Yamaha Portable F2.5 Four Stroke

Print Full Specs

Engine TypeOne Cylinder  
Displacement4.4 ci (72 cc)  
Bore x Stroke54 x 31.5mm (2.13 x 1.24 in)  
Compression Ratio9.0:1  
Prop Shaft Horsepower2.5 hp @ 5500 rpm  
Full Throttle RPM Range5250 ~ 5750 rpm  
Fuel InductionOverhead Valve  
ExhaustAbove Prop  
CoolingWater/Thermostatic Control  
Spark PlugB6HS0-00-00-000  
Alternator OutputN.A.  
Starting SystemManual  
Engine Oil Capacity0.4L(0.42qt)  
Recommended Engine OilYamalube® 4M (See Owner's Manual)  
Recommended Fuel FiltrationYamaha Mini 10-Micron Fuel/Water Separating Filter (external)  
Recommended FuelRegular Unleaded (Minimum Pump Octane 87)  
Gear Ratio(27:13) 2.08:1  
Gear ShiftForward, Neutral  
Shaft LengthS=15"  
Degree of Tilt80°  
Degree of Trim4 positions  
C.A.R.B. Rating2-Star  
Dry Weight17kg (37 lbs)  
Steering Angle (maximum)360° from center, either direction  
Warranty3 Year Limited Pleasure Boat