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1999 Mercury V-6 OptiMax Outboards

Flagships of the Mercury outboard lineup, the revolutionary OptiMax models have taken the marine world by storm. These technologically advanced outboards offer dependable turnkey starts, smoke-free operation, smooth-running qualities and an astounding 45 percent better-than-average fuel economy. All without compromising performance.

The heart of the OptiMax system is a unique two-stage fuel induction system which uses a burst of compressed air to completely stratify the fuel charge upon injection directly into the top of the cylinder. This unique system gives OptiMax a 10 percent advantage in fuel economy over any other direct injected outboard on the market and translates into big savings for the lucky boater who chooses OptiMax as his power source.


Mercury V-6 OptiMax outboards are available in 225-, 200-, 150-, and 135-hp.

All V-6 OptiMax models feature:

  • Compact 60 degree V-6 cylinder configuration
  • Water cooled with thermostat and pressure controlled
  • Electric turnkey starting
  • F-N-R gear shift
  • Remote steering
  • Power trim and tilt
  • Flo-Torq II propeller drive
  • Direct fuel injection
  • Through prop exhaust
  • Computer controlled electronic multi-port variable ratio oil injection
  • Run on unleaded 87 minimum octane fuel
  • 60 amp (846 watt) belt driven alternator system with voltage regulator
  • Extensive engine protection system alerts operator of overheat, low oil, water in fuel, and check engine in order to avoid any potential engine damaging conditions
  • Digital inductive ignition system
  • RPM stability under all conditions
  • Ultra crisp throttle response
  • Extremely slow, stable idle quality
  • Complies with EPA requirements to the year 2006
  • Engines built with world class partners including Motorola, Siemens, and Orbital Engine Technology

Mercury 135-hp V-6 OptiMax Outboard Specifications

  • Propshaft Horsepower: 135-hp (101 kW)
  • Max RPM (W.O.T.): 5000-5600
  • Cylinders/Configuration: 60 degree V-6
  • Displacement: 153 cu.in. (2507cc)
  • Bore & Stroke: 3.5 in. x 2.65 in. (89mm x 67mm)
  • Fuel Induction System: Direct Fuel Injection
  • Exhaust System: Through Prop
  • Lubrication System: Electronic multi-point variable ratio oil injection
  • Cooling System: Water cooled with thermostat and pressure controlled
  • Ignition System: Digital Inductive
  • Starting System: Electric (turnkey)
  • Alternator: Belt-driven 60 amp (846 watt) with voltage regulator
  • Gear Ratio: 2.0:1
  • Gear Shift: F-N-R
  • Steering: Remote
  • Trim System: Power Trim
  • Shaft Length: 20 in. (508mm)
  • Weight: 440 lbs. (200 kg)
  • Operator Warning Systems: Overheat, low oil level, water in fuel, check engine
  • Propeller Options: Black Max, Vengeance, Laser II,
    Mirage Plus, Tempest Plus, Trophy Plus, High Five,
    Offshore P.S., Black Diamond, Silverado,
    Lightspeed, Thunderbolt
More practical than a wedding ring!

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