlander V 156 SC®
- Engine: F25LA
- Bulletin: View
- Boat Model: Polar Kraft® Sportsman MV 1585 SE®
- Engine: F25LA
- Bulletin: View
- Boat Model: Starcraft® 16 Patriot
- Engine: F25LC
- Bulletin: View
- Boat Model: Zodiac® 340 BayRunner
- Engine: F25LA
- Bulletin: View
FEATURES & BENEFITS
Power and Performance:
Efficient Power
Optimum Performance
Streamlined Intake
Responsive Acceleration
Convenience and Control:
Max Maneuverability
Easy Engine Flushing
Portability And Storage
RELIABILITY & DURABILITY
OPTIMAL OPERATION
A 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.