Mercury 40 HP EFI - Mercury FourStrokes have long led the pack in clean, quiet, fuel-efficient outboard power - and now the gap grows even wider. We combined innovative engineering with advanced reliability and features to make our outboards run clean, stay quiet, and deliver smooth, responsive performance - all while cutting your fuel and maintenance costs.

HP / kW	40 / 30
Engine type	Inline 3
Displacement (CID/CC)	45.6 / 747
Full throttle RPM	5500-6000
Fuel induction system	2 valves per cylinder, single overhead cam (SOHC)
Alternator amp / Watt	18 amp / 226 watt
Recommended fuel	87% octane / up to 10% ethanol
Recommended oil	Mercury FourStroke 25W40 Marine Oil
Engine protection operator warning system	Low oil pressure Over-rev Overheat
Compatible with SmartCraft digital technology	Yes
Starting	Electric (turn-key)
Steering	Big Tiller Compatible Remote Tiller Kit
Shaft length	15" / 381 mm 20" / 508 mm
Gearcase ratio	2.00:1
Dry weight *Lightest model available	216 lbs / 98 kg
Emissions Star Rating	3
Bore and stroke	2.56 x 2.95" / 65 x 75 mm
Ignition	ECM 70
Fuel system	Electronic Fuel Injection (EFI)
Cooling system	Water-cooled with thermostat
Gear shift	F-N-R
Gearcase options	Standard
Trim system	Gas assist Power Tilt Power Trim
Exhaust system	Through prop
Shallow water trim range (degrees)	20
Remote fuel tank (optional)	Yes
Color	Phantom Black

1992 DETROIT DIESEL Marine Engine TAB-ID 104438