Smith's RV Centre

Lightweight Power With No Sacrifices

No Direct Injected engine has more experience, testing or success under its belt than Mercury OptiMax. It's not surprising that OptiMax repeatedly led every DI category, including power, fuel efficiency, reliability and versatility. It all adds up to a complete line of power that delivers more and delivers it better. OptiMax remains the best value on the water and a top choice of boaters.

Standards

 Features

• BEST-IN-CLASS FUEL EFFICIENCY
  The innovative OptiMax DI system delivers the ultimate in efficiency, squeezing more miles and performance from every drop of fuel. 
• LIGHTWEIGHT, COMPACT DESIGNS
  OptiMax boasts an outstanding power-to-weight ratio, contributing to increased speed and better fuel efficiency. It's a great engine for any type of boat. 
• INDUSTRY-LEADING CORROSION RESISTANCE
  OptiMax is built salt water tough with more stainless steel and corrosion resistant components.  
• SMART FEATURES FOR EASY BOATING
  OptiMax is controlled by the innovative Motorola® Propulsion Control Module (PCM) and is loaded with "smart" features that make boating more enjoyable, such as SmartCraft and Engine Guardian. 

• PROVEN GEARCASE AND HYDRODYNAMICS
  No marine engine company has more knowledge about hydrodynamics and gearcase design. Reliability, pleasing performance, comfortable handling and unbeatable speed make it the top choice in DI engines. 
• A LEGACY OF LEADERSHIP
  OptiMax is the best-selling DI outboard on the market and ranks among the marine world's best values

Mercury OptiMax Outboards

75HP

90HP

115HP

HP @ Prop

75

90

115

kW @ Prop

55.1

66.2

84.5

Max RPM (WOT)

5000-5750

5000-5750

5000-5750

Cylinders

3 (in-line)

3 (in-line)

3 (in-line)

Displacement (CID/cc)

92.96/1526

92.96/1526

92.96/1526

Bore & Stroke (in)

3.63 x 3.0

3.36 x 3.0

3.36 x 3.0

Bore & Stroke (mm)

92 x 76

92 x 76

92 x 76

Cooling System

Water-cooled w/thermostat & pressure control

Water-cooled w/thermostat & pressure control

Water-cooled w/thermostat & pressure control

Ignition System

PCM 07

PCM 07

PCM

Starting

Electric

Electric

Electric

Gear Ratio

2.33:1

2.33:1

2.07:1

Gear Shift

F-N-R

F-N-R

F-N-R

Steering

Remote

Remote

Remote

Alternator

60-amp/756 watt belt driven

60-amp/756 watt belt driven

60-amp/756 watt belt driven

Trim System

power trim

power trim

power trim

Exhaust System

Through prop

Through prop

Through prop

Lubrication System

Electronic multipoint oil injection

Electric multipoint oil injection

Electric multipoint oil injection

Recommended Oil

Mercury OptiMax/DFI engine oil

Mercury OptiMax/DFI engine oil

Mercury OptiMax/DFI engine oil

Fuel Induction System

2-stage direct fuel injection

2-stage direct fuel injection

2-stage direct fuel injection

Shaft Length (inches)

20

20/25

20/25

Shaft Length (mm)

508

508/635

508/635

Dry Weight (lbs.)

375

375

375

Dry Weight (kg)

170

170

170

SmartCraft

Yes

Yes

Yes

CARB Star Rating

3

3

3

Warranty

3 years

3 years

3