M773LW3 Marine Generator - 9 kW / 7kW

M773LW3 Marine Generator - 9 kW / 7kW

M773LW3 Marine Generator - 9 kW / 7kW

M773LW3 Northern Lights 9kW Generator. 9 kW (60Hz) / 7 kW (50Hz). Engineered to deliver power at quiet, long lasting 1800 rpm. Driven by high-torque, 69 cubic inch Lugger diesel, fitted with powerful W-Series generator end, the M773LW3 starts electric motors with ease. See specs below.

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MFG#: M773LW3

M773LW3

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M773LW3 Marine Generator

*M773LW3 sound enclosure available.

The M773LW3 incorporates the best Northern Lights features into one compact and versatile package. It meets growing onboard power demands without asking for a lot of engine room space.

The M773LW3 was engineered to deliver its power at a quiet, long lasting 1800 rpm. Driven by a high-torque, 69 cubic inch, Lugger diesel and fitted with a powerful W-Series generator end, the M773LW3 has the power to start electric motors with ease.

The M773LW3 features single-side service, which means it can be mounted with the non-service side facing a bulkhead without compromising routine service access.

Other proven systems are utilized throughout. The DC system has simple relays, instead of a printed circuit board, for quick, inexpensive field repairs. Low oil pressure, high coolant temperature and high exhaust temperature safety shutdowns are standard.

An automatic voltage regulator keeps voltage to within ±1%. Vibration isolating platform mounts, gleaming white polyurethane paint and a plug-in wire harness complete the package.


Engine Block

  • Four cycle, 3 cylinder, liquid cooled, naturally aspirated, overhead valve diesel.
  • Swirl combustion chambers improve fuel efficiency and reduce smoke.
  • Glow plugs for quick cold starting.


Cooling System

  • Freshwater cooling system in heat exchanger or keel cooled configuration.
  • One-piece heat exchanger, expansion tank and liquid cooled exhaust manifold. Fewer troublesome hoses and gaskets. Cast iron to resist corrosion and electrolysis.
  • Heat exchanger cooling is standard. Cupro-nickel, tube-type heat exchanger has removable ends for easy cleaning. Rubber impeller seawater pump of bronze and stainless steel is gear driven; no belt.


Fuel System

  • Fuel system is self-venting.
  • Injection pump with 5% mechanical governor for close AC frequency control.
  • Pintle injectors with replaceable tips.
  • Mechanical lift pump with hand primer. No electric pump to fail.
  • Large spin-on fuel filter.
  • Flexible fuel lines routed to fuel manifold.
  • Stop solenoid controls the fuel rack, not the throttle, to eliminate speed variances and linkage problems.


Intake and Exhaust

  • Meets US EPA Tier III emission standards at date of manufacture.
  • Washable air cleaner in cast intake manifold reduces noise.
  • Cast iron, wet exhaust elbow for safety.


Lubrication System

  • Full flow, spin-on oil filter with bypass.
  • 4.2 qt (4 ltr) oil capacity for better lubrication. 200 hour oil change intervals.
  • Oil drain for quick, clean oil changes.
  • Closed crankcase vent system traps oil vapor and keeps engine room clean.

 

DC Electrical System

  • DC system uses reliable relays instead of an unrepairable printed circuit board.
  • 12 volt starter motor and battery charging alternator with regulator and belt guard.
  • Standard panel: Remote mount S-1B has hour meter, stop-start switch with run light and preheat switch.
  • Expandable to six panels up to 110 feet from the set.
  • 20 foot (6m) plug-in panel harness lets you mount your panel anywhere onboard. Better than inaccessible unit mount panels that are prone to vibration problems.
  • Low oil pressure, high coolant temp and high exhaust temp safety shutdowns standard.


AC Generator

  • Northern Lights, direct coupled, brushless AC generator is maintenance free. 4 lead, 1 phase, 50 or 60 Hz output standard. 12 lead, 3 phase optional. Conservative heat rise rating: 95oC/50oC ambient.
  • Automatic voltage regulator (AVR) is powered by dedicated AC winding for true 300% short circuit capability and circuit breaker protection. Quick ±1% RMS no load to full load voltage regulation.
  • Generator features high quality, Class “H” epoxy insulation, accessible diodes, over-sized bearings and junction box for wiring.

Special Equipment

  • Welded steel base frame with drip pan.
  • Four plateform mounts isolate vibration.
  • White, long-life polyurethane paint.
  • Operator’s and parts manuals standard.

M773LW3 Marine Generator Specifications

M773LW3 Specifications:
60 Hz @ 1800 rpm9 Kw
50 Hz @ 1500 rpm7 Kw
Cylinders:3 inline
Bore:3.0 in (77 mm)
Stroke:3.2 in (81 mm)
Displacement:69 cid (1.13 ltr)
Fuel System:Mechanical
Aspiration:Natural
Length:35 in (889 mm)
Length with Enclosure:35 in (889 mm)
Width:22.0 in (559 mm)
Width with Enclosure:22.0 in (559 mm)
Height:23.8 in (604 mm)
Height with Enclosure:24.2 in (614 mm)
Weight:537 lbs (224 kg)
Weight with Enclosure:597 lbs (271 kg)

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