40/50/60 HP BigFoot

EFI Four-Stroke

Published in the August 2008 Issue Published online: Aug 26, 2008

Also last summer, Mercury introduced the new 40/50/60 HP BigFoot EFI Four-Stroke, designed with improved shifting, more thrust and greater durability for pontoon boats. This improved design provides easier shifting with less effort from the driver. The new models also allow for easy rigging and precise throttle resolution.

Mercury engineers implemented a new shift design that provides easier shifting. They refined the throttle resolution setting for smoother low speed operation. Plus, all the 40-60hp Four-Strokes feature new styling, graphics, a cowl latching system and much more.

The 40-60hp are available in both Standard and BigFoot gear case models. BigFoot models are perfect for pontoons and large boats, while the Standard models are ideal for aluminum fishing boats, bay boats and inflatables.

All 40-60hp Mercury BigFoot engines are electronically Fuel-Injected, which provides turn-key starting, increased power, improved fuel economy and spectacular reliability. Additionally, EFI engines run smoother and quieter and burn cleaner than carbureted engines.

BigFoot is built with a taller, more durable gear case that places the propeller deeper in the water. The lower position keeps the BigFoot prop below turbulent water, allowing it to operate in cleaner, less aerated water for dramatically improved performance.

It features a specially-designed, oversized, anti-ventilation plate that prevents surface air from being drawn into the prop, producing greater thrust.

V-bottom boats work well with traditional outboards because the hull leaves behind relatively undisturbed water to be grabbed effectively by the engine's prop. However, the twin tubes of a pontoon typically feed turbulent water toward the engine. The BigFoot's longer design and larger components overcome this challenge and deliver power when and where you need it.

According to Mercury, BigFoot's propeller has up to 20 percent more surface area than competitive props, providing more working surface for greater overall thrust, acceleration and maneuverability. BigFoot is equipped with larger gears and shafts (up to 33 percent larger than competitive gears) for greater reliability and durability.

60 EFI Four-Stroke Specifications

HP at prop: 60hp

kW at prop: 45 kW

Maximum RPM (WOT): 5,500-6000

Cylinder/configuration: 4 (in-line)

Displacement (CID/cc): 60.8/995

Bore and stroke: 2.56 inches by 2.95 inches

Cooling system: water-cooled with thermostat

Ignition system: ECM 555 digital inductive

Starting: Electric (turn key)

Gear ratio: 1.83:1

Gear shift: F-N-R

Steering: remote or tiller

Alternator amp: 18

Alternator watt: 223

Trim system: Power trim

Exhaust system: through prop

Lubrication system: integrated dry sump

Fuel/ethanol tolerance: 87 octane/up to 10 percent

Recommended oil: Mercury synthetic

blend 25W-40

Fuel induction system: 2-valve per cylinder,

single overhead cam (SOHC)

Shaft length: 20 inches

Dry weight: 247 pounds

Operator warning system: SmartCraft

Engine Guardian

Available propellers: consult current dealer

propeller guide

SmartCraft: Yes

CARB star rating: 3

Limited warranty: three-year non-declining

and three-year corrosion failure

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