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Home›Northern Lights›Northern Lights M944

Northern Lights M944 Generator Set

The Northern Lights M944 is a 30 kW (37.5 kVA) diesel standby generator set powered by a Northern Lights 944 engine block engine. It is available at 120/240 V and 220 V, 1-phase, 60 Hz and rated 125 A. It holds about 10 L (2.6 gal) of oil. Starting uses battery rated 640 CCA at 12 V. The set measures 1422×737×779 mm (56.0×29.0×30.7 in) and weighs about 613 kg (1351 lb).

30 kW
Standby
10.0 L
Oil capacity
5
Document types

Specifications

Fueldiesel
Frequency60.0 Hz
Standby power30 kW
Standby kVA37
Prime power26 kW
EmissionsTier II
Oil capacity10.0 L
AlternatorPX-332K2
Voltage options12 V, 24 V
Phase1 & 3
Rated current[125, 250] A
Power factor1.0
Battery cranking640 CCA
Battery voltage12 V
Dimensions (L×W×H)1422×737×779 mm
Dry weight657 kg

Engine

Northern Lights 944 engine block

Maintenance & consumables

for the Northern Lights 944 engine block
ItemSpecCapacityPart #Interval
Fuel filterFull flow, spin-on fuel filter— find
BeltGear driven seawater pump, DC control plug is durable and reliable— find
CoolantStandard heat exchanger cooling with optional keel cooling. Copper-nickel, tube-type heat exchanger has removable end caps for easy cleaning. Electrolysis protection via zinc anode.—
Oil—250 hr

Common questions

What is the power rating of the Northern Lights M944?

The Northern Lights M944 is rated 30 kW standby (37.5 kVA).

What engine does the Northern Lights M944 use?

The Northern Lights M944 is powered by the Northern Lights 944 engine block engine.

What fuel does the Northern Lights M944 use?

The Northern Lights M944 runs on diesel.

What alternator does the Northern Lights M944 use?

The Northern Lights M944 uses a PX-332K2 alternator.

Troubleshooting

3

Symptoms & remedies

SymptomRemedy
Temperature gauge above 205° F (96° C)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-inOil 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 cranksRemove 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.

Fault codes and symptom→remedy steps extracted from this model’s service/owner documentation; verify against the official manual before servicing.

Parts

43
Part #DescriptionQtySystem
05-01260Sound EnclosureSound enclosure PartsGeek
05-71250Sound EnclosureSound enclosure PartsGeek
06-73100Sound EnclosureSound enclosure PartsGeek
06-78000Sound EnclosureSound enclosure PartsGeek
06-78100Sound EnclosureSound enclosure PartsGeek
06-78600Sound EnclosureSound enclosure PartsGeek
06-78700Sound EnclosureSound enclosure PartsGeek
15.7DRIP PAN DRAIN 1/4" NPT.6Drain PartsGeek
20.3CRANK CASE OIL FILTER.8Oil filter PartsGeek
22-45600Circuit Breaker 100 ft.Circuit breaker PartsGeek
22-45601Y HarnessY harness PartsGeek
22-45610Circuit Breaker 10 ft.Circuit breaker PartsGeek
22-45620Circuit Breaker 20 ft.Circuit breaker PartsGeek
22-45630Circuit Breaker 30 ft.Circuit breaker PartsGeek
22-45640Circuit Breaker 40 ft.Circuit breaker PartsGeek
22-45650Circuit Breaker 50 ft.Circuit breaker PartsGeek
22-45670Circuit Breaker 70 ft.Circuit breaker PartsGeek
22-62125S-3B Panel 12v/24vControl panel PartsGeek
22-65425S-3B Panel 12v/24vControl panel PartsGeek
22-70235S-3B Panel 12v/24vControl panel PartsGeek
22-70240S-3B Panel 12v/24vControl panel PartsGeek
22-70250S-3B Panel 12v/24vControl panel PartsGeek
22-70260S-3B Panel 12v/24vControl panel PartsGeek
22-70280S-3B Panel 12v/24vControl panel PartsGeek
22-70300S-3B Panel 12v/24vControl panel PartsGeek
22-70350S-3B Panel 12v/24vControl panel PartsGeek
22-70375S-3B Panel 12v/24vControl panel PartsGeek
22-93101Tough Series Controller 1ph Single Volt Off Unit M773LW3Controller PartsGeek
22-93102Tough Series Controller 1ph Single Volt Off Unit M843NW3Controller PartsGeek
22-95600S-1 Panel 12v/24vControl panel PartsGeek
22-95601S-3B Panel 12v/24vControl panel PartsGeek
22-95605S-1B Panel 12v/24vControl panel PartsGeek
22-95610Tough Series Controller 1ph Single Volt Off Unit M864W3/M944T/M944W3F/M944T3FController PartsGeek
22-95611S-3C Panel 12vControl panel PartsGeek
22-95612S-3C Panel 14vControl panel PartsGeek
22-98021Tough Series Controller 1ph Single Volt Off Unit M673LD3Controller PartsGeek
22-98412Tough Series Controller 1ph Single Volt Off Unit M844DW3/M844LW3Controller PartsGeek
306.3INTAKE AIR FILTER HOUSING12.1Air filter PartsGeek
41.2INTAKE AIR SNORKEL INLET1.6Intake air snorkel inlet PartsGeek
783.7CRANK CASE OIL FILL30.9Crank case oil fill PartsGeek
05-78010Sound Enclosure Assembly InstructionsService part / kit PartsGeek
92.5APPROX6.1Service part / kit PartsGeek
OM944FSafety Rules (Continued)1Service part / kit PartsGeek

Service, wear & replacement parts referenced for this model and its engine — confirm the exact part for your serial number. See the full parts catalog to search and cross-reference.

Fuel consumption

RatingLoadL/hgal/h
Prime
Prime50%5.03
Prime100%8.82
Standby
Standby50%6.05
Standby100%12.34

Available documents

Spec sheet — B108 M944W3 (Northern Lights)Spec sheet — B108 M944W3G-1 (Northern Lights)Spec sheet — B176 M944W3FG (Northern Lights)Spec sheet — B191-M944T3G (Northern Lights)Spec sheet — B191-M944TG (Northern Lights)Spec sheet — S150 Radiator cooled spec sheet V1 (Northern Lights)Operator's manual — OM944F (Northern Lights)Operator's manual — OM944T (Northern Lights)Operator's manual — OM944T3-1 (Northern Lights)Operator's manual — OM944W3-1 (Northern Lights)Operator's manual — OM944W3 (Northern Lights)Reference — D-4526A (Northern Lights)Reference — L116 1 4 warranty (Northern Lights)Reference — L631-Marine-Accessories (Northern Lights)Parts manual — D-5282A (Northern Lights)Parts manual — L510-Spares-Kit-Updated-April-2020 (Northern Lights)Parts manual — P944-3 (Northern Lights)Service manual — OM944W (Northern Lights)