Service parts for the M773LW3
Grouped by system, with how many of each the parts manual calls for.
Air intake
1 requiredFuel system
1 requiredOil system
1 requiredBelts
1 requiredPrices captured from merchant listings; some links are affiliate links. Confirm against your serial number before ordering.
Specifications
| Frequency | 60.0 Hz |
|---|---|
| Standby power | 9 kW |
| Prime power | 7 kW |
| Emissions | US EPA Tier III |
| Controller | TSC (OPTIONAL) |
| Oil capacity | 4.2 L |
| Alternator | four pole, four lead generator |
| Voltage options | 120 V, 240 V |
| Phase | 1 |
| Rated current | [75, 31.8] A |
| Power factor | 1 |
| Dimensions (L×W×H) | 604×559×889 mm |
| Dry weight | 244 kg |
Maintenance & consumables
for the Northern Lights L773LW| Item | Spec | Capacity | Part # | Interval | |
|---|---|---|---|---|---|
| Air filter | Air Filter | OM773LW3-01 | Amazon eBay | ||
| Fuel filter | Standard Fuel Filter | 24-50014 | eBay NAPA $56.45 | ||
| Oil filter | NL Oil Filter | 25-50014 | eBay | ||
| Battery | — | ||||
| Belt | Belt | OM773LW3-04 | Amazon eBay | ||
| Coolant | — | ||||
| Coolant filter | — | ||||
| Oil | spin-on oil filter with bypass | — | 200 hr | ||
| Spark plug | — |
Common questions
What is the power rating of the Northern Lights M773LW3?
The Northern Lights M773LW3 is rated 9 kW standby.
What engine is in the Northern Lights M773LW3?
The Northern Lights M773LW3 is powered by the Northern Lights L773LW engine.
What is the oil capacity of the Northern Lights M773LW3?
The Northern Lights M773LW3 has an engine oil capacity of 4.2 liters (4.4 US quarts), per the manufacturer specification sheet.
What is the prime power rating of the Northern Lights M773LW3?
The Northern Lights M773LW3 is rated 7 kW prime, against 9 kW standby.
What is the dry weight of the Northern Lights M773LW3?
The Northern Lights M773LW3 has a dry weight of 244 kg (537 lb).
What voltages is the Northern Lights M773LW3 available in?
The Northern Lights M773LW3 is offered in 120 V, 240 V, 1-phase.
What alternator comes on the Northern Lights M773LW3?
The Northern Lights M773LW3 uses a four pole, four lead generator alternator.
What oil filter fits the Northern Lights M773LW3?
The Northern Lights M773LW3 uses oil filter part number 25-50014.
What fuel filter fits the Northern Lights M773LW3?
The Northern Lights M773LW3 uses fuel filter part number 24-50014.
What air filter fits the Northern Lights M773LW3?
The Northern Lights M773LW3 uses air filter part number OM773LW3-01.
Parts
122| Part # | Description | Qty | System | |
|---|---|---|---|---|
| 00-32007 | Gas/Water Separator | Fuel filter | eBay | |
| 050209107 | Oil Seal | 1 | Seal | Amazon eBay FridayParts $44.63 |
| 052109076 | O-ring | 1 | Seal | Amazon eBay |
| 052109078 | O-ring | 1 | Seal | Amazon eBay |
| 052109113 | O-ring | 2 | Seal | Amazon eBay |
| 068115200 | Tube | 1 | Hose | Amazon eBay |
| 110996800 | Gasket | 1 | Gasket | Amazon eBay |
| 140116140 | Oil Pump Cover | 1 | Pump | Amazon eBay |
| 140546020 | Filter Joint | 1 | Gasket | Amazon eBay |
| 18-70005 | Hose 3/8”ID X 7” Push-On | 1 | Hose | Amazon Amazon eBay eBay |
| 18-72004 | Oil Drain Hose | 1 | Hose | Amazon eBay |
| 185046210 | Alternator Assembly | 1 | Alternator | Amazon eBay FridayParts $79.00 |
| 22-72010 | Overspeed Switch | Sensor | eBay | |
| 22-72080 | High output alternator (40A iso ground) 12V w/ adj. regulator | Alternator | eBay | |
| 22-72094 | Low oil level switch | Sensor | eBay | |
| 24-02001 | Oil Filter | 1 | Oil filter | Amazon eBay $23.45 NAPA $9.09 |
| 24-50013 | Primary Fuel Filter/Separator | Fuel filter | eBay | |
| 24-50014 | Fuel filter | Fuel filter | eBay NAPA $56.45 | |
| 25-12009 | Impeller Kit w/Gasket | 2 | Impeller | Amazon eBay $9.99 NAPA $53.39 |
| 25-12031 | Water pump Cover O-Ring | 2 | O ring | Amazon eBay |
| 25-12060 | Impeller | 1 | Impeller | Amazon eBay $28.99 |
| 25-12067 | O-Ring | 1 | Seal | Amazon eBay $6.95 NAPA $5.07 |
| 25-50014 | NL Oil Filter | Oil filter | eBay | |
| 26-71003 | Electric Fuel Pump 12V | Pump | eBay | |
| 26-71004 | Electric Fuel Pump 24V | Pump | eBay | |
| 37-12005 | Low water level switch | Sensor | eBay | |
| 7732-54108 | Belt guard | Belt guard | Amazon eBay | |
| 7732-54367 | Coolant recovery bottle | Coolant recovery bottle | Amazon eBay | |
| 7732-54637 | Generator control box | Control box | Amazon eBay | |
| 7732-54692 | AC circuit breaker for AVR | Ac circuit breaker avr | Amazon eBay | |
| OM773LW3-01 | Air Filter | 1 | Air filter | Amazon eBay |
| OM773LW3-02 | Oil Filter | 1 | Oil filter | Amazon eBay |
| OM773LW3-03 | Fuel Filter | 1 | Fuel filter | Amazon eBay |
| OM773LW3-04 | Belt | 1 | Belt | Amazon eBay |
| OM773LW3-05 | Battery | 1 | Battery | Amazon eBay |
| OM773LW3-06 | Spark Plug | 1 | Spark plug | Amazon eBay |
| T430626 | O-ring | 2 | Seal | Amazon eBay |
| T435160 | Gasket | 1 | Gasket | Amazon eBay |
| 00-32000 | Water Lift Type Muffler | Service part / kit | eBay | |
| 010109340 | Bolt | 6 | Service part / kit | Amazon eBay |
| 010700845 | Bolt | 2 | Service part / kit | Amazon eBay |
| 010810845 | Bolt | 2 | Service part / kit | Amazon eBay |
| 0109440 | Stud | 2 | Service part / kit | Amazon eBay |
| 011310612 | Bolt | 1 | Service part / kit | Amazon eBay |
| 011510850 | Bolt | 2 | Service part / kit | Amazon eBay |
| 015140408 | Screw | 1 | Service part / kit | Amazon eBay |
| 015140425 | Screw | 2 | Service part / kit | Amazon eBay |
| 020210010 | Nut | 1 | Service part / kit | Amazon eBay |
| 020800018 | Nut | 1 | Service part / kit | Amazon eBay |
| 026100010 | Washer | 1 | Service part / kit | Amazon eBay |
| 027100010 | Spring washer | 1 | Service part / kit | Amazon eBay |
| 030300816 | Spring Pin | 1 | Service part / kit | Amazon eBay |
| 030500512 | Dowel Pin | 2 | Service part / kit | Amazon eBay |
| 030500616 | Dowel Pin | 2 | Service part / kit | Amazon eBay |
| 030501025 | Dowel Pin | 2 | Service part / kit | Amazon eBay |
| 030509020 | Dowel Pin | 1 | Service part / kit | Amazon eBay |
| 036509005 | Snap Ring | 1 | Service part / kit | Amazon eBay |
| 036800010 | Snap Ring | 1 | Service part / kit | Amazon eBay |
| 040106203 | Bearing | 1 | Service part / kit | Amazon eBay |
| 040126210 | Bearing | 2 | Service part / kit | Amazon eBay |
| 042303015 | Bearing | 1 | Service part / kit | Amazon eBay |
| 064210015 | Expansion Plug, 15 mm | 1 | Service part / kit | Amazon eBay |
| 064210025 | Expansion Plug, 25 mm | 1 | Service part / kit | Amazon eBay |
| 064210035 | Expansion Plug, 35 mm | 2 | Service part / kit | Amazon eBay |
| 064210045 | Expansion Plug, 45 mm | 1 | Service part / kit | Amazon eBay |
| 110756490 | Dipstick Tube | 1 | Service part / kit | Amazon eBay |
| 140166400 | Rotor | 1 | Service part / kit | Amazon eBay |
| 140987140 | Oil Pipe | 1 | Service part / kit | Amazon eBay |
| 165166410 | Front Plate | 1 | Service part / kit | Amazon eBay |
| 165296142 | Idle Gear Shaft Assembly | 1 | Service part / kit | Amazon eBay FridayParts $185.00 |
| 185446217 | Plate, complete | 1 | Service part / kit | Amazon eBay |
| 185446218 | Stator, complete | 1 | Service part / kit | Amazon eBay |
| 185446219 | Flywheel, complete | 1 | Service part / kit | Amazon eBay |
| 185446220 | Clamp | 1 | Service part / kit | Amazon eBay |
| 185716200 | Plate | 1 | Service part / kit | Amazon eBay |
| 198216720 | Spring | 1 | Service part / kit | Amazon eBay |
| 198216821 | Spring | 1 | Service part / kit | Amazon eBay |
| 198466050 | Blank Plug | 1 | Service part / kit | Amazon eBay |
| 198466940 | Plug | 4 | Service part / kit | Amazon eBay |
| 198486770 | Bushing | 1 | Service part / kit | Amazon eBay |
| 198517592 | Bush; S.T.D. (formerly #198517591) | 1 | Service part / kit | Amazon eBay |
| 198517596 | Bush; U.S. 0.25 (formerly #198517595) | 1 | Service part / kit | Amazon eBay |
| 198517599 | Bush; U.S. 0.50 (formerly #198517598) | 1 | Service part / kit | Amazon eBay |
| 198517602 | Bearing; S.T.D. | 6 | Service part / kit | Amazon eBay |
| 198517606 | Bearing; U.S, 0.25 (formerly #198517604 & 198517605) | 6 | Service part / kit | Amazon eBay |
| 198517609 | Bearing; U.S. 0.50 (formerly #198517607 & 198517608) | 6 | Service part / kit | Amazon eBay |
| 199236510 | Collar | 1 | Service part / kit | Amazon eBay |
| 199236540 | Collar | 1 | Service part / kit | Amazon eBay |
| 199266180 | Thrust Washer | 1 | Service part / kit | Amazon eBay |
| 199286150 | Shim, 0.1 mm | 1 | Service part / kit | Amazon eBay |
| 199286160 | Shim, 0.15 mm | 1 | Service part / kit | Amazon eBay |
| 199286170 | Shim, 0.2 mm | 1 | Service part / kit | Amazon eBay |
| 199286180 | Shim, 0.5 mm | 1 | Service part / kit | Amazon eBay |
| 21-00612 | Male Connector, Stl. 1/4NPT X 3/8-37T | 1 | Service part / kit | Amazon eBay |
| 21-31624 | Plug, Hex Head, Brass 1/4NPT | 1 | Service part / kit | Amazon eBay |
| 21-71034 | Female Swivel, Brass. 3/8HB X 3/8-37T Push-On | 1 | Service part / kit | Amazon eBay |
| 21-71203 | Male Connector Brass 1/4NPT X 3/8HB Push-On | 1 | Service part / kit | Amazon eBay |
| 22-70235 | Circuit Breaker 35A 240VAC | Service part / kit | Amazon eBay | |
| 22-70240 | Circuit Breaker 40A 240VAC | Service part / kit | Amazon eBay | |
| 2314F001 | Bolt | 1 | Service part / kit | Amazon eBay |
| 27-18301 | Siphon Break | Service part / kit | eBay | |
| 27-31206 | Dry Exhaust - Critical Residential | Service part / kit | eBay | |
| 27-31904 | Dry Exhaust Flex | Service part / kit | eBay | |
| 38-03120 | Standard Spare Parts Kit - HE | Service part / kit | eBay | |
| 38-03126 | World Class Spare Parts Kit - HE | Service part / kit | eBay | |
| 38-03130 | Standard Spare Parts Kit - KC | Service part / kit | eBay | |
| 38-03136 | World Class Spare Parts Kit - HE (KC series row as printed) | Service part / kit | eBay | |
| B-12630 | Ball valve, Brass 90 Deg 1/4NPT Male X 1/4NPT Female | 1 | Service part / kit | Amazon eBay |
| T03509005 | Spring Pin | 2 | Service part / kit | Amazon eBay |
| T422798 | Bolt | 3 | Service part / kit | Amazon eBay |
| T426252 | Key | 1 | Service part / kit | Amazon eBay |
| T433961 | Oil Pan | 1 | Service part / kit | Amazon eBay |
| T434590 | Stud | 1 | Service part / kit | Amazon eBay |
| T434939 | Stud | 1 | Service part / kit | Amazon eBay |
| T436321 | Ring Gear, 96 Teeth | 1 | Service part / kit | Amazon eBay |
| T438294 | Idle Gear Assembly (former # 165026100) | 1 | Service part / kit | Amazon eBay |
| T438385 | Dipstick | 1 | Service part / kit | Amazon eBay |
| U10996900 | Capscrew, Hex Head M6 x 1.0 x 14 mm (with Lock Washer) | 20 | Service part / kit | Amazon eBay |
| U15276280 | Crankshaft Gear | 1 | Service part / kit | Amazon eBay |
| U15356720 | Flywheel Assembly (includes key #28) | 1 | Service part / kit | Amazon eBay |
| U15397310 | Crankshaft Pulley | 1 | Service part / kit | Amazon eBay |
| U40406500 | Pick-up | 1 | Service part / kit | Amazon eBay |
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
| Rating | Load | L/h | gal/h |
|---|---|---|---|
| Prime | 1.4 | 1.4 | |
| Prime | 100% | 2.72 | 0.72 |
| Standby | 0.93 | 0.93 | |
| Standby | 100% | 3.52 | 0.93 |
Available documents
Spec sheet — B184-M773LW3G-1 (Northern Lights)Spec sheet — B184-M773LW3G (Northern Lights)Spec sheet — S103 M773LW3 spec sheets V1 (Northern Lights)Spec sheet — S202-M773LW3GN (Northern Lights)Operator's manual — OM773LW3 (Northern Lights)Parts manual — D-5035A (Northern Lights)Parts manual — D-5035B (Northern Lights)Parts manual — D-5670 (Northern Lights)Parts manual — L631-Marine-Accessories (Northern Lights)Parts manual — P773N-3 (Northern Lights)Parts manual — p773-3-i (Northern Lights)
This page was generated from the 11 manufacturer documents above by automated extraction; every figure shown is copied from one of them. How the data is compiled.