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Northern Lights M944W Engine Engine

The Northern Lights M944W is a 12.5 L 6-cylinder turbocharged engine rated at 1500 rpm, producing up to 200 kW. It powers generator sets from Northern Lights, including the M944. It holds 10 L (2.6 gal) of oil and 10 L (2.6 gal) of coolant.

Also known as: Northern Lights M944W

12.5 L
Displacement
6
Cylinders
1500 rpm
Rated speed
200 kW
Gross power

Engine specifications

Oil capacity10.0 L
Coolant capacity10.0 L
Displacement12.5 L
Cylinders6
AspirationTurbocharged
Rated speed1500 rpm
Gross power200 kW

Generator sets powered by this engine

1
Northern Lights M944

Common problems

3
  • Temperature gauge above 205° F (96° C)
    Fix: Shut off the engine immediately. Use the Trouble Shooting Guide on page 25 to isolate the cause of the overheat. Allow the engine to cool and then remove the cap slowly using protective clothing. Make repairs and restart after the temperature gauge registers below 200° F (94° C). Watch the temperature gauge regularly and turn off the unit if the temperature rises above 205° F (96° C). Repeat troubleshooting.
  • Engine oil consumption greater during break-in
    Fix: Oil consumption is greater during break-in as piston rings take time to seat. Break-In Oil Changes: Change engine oil and filter at 50 hours. Change oil and filter again at 100 hours (consult Lubricants section for oil recommendation).
  • Engine does not start after 3 consecutive 20-second cranks
    Fix: Remove the impeller from the seawater pump. This will prevent the muffler from fi lling with water and backfi lling the exhaust line and engine. Once the engine starts, shut if off immediately and reinstall the impeller. Restart and check the exhaust overboard outlet for gushes of water.

Compiled from service & troubleshooting documentation across every generator set that uses the Northern Lights M944W.

Maintenance schedule

ItemSpecCapacityPart #Interval
Air filterAir cleaner24-01201250 hr Amazon eBay
Fuel filter50/50 ethylene-glycol heavy-duty diesel engine coolant24-512012000 hr Amazon eBay $29.99
Oil filterSecondary fuel filter24-51201250 hr Amazon eBay $29.99
Beltalternator drive belt—500 hr find
Coolant50/50 ethylene-glycol heavy-duty diesel engine coolant3.0 gal.—2000 hr
Oil50/50 ethylene-glycol heavy-duty diesel engine coolant3.0 gal.—2000 hr

Pooled from every document that names this exact engine — confirm the interval and part number against your unit's serial number.

Common questions

What is the oil capacity of the Northern Lights M944W?

The Northern Lights M944W engine has an oil capacity of 10.0 liters.

What is the displacement of the Northern Lights M944W?

The Northern Lights M944W has a displacement of 12.5 liters with 6 cylinders.

Which generators use the Northern Lights M944W engine?

The Northern Lights M944W powers 1 generator set(s), including Northern Lights M944.

How often should you change the oil in the Northern Lights M944W?

The Northern Lights M944W oil change interval is every 2000 hours.

What is a common problem with the Northern Lights M944W engine?

A commonly reported issue on generators using the Northern Lights M944W is: Temperature gauge above 205° F (96° C). Fix: Shut off the engine immediately. Use the Trouble Shooting Guide on page 25 to isolate the cause of the overheat. Allow the engine to cool and then remove the cap slowly using protective clothing. Make repairs and restart after the temperature gauge registers below 200° F (94° C). Watch the temperature gauge regularly and turn off the unit if the temperature rises above 205° F (96° C). Repeat troubleshooting..