M673L3 Marine Generator - 6 kW / 5 kW

M673L3 Marine Generator - 6 kW / 5 kW

M673L3 Marine Generator - 6 kW / 5 kW

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Northern Lights 6kW Generator - M673L3. 6 kW (60Hz) / 5 kW (50Hz). 1800 RPM = quiet, smooth operation, less stress on engine, longer generator life. Freshwater cooling system, corrosion proof design. Specs below. *2nd & 3rd image shown w/ M673L3 sound enclosure. Sold separately.

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M673L3 Northern Lights Generator

*Shown here with the M673L3 Sound Enclosure.

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 with siphon break.
• Heat exchanger or keel cooled.
• 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.
• Steel fuel lines.
• Stop solenoid acts directly on the fuel rack eliminating linkage problems.

Intake and Exhaust

• Meets US EPA Tier III emission standards.
• Washable air cleaner.
• Cast aluminum intake manifold with Sound Maze air intake reduces intake noise.
• Cast iron, wet exhaust elbow for safety.

Lubrication System

• Full flow, spin-on oil filter with bypass.
• 3.1 qt (3 ltr) oil capacity for better lubrication and 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, four pole, revolving field, four lead reconnectable generator with Class “H” insulation and prelubricated bearing. Conservative heat rise rating: 95°C/50°C ambient .
• External automatic voltage regulator gives you ±5% voltage regulation. AVR powered by dedicated AC winding for improved motor starting. AVR circuit breaker.
• 30 amp mainline

Northern Lights M673L3 Specifications


M673L3 Specifications:
60 Hz @ 1800 rpm6 Kw
50 Hz @ 1500 rpm5 Kw
Cylinders:3 inline
Bore:2.6 in (67 mm)
Stroke:2.8 in (72 mm)
Displacement:46.4 cid (0.76 ltr)
Fuel System:Mechanical
Length:28.5 in (724 mm)
Length with Enclosure:28.5 in (724 mm)
Width:19.5 in (495 mm)
Width with Enclosure:19.5 in (495 mm)
Height:20.4 in (517 mm)
Height with Enclosure:20.8 in (528 mm)
Weight:377 lbs (171 kg)
Enclosure Weight44 lbs (20 kg)
Information, specifications, materials and dimensions subject to change without notice.
 Note: US EPA Marine Certified Tier 3 are available globally