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Mercury 250 Optimax M2 Jet Drive |
Specifications
HP @ Impeller: 250 (186 kW)
Max RPM (WOT): 5150-5650
Cylinder/Configuration: V-6 (60 degree vee)
Displacement (CID/cc): 186/3047
Bore & Stroke (in): 3.63 x 3.00
Bore & Stroke (mm): 92.1 x 76.2
Fuel Induction System: 2-stage Direct fuel injection
Ignition System: PCM Digital Inductive
Alternator: 60 amp/756 watt (belt-driven)
Weight (lbs / kg): 434/197 (engine and pump)
Lubrication System: Electronically controlled, multi-point, variable ratio oil injection
Flush System: Standard
Cooling System: Self-draining
Starting: Computer-controlled, electric with auto-prime and turn-key
Operator Warning System: Engine Guardian - over-rev, overheat, low oil level, low battery voltage, oil system failure, water in fuel, low water pressure, engine sensor failure
SmartCraft: Yes
Pump Type: Mixed flow/high volume
Impeller Diameter (inches): 7.25
Impeller Diameter (millimeters): 184
Impeller Type: 4-blade progressive pitch stainless steel
Trim System: Adjustable plate
Gear Ratio: 1.15:1
Exhaust System: Tuned through-transom with dual mufflers, 3" outlets
Gear Shift: F-N-R with high thrust dual outlet reverse gate
CARB Star Rating: 2
Key Features
- PCM computer controlled starting offers optimum starting in all weather conditions. Most sophisticated system offered.
- Electronic multi-point direct fuel injection improves fuel economy up to 60% at cruise speeds, meets 2004 CARB exhaust emission standards, and eliminates smoke.
- Dual muffler through-transom exhaust with expansion chamber delivers unmatched quiet running for a more comfortable driving experience while enhancing engine performance.
- Self-draining cooling system eliminates worry about draining the cooling system after operating in cold temperatures. Reduces winterization costs.
- V6 power head offers a powerful, yet compact and efficient engine package with excellent overall performance.
- Hydro-Surge automatic weed clean-out system clears weeds and grass from the intake of the jet while keeping rocks and larger debris out without turning the engine off.
- This engine has a 2-star CARB rating.
Features & Benefits
- OptiMax direct fuel injection improves fuel economy up to 60% at cruise speeds, meets 2004 CARB exhaust emission standards, and eliminates smoke.
- Variable-ratio oil injection eliminates the hassle of pre-mixing oil with fuel and automatically provides extra oil during break-in.
- A 3-gallon (US) remote oil tank with a separate engine-mounted reserve tank provides maximum range. Variable ratio mixing reduces oil consumption.
- Multi-point oil injection delivers oil exactly where its needed to further minimize oil consumption.
- Large 7.25" diameter pump pushes more water through the pump for greater thrust, superior effeciency, maximum acceleration and ski towing capability.
- Rubber-isolated engine mounting system isolates engine vibrations to give you a smooth, comfortable ride and never requires adjustments or alignment.
- Mercury-exclusive, patented XK360 aluminum alloy and unique multi-step painting process supplies industry-leading corrosion protection.
- Unique, multi-step painting process includes chemical treatment, EDP and chrome epoxy primers and abrasion resistant acrylic paint baked to a hard, corrosion-resistant finish.
- Corrosion warranty includes an industry-exclusive, 3-year limited corrosion failure warranty.
- Stainless steel impeller with variable pitch provides superior propulsive efficiency, performance and durability.
- Large displacement engine allows lower engine RPM and reduces stress on internal engine components which increases reliability and durability.
- Optional shift and steering cable bellows seal out water and debris and improves cable life, especially in saltwater environments.
- Self-sacrificing aluminum anodes guard against the effects of galvanic corrosion in a saltwater environment.
- Low maintenance pump requires only annual lubrication maintenance on all pump bearings, no need to disassemble pump parts to change oil.
- Parts and service support provide the customer with better worldwide access to parts and service than any other marine engine manufacturer.
- Adjustable trim plate adjusts boat attitude to compensate for minor boat bottom variations.
- Computer controlled starting offers optimum starting in all weather conditions. Most sophisticated system offered.
- Propulsion Control Module (PCM) engine controller rivals current automotive engine technology and provides state-of-the-art computerized engine management capabilities.
- SmartCraft compatible engine allows for up-to-the-second engine gauge information and gives advanced warning of possible problems.
- Self-draining cooling system eliminates worry about draining the cooling system after operating in cold temperatures. Reduces winterization costs.
- Engine protection systems protects the engine from or warns operator of adverse engine conditions.
- Automatic bilge siphon system keeps your engine compartment dry whenever the engine is running, even when the electric bilge pump fails to operate.
- Dual muffler through-transom exhaust with expansion chamber delivers unmatched quiet running for a more comfortable driving experience while enhancing engine performance.
- V6 powerhead offers a powerful, yet compact and efficient engine package with excellent overall performance.
- Hydro-Surge automatic weed clean-out system clears weeds and grass from the intake of the jet while keeping rocks and larger debris out without turning the engine off.
- Fuel system auto-prime primes fuel system with electric pump, no primer bulb required.
- Charging system keeps battery fully charged for running all your on-board electrical equipment.
- High-thrust, dual outlet reverse gate provides unmatched reverse thrust for backing off trailers and maneuverability when backing up.
- Fully integrated, easy-to-use engine flush attachment helps keep cooling system clean from saltwater corrosion and debris.
- Optional weed rake removes weeds from all-purpose aluminum grate or stainless-steel rock grate and is not needed for jet drives fitted with the Hydro-Surge grate.
- Optional all-purpose aluminum grate works best in an environment with moderate weeds and rocks.
- Optional rock intake grate protects the jet drive when operating in areas where there is a greater chance of hitting rocks.
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