F2.5 Specifications

Engine TypeOne Cylinder
Displacement4.4 ci (72 cc)
Bore x Stroke54 x 31.5mm (2.13 x 1.24 in)
Prop Shaft Horsepower2.5 hp @ 5500 rpm
Compression Ratio8.8:1
Fuel InductionOverhead Valve
ExhaustAbove Propeller
Spark PlugCR6HSB-000-000
Alternator OutputN.A.
Starting SystemManual
Engine Oil Capacity0.35L(0.37qt)
Full Throttle RPM Range5250 ~ 5750 rpm
CoolingWater/Thermostatic Control
Recommended Engine OilYamalube® 4M (See Owner’s Manual)
Recommended FuelRegular Unleaded (Minimum Pump Octane 87)
Recommended Fuel FiltrationYamaha Mini 10-Micron Fuel/Water Separating Filter (external)
Gear Ratio2.01:1
Gear ShiftForward, Neutral
Shaft LengthS=15″, L=20″
Degree of Tilt79°
Degree of Trim4 positions
C.A.R.B. Rating3-Star
Dry WeightF2.5SMHB = 17kg (37 lbs), F2.5LMHB = 18kg (40 lbs)
Steering Angle (maximum)360° from center, either direction
Warranty3 Year Limited Pleasure Boat – 1 Year Limited Commercial
Spec Weight7