100 HP EFI CT Fourstroke

Powerful & Efficient

Less weight and high displacement mean Mercury’s new 75 – 115 FourStrokes generate abundant torque and immediate power. Because they don’t have to work as hard as heavier engines or those with lower displacement, these engines make boats plane faster, accelerate better and provide optimal fuel efficiency at cruising speed.

Bigger Footprint

The larger Command Thrust gearcase creates a bigger footprint in the water, which provides more leverage to control your boat. The larger torpedo, combined with a bigger-diameter prop, can lift a heavy boat onto plane more easily and hold it there at lower speeds without impacting top speed.

Worry-free

The same lifetime maintenance-free valvetrain design found in our 150 FourStroke engines makes the 75-115hp FourStroke outboards incredibly durable.

HP / kW : 100 / 75

Engine type : Inline 4

Displacement (L) : 2.1

Full throttle : RPM 5000-6000

Fuel induction system : Computer Controlled Multi-Port Electronic Fuel Injection (EFI)

Alternator amp / Watt : 35 amp / 441 watt with water-cooled voltage regulator

Recommended fuel : Unleaded Regular 87 Octane Minimum (R+M/2) or 90 RON 10% Ethanol Maximum

Recommended oil : Mercury FourStroke Oil 10W-30

Engine protection operator warning system : SmartCraft Engine Guardian

Compatible with SmartCraft digital technology : Yes

Starting : Smart Start Electric

Steering : Big Tiller Compatible, Dual Cable Mechanical, Hydraulic power steering

Shaft length : 20″ / 508 mm 25″ / 635 mm

Gearcase ratio : 2.38:1

Dry weight *Lightest model available : 364 lbs / 165 kg

Emissions Star Rating : 3

Bore and stroke : 3.5 x 3.2″ / 90 x 81 mm

Ignition : SmartCraft ECM 70 Digital Inductive

Fuel system : Electronic Fuel Injection (EFI)

Cooling system : Water-cooled with thermostat

Gear shift : F-N-R

Gearcase options : Command Thrust

Trim system : Power Tilt, Power Trim

Exhaust system : Through prop

Shallow water trim range (degrees) : 20

Color : Phantom Black