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Auckland Marine Centre New Zealand 321 Ti Rakau Drive Burswood, Auckland 2013 NZ
Auckland Marine Centre New Zealand 321 Ti Rakau Drive Burswood, Auckland 2013 NZ
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Mercury 40 HP Fourstroke

The 40-60hp Mercury EFI engines are Electronically Fuel-Injected, which provides turn-key starting, increased power, improved fuel economy, and spectacular reliability.

Key Specifications — Mercury 2025 40 HP FourStroke (EFI)

Spec Value
Horsepower / Kilowatts 40 hp / ~30 kW
Engine type Inline‑3, FourStroke 
Displacement 45.6 cubic inches / 747 cc 
Full throttle RPM range 5,500‑6,000 rpm
Fuel induction system 2 valves per cylinder, Single Overhead Cam (SOHC)
Alternator output 18‑amp / ~226 watt 
Recommended fuel 87 octane / up to 10% ethanol
Recommended oil Mercury FourStroke 25W‑40 (Marine Oil) 
Dry (minimum) weight ~204 lbs / ~93 kg
Shaft length options 15 in (381 mm) or 20 in (508 mm)
Gearcase ratio ~2.00:1
Ignition ECM‑70 digital electronic ignition 
Trim / tilt options Gas assist, power tilt, power trim available depending on setup 
Emissions / rating CARB Star Rating 3 (or equivalent) 

Specification

Horse Power (hp)
  • 40