
4hp
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Type
25 - 2.5HP -
Disp.
139cc -
Weight*
lbs -
Power
4hp
4hp Specs
Engine Type: 1 cyl.
Displacement: 139cc
Bore x Stroke: 62 x 46mm (2.44 x 1.81in)
Prop Shaft Horsepower: 4hp at 4500 RPM
Full Throttle RPM Range: 4000 - 5000 RPM
Alternator Output at W.O.T.: 6 Amp
Compression Ratio: 8.9:1
Fuel Induction System: Carb
Weight*: 27 kg (59 lbs) - 28 kg (61 lbs)
Recommended Fuel: Octane 87
Recommended Engine Oil: Yamalube® 4M (See owner's manual)
Recommended Fuel Filtration: N/A
Warranty: Limited 3-year Pleasure, 3-year Government, 1-Year Commercial
About the 4hp
The XTO Offshore® is the result of years of collaboration with top boat designers, and has been built from the ground up to provide the ultimate in power and efficiency offshore. With impressive stats such as the highest compression ratio on the water, industry firsts such as an electric steering system, and engineering touches such as iridium spark plugs and quad thermostats, it’s purpose-built for extreme power, durability, control and reliability.
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Available in signature Yamaha gray or new pearlescent white
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425 hp on less-expensive 89-octane gasoline
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Available with Helm Master® with SetPoint™
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Impressive 5-year Limited Warranty, for pleasure use