Tel: +1(284)494-2830

Tel: +1(284)494-2830

M20CRW3: 20 kW @ 1800rpm

  • Swirl combustion design improves fuel efficiency, reduces smoke and noise.
  • Quick cold starting.
  • Self-venting fuel system.
  • Reliable DC system.
  • One-piece heat exchanger housing.


Northern Lights M20CRW3

Product Details

A marine generator which cuts down on smoke, noise and heat output, as well as technical difficulty while still providing top quality.

Engine Block

  • Four cycle, 4 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

  • Jacket-water cooling system in heat exchanger or keel cooled configuration.
  • One-piece heat exchanger housing, expansion tank and liquid cooled exhaust manifold. Fewer troublesome hoses and gaskets. Cast iron to resist corrosion and electrolysis.
  • Keel cooling configuration is standard.
  • Heat exchanger cooling is optional. Cupronickel, tube-type heat exchanger element can be removed for easy cleaning. Easily accessible, rubber impeller seawater pump of bronze and stainless steel is gear driven; no pump drive belts to fail. Cast-iron wet exhaust elbow is included.

AC Generator

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

Intake and Exhaust

  • Meets US EPA Tier II emission requirements for a cleaner environment.
  • Disposable dry air cleaner.
  • 1 1/2 inch NPT exhaust outlet.

Lubrication System

  • Full flow, spin-on oil filter.
  • 8.6 qt. (8.2 ltr) oil capacity for better lubrication. 200 hr oil change intervals.
  • Oil drain for quick, clean oil changes.
  • Closed Crankcase vent system keeps oil vapor inside engine for clean engine room.

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.
  • Stop solenoid controls the fuel rack, not throttle, to eliminate speed variance and linkage problems.

DC Electrical System

  • DC system uses reliable relays instead of unrepairable printed circuit boards.
  • 12 volt starter motor and battery charging alternator with regulator and belt guard.
  • Standard panel: Remote mount S-3C has hour and volt meters, oil pressure and coolant temperature gauges, stop-start switch and preheat switch.
  • 20 foot (6 m) plug-in panel harness lets you mount your panel anywhere on board. DC system is expandable to six panels up to 110 feet from the set.
  • Low oil pressure, and high coolant temperature shutdowns are standard.

Special Equipment

  • Rigid, welded steel base frame.
  • Four platform mounts isolate vibration.
  • Tough grey enamel paint for long life finish.
  • Operator’s and parts manuals standard.

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PO Box 850
Road Town, Tortola
British Virgin Islands, VG1110

Tel: 284 494-2830
Fax: 284 494-6972


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