Mercury 40 HP LW Twostroke – We’ve taken a no-nonsense approach to the engineering department, and it shows. With valuable features like Variable-ratio oil injection to reduce oil consumption and provide smoke-free running.


Every engine in the Mercury EFI V6 TwoStroke and mid-range TwoStroke range is backed by an extensive 3+2=5 year warranty, as well as 3 year Corrosion Warranty. Plus we support this commitment with the largest Service Network that stretches across Australia and New Zealand.

Propshaft Rated Horsepower 40hp (29.4kw)
Max RPM at Full Throttle 5000-5700
Cylinder 3
Displacement  42.5 cu in (697cc)
Bore & Stroke (mm) 68mm x 64mm
Cooling System Water-cooled, w/thermostat
Ignition Modular CDI
Starting Manual or electric
Gear Ratio 1.85:1
Gear Shift F-N-R
Steering Tiller
Alternator System Standard electric Optional manual 11amp
Trim Positions Manual
Fuel Tank Separate 25litres
Weight 72kg
Shaft Length

15″ (M)
20″ (L)

Propeller Drive Splined rubber hub
Prop Selection (Pitch) 10″-14″
Induction System Loop-charged (3 carb)
Oil Injection Standard on electric Pre-mix on manual
SmartCraft Capabilities NO
Warranty** 3 + 2 = 5 years


 *Weight specification is based on the lightest version

**Warranty Conditions apply

For detailed specifications consult your Mercury Dealer