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Engine Type | One Cylinder |
Displacement | 8.5 ci (139 cc) |
Bore x Stroke | 62 x 46mm (2.44 x 1.81 in) |
Prop Shaft Horsepower | 4hp at 4500 rpm |
Compression Ratio | 8.9:1 |
Fuel/Induction System | OHV |
Exhaust | Above Propeller |
Intake | Carburetor |
Ignition System | CDI |
Spark Plug | CR6HSB-000-000 |
Alternator Output | 6 Amp (Optional: Requires Charging Kit |
Starting System | Manual |
Lubrication | Wet Sump |
Engine Oil Capacity | .6L (.63 qt) |
Full Throttle RPM Range | 4000-5000 |
Cooling | Water/Thermostatic Control |
Recommended Engine Oil | Yamalube® 4M (See owner's manual) |
Recommended Fuel | Regular Unleaded (Minimum Pump Octane 87) |
Recommended Fuel Filtration | Yamaha Mini 10-Micron Fuel/Water Separating Filter (external) |
Ethanol Blend Limit | 10% Maximum |
Gear Ratio | (27:13) 2.08:1 |
Gear Shift | Forward, Neutral, Reverse |
Shaft Length | S=15" L=20" |
Degree of Tilt | 69° |
Degree of Trim | 5 positions |
C.A.R.B. Rating | 3-Star |
Dry Weight | F4SMHA = 27kg (60 lbs), F4LMHA = 28kg (62 lbs) |
Steering Angle (maximum) | 90° from center, either direction |
Warranty | 3-year Pleasure, 3-year Government, 1-year Commercial |
Spec Weight | 6 |