Jet FourStroke 65 EFI


Mercury Jet Outboards are designed with the power and the weight to cover any shallow-water jet boat application. Our FourStroke jet outboards are electronic fuel injected, with a range from 25 to 40 horsepower. Mercury’s jet-drive outboards are specifically designed to pilot boats in shallow waters where propeller-driven hulls are unable to operate. Because there is no lower unit extending below the hull, the jet drive permits passage over obstacles that would foul a propeller-driven outboard boat


Engine Specs

  • Engine type: Inline 4
  • Displacement (L) : 2.1
  • Bore & Stroke (in/mm) : 3.5 x 3.2″ / 90 x 81 mm
  • Fuel Induction System : Computer Controlled Multi-Port Electronic Fuel Injection (EFI)
  • Full Throttle RPM : 5000-6000
  • Ignition : SmartCraft ECM 70 Digital Inductive
  • Starting : Smart Start Electric
  • Alternator amp / Watt : 35 amp / 441 watt with water-cooled voltage regulator
  • Steering : Big Tiller , Dual Cable Mechanical , Hydraulic
  • Shaft Length : 20″ / 508 mm
  • Trim System : Power Tilt , Power Trim
  • Recommended Oil : Mercury FourStroke Oil 10W-30
  • Compatible with Smartcraft Digital Technology : Yes
  • Dry Weight * Lightest model available : 378 lbs / 171 kg
  • Gearcase Options : Jet Drive
  • Gearcase Ratio : 1.00:1
  • Recommended Fuel : Unleaded Regular 87 Octane Minimum (R+M/2) or 90 RON 10% Ethanol Maximum
  • Engine protection operator warning system: SmartCraft Engine Guardian
  • Cooling system : Water-cooled with thermostat
  • Gear shift: F-N-R
  • Exhaust system: Through jet
  • Color: Phantom Black


  • HP/Kw : 65 / 48


Standard Features

The Big Tiller.

The optional center-mounted Big Tiller offers optimal control. A longer tiller grip incorporates a convenient power trim switch, the shift lever is close at hand, and an optional digital troll control adjusts engine speed as low as 700 rpm in 10-rpm increments.

Jet Advantages.

Water is drawn into the unit through the intake grill by an impeller, driven directly by the engine driveshaft. The water is then forced at high pressure through an outlet nozzle, creating thrust that drives the boat forward. To obtain reverse, a gate lifts into position over the outlet re-directing the pressure stream in the opposite direction.