Jets

FourStroke Jet Outboards 25 - 40 HP

Overview
Specifications
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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.

Operation

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.

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25 HP
40 HP

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25 EFI Jet FourStroke Specifications

HP/Kw @ Prop	25 / 18.4
Full throttle RPM	5000-5500
Cylinder Configuration	3 (in-line)
Displacement (L / CID)	32.1 / 526
Bore and Stroke (in / mm)	2.40 x 2.36in 61 x 60mm
Fuel Induction System	2 valve single overhead cam (SOHC)
Ignition	CDI w/electronic spark advance
Fuel System	Electronic Fuel Injection (EFI)
Alternator Amp	15 amp / 186 watt (Electric)
Starting	Electric (turn-key) Manual
Gearcase Options	Jet
Steering	Remote Tiller
Trim System	Gas assist Power Trim
Recommended Oil	Mercury 4-Stroke Outboard Oil
Shaft Length	20
Dry Weight * Lightest model available	186lbs / 84kg

HP/Kw @ Prop	40 / 29
Full throttle RPM	5000-5500
Cylinder Configuration	4 (in-line)
Displacement (L / CID)	60.8 / 995
Bore and Stroke (in / mm)	2.56 x 2.95in 65 x 75mm
Fuel Induction System	2 valve single overhead cam (SOHC)
Ignition	ECM 555 Digital Inductive
Fuel System	Electronic Fuel Injection (EFI)
Alternator Amp	18 amp / 226 watt (Electric)
Starting	Electric (turn-key)
Gearcase Options	Jet
Steering	Big Tiller Compatible Remote Tiller Kit
Trim System	Power Trim
Recommended Oil	Mercury 4-Stroke Outboard Oil
Fuel Ethanol Tolerance	87% octane / up to 10% ethanol
Compatible with Smartcraft Digital Technology	Yes
Shaft Length	15
Dry Weight * Lightest model available	267lbs / 121kg

FourStroke Jet Maintenance & Storage

FourStroke Manuals

The complete line of FourStroke manuals – including owner's manuals, service manuals, and more – is available for purchase online.

Purchase OptiMax Owners Manual

FourStroke Jet Boat Brands

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