Smooth and Strong Performance.
A compact, single-overhead-cam design and long piston stroke give Mercury 40 – 60hp FourStroke outboards more low-end torque for excellent acceleration, even when pushing a heavy load.
The high-displacement, long-stroke, four-cylinder, single-overhead cam design provides optimum power and a smooth ride with Command Thrust models.
Thumbscrew Clamp Bracket.
The 40hp manual start, long shaft (20″ / 508mm), tiller steer model is also available with a thumbscrew mounting bracket. This bracket reduces the time and effort needed to install or remove the outboard from a boat’s transom.
More Control, Hole Shot and Mid-Range Power.
Increased thrust is delivered by a 2.33:1 gear ratio with 44% larger gears. The desmodromic shifting is ultra-smooth.
A gearcase that sits deeper in the water, a bigger prop with 20% more blade surface, and lower gear ratio provide unmatched thrust, maneuverability and boat lift.
|HP / kW|
|Full throttle RPM|
|Fuel induction system|
|Alternator amp / Watt|
|Engine protection operator warning system|
|Compatible with SmartCraft digital technology|
|Dry weight *Lightest model available|
|CARB star rating|
|Bore and stroke|
|Shallow water trim range (degrees)|
|Remote fuel tank (optional)|