Service parts for the NL673L4
Grouped by system, with how many of each the parts manual calls for.
Fuel system
1 requiredOil system
1 requiredPrices captured from merchant listings; some links are affiliate links. Confirm against your serial number before ordering.
Specifications
| Fuel | Diesel |
|---|---|
| Frequency | 60.0 Hz |
| Standby power | 5 kW |
| Prime power | 4 kW |
| Emissions | Tier IV |
| Controller | S-1B |
| Oil capacity | 3.0 L |
| Alternator | 4 pole, revolving field, 4 lead reconnectable generator with Class H insulation and prelubricated bearing |
| Voltage options | 120 V, 240 V, 25 V, 50 V |
| Phase | Single Phase |
| Rated current | 50 A |
| Power factor | 1.0 |
| Circuit breaker | 30 A |
| Battery voltage | 12 V |
| Max ambient | 50 °C |
| Dimensions (L×W×H) | 834×435×650 mm |
| Dry weight | 178 kg |
Engine
| Oil capacity | 3.1 L |
|---|---|
| Displacement | 0.76 L |
| Aspiration | Naturally Aspirated |
| Rated speed | 1800 rpm |
Maintenance & consumables
for the Northern Lights L673L Engine| Item | Spec | Capacity | Part # | Interval | |
|---|---|---|---|---|---|
| Fuel filter | large spin-on fuel filter | 24-52020 | 500 hr | Amazon $29.87 eBay $24.71 | |
| Oil filter | full flow, spin-on oil filter with bypass | 24-08001 | 50 hr | Amazon eBay $27.44 | |
| Battery | Battery charging alternator with solid state voltage regulator and DC circuit breaker | — | |||
| Belt | 20 foot (6m) plug-in panel harness | — | |||
| Oil | — | 200 hr | |||
| Spark plug | — |
Common questions
How many kW is the Northern Lights NL673L4?
The Northern Lights NL673L4 is rated 5 kW standby.
What engine is in the Northern Lights NL673L4?
The Northern Lights NL673L4 is powered by the Northern Lights L673L Engine engine.
What fuel does the Northern Lights NL673L4 use?
The Northern Lights NL673L4 runs on Diesel.
How much oil does the Northern Lights NL673L4 take?
The Northern Lights L673L Engine engine in the Northern Lights NL673L4 has an oil capacity of 3.1 liters.
Which alternator is fitted to the Northern Lights NL673L4?
The Northern Lights NL673L4 uses a 4 pole, revolving field, 4 lead reconnectable generator with Class H insulation and prelubricated bearing alternator.
What oil filter fits the Northern Lights NL673L4?
The Northern Lights NL673L4 uses oil filter part number 24-08001.
Which fuel filter part number does the Northern Lights NL673L4 take?
The Northern Lights NL673L4 uses fuel filter part number 24-52020.
Parts
145| Part # | Description | Qty | System | |
|---|---|---|---|---|
| 00-32006 | Gas/Water Separator | Fuel filter | eBay | |
| 025100012 | Seal Washer (Industrial only) | 1 | Seal | Amazon eBay |
| 052109076 | O-ring | 1 | Seal | Amazon eBay |
| 052109078 | O-ring | 1 | Seal | Amazon eBay |
| 052109113 | O-ring | 2 | Seal | Amazon eBay |
| 052400400 | O-Ring | 1 | O ring | Amazon eBay |
| 06-78020 | Seal bar assembly | 1 | Seal | Amazon eBay |
| 068115200 | Tube | 1 | Hose | Amazon eBay |
| 11-18602 | Gasket, Thermostat Cover | 2 | Gasket | Amazon eBay |
| 110996760 | Gasket | 1 | Gasket | Amazon eBay |
| 111147650 | Head Gasket, Thickness= 1.2 mm | 1 | Gasket | Amazon eBay FridayParts $96.80 |
| 111147660 | Head Gasket, Thickness= 1.3 mm | 1 | Gasket | Amazon eBay FridayParts $56.00 |
| 111996420 | Gasket, Rocker Arm Cover | 2 | Gasket | Amazon eBay $19.95 |
| 111996470 | Gasket, Rocker Arm Cover | 2 | Gasket | Amazon eBay $49.95 |
| 120406080 | Valve Guide Seal | 6 | Seal | Amazon eBay |
| 130506140 | Fuel Lift Pump | 1 | Pump | Amazon $34.50 eBay FridayParts $33.08 |
| 130996130 | Fuel Lift Pump Mtg. Gasket | 1 | Gasket | Amazon eBay |
| 135996731 | Exhaust Manifold Gasket | 1 | Gasket | Amazon eBay |
| 140166130 | Rotor | 1 | Pump | Amazon eBay |
| 140406570 | Suction Filter | 1 | Oil filter | Amazon eBay |
| 140546020 | Filter Joint | 1 | Gasket | Amazon eBay |
| 145206022 | Thermostat | 1 | Thermostat | Amazon $20.83 eBay FridayParts $14.44 |
| 145206320 | Thermostat | 1 | Thermostat | Amazon eBay $80.04 FridayParts $36.00 |
| 165996490 | Gasket | 1 | Gasket | Amazon eBay |
| 18-72004 | Oil Drain Hose | 1 | Hose | Amazon eBay |
| 18-78009 | Hose Assembly 3/8" x 15" (used with oil pan 36-78006) | 1 | Hose | Amazon eBay |
| 185046210 | Alternator Assembly | 1 | Alternator | Amazon $225.00 eBay FridayParts $79.00 |
| 195907370 | Gasket Set | 1 | Gasket set | Amazon eBay |
| 198636080 | Oil Seal | 1 | Seal | Amazon $95.65 eBay FridayParts $46.35 |
| 22-48011 | Fuse for main circuit | Fuse | Amazon eBay | |
| 22-68304 | Brush & Holder Assembly | 1 | Brush holder | Amazon eBay |
| 22-68312 | Fuse for main circuit | Fuse | Amazon eBay | |
| 22-72010 | Overspeed Switch | Sensor | eBay | |
| 24-02002 | Oil Filter | 4 | Oil filter | Amazon eBay $21.99 |
| 24-08001 | Oil Filter | 1 | Oil filter | Amazon eBay $27.44 |
| 24-28003 | Air filter | Air filter | Amazon eBay $85.32 | |
| 24-28300 | Air filter | Air filter | Amazon eBay | |
| 24-28602 | Air Filter Element | 1 | Air filter | Amazon eBay |
| 24-50013 | Primary Fuel Filter/Separator | Fuel filter | eBay | |
| 24-50014 | Standard Fuel Filter | Fuel filter | eBay | |
| 24-52020 | Secondary fuel filter (spin-on) | 1 | Fuel filter | Amazon $29.87 eBay $24.71 |
| 25-12009 | Impeller Kit w/Gasket | 2 | Impeller kit | Amazon eBay $9.99 |
| 25-12031 | Water pump Cover O-Ring | 2 | O ring | Amazon eBay |
| 25-12057 | Raw Water Pump | 1 | Pump | Amazon eBay $582.42 FridayParts $381.16 |
| 25-12067 | O-Ring, Raw Water Pump Cover | 2 | O ring | Amazon eBay |
| 26-71003 | Electric Fuel Pump 12V | Pump | eBay | |
| 29-08601 | Gasket Set | 1 | Gasket set | Amazon eBay |
| 40-02002 | Drive Belt | 1 | Belt | Amazon $64.07 eBay $46.28 |
| 40-08601 | Drive Belt | 1 | Belt | Amazon eBay $122.00 |
| M673L2 | Platform vibration mounts. | 1 | Base | Amazon eBay $27.44 FridayParts $79.04 |
| W673-2 | 1 | Workshop manual | Amazon eBay | |
| W843-844-2 | 1 | Workshop manual | Amazon eBay | |
| 00-38300 | Water Lift Type Muffler | Service part / kit | eBay | |
| 00-70083 | GROMMET, 1-1/8” ID x 1-7/8” OD PENETRATION PLATE | 2 | Service part / kit | Amazon eBay |
| 040106203 | Bearing | 1 | Service part / kit | Amazon eBay |
| 040109059 | Bearing | 1 | Service part / kit | Amazon eBay |
| 040126210 | Bearing | 2 | Service part / kit | Amazon eBay |
| 042303015 | Bearing | 1 | Service part / kit | Amazon eBay |
| 05-70001 | CORNER CASTING | 4 | Service part / kit | Amazon eBay |
| 05-72003 | BOLTING ASSEMBLY, LONG, STAINLESS STEEL | 8 | Service part / kit | Amazon eBay |
| 05-75714 | BOLTING ASSEMBLY, SHORT, STAINLESS STEEL | 20 | Service part / kit | Amazon eBay |
| 05-78014 | LEFT SIDE PANEL ASSEMBLY | 1 | Service part / kit | Amazon eBay |
| 05-78017 | REAR PANEL ASSEMBLY | 1 | Service part / kit | Amazon eBay |
| 05-78018 | FRONT PANEL ASSEMBLY | 1 | Service part / kit | Amazon eBay |
| 05-78019 | RIGHT SIDE PANEL ASSEMBLY | 1 | Service part / kit | Amazon eBay |
| 05-78021 | TOP PANEL ASSEMBLY | 1 | Service part / kit | Amazon eBay |
| 05-78022 | PENETRATION PANEL ASSEMBLY | 1 | Service part / kit | Amazon eBay |
| 05-78023 | EXTRUSION, VERTICAL | 4 | Service part / kit | Amazon eBay |
| 05-78024 | EXTRUSION, HORIZONTAL, SIDES | 2 | Service part / kit | Amazon eBay |
| 05-78026 | EXTRUSION, HORIZONTAL, ENDS | 2 | Service part / kit | Amazon eBay |
| 05-78029 | JUNCTION BOX SUPPORT BRKT COVER ASSEMBLY | 1 | Service part / kit | Amazon eBay |
| 06-78002 | Front panel assembly | 1 | Service part / kit | Amazon eBay |
| 06-78003 | Rear panel assembly | 1 | Service part / kit | Amazon eBay |
| 06-78006 | Top panel assembly | 1 | Service part / kit | Amazon eBay |
| 06-78008 | Lower non-service side valence assembly | 1 | Service part / kit | Amazon eBay |
| 06-78010 | Service side panel assembly | 1 | Service part / kit | Amazon eBay |
| 06-78012 | Non-service side panel assembly | 1 | Service part / kit | Amazon eBay |
| 06-78015 | Front lower valence assembly | 1 | Service part / kit | Amazon eBay |
| 06-78018 | Rear lower valence assembly | 1 | Service part / kit | Amazon eBay |
| 06-78029 | Junction box bridge cover assembly | 1 | Service part / kit | Amazon eBay |
| 06-78030 | Lower service side valence assembly | 1 | Service part / kit | Amazon eBay |
| 11-467 | Nylon bumper/rivet | 12 | Service part / kit | Amazon eBay |
| 110136445 | Intake Valve Seat | 3 | Service part / kit | Amazon eBay |
| 115017630 | Piston, standard (includes key #16) | 3 | Service part / kit | Amazon eBay |
| 115104050 | Ring Kit, standard | 3 | Service part / kit | Amazon eBay |
| 115326260 | Piston Pin | 3 | Service part / kit | Amazon eBay |
| 12-00000 | #10-32 MACHINE SCREW x 1/2” LONG, STAINLESS STEEL | 8 | Service part / kit | Amazon eBay |
| 12-00776 | M8 x 20 18-8, S/S hex head capscrew | 4 | Service part / kit | Amazon eBay |
| 12-30111 | 1/4-20 x 3/4” hex head capscrew S/S | 3 | Service part / kit | Amazon eBay |
| 12-70013 | M8 x 12 18-8, S/S button head screw | 2 | Service part / kit | Amazon eBay |
| 120026810 | Camshaft Assembly (includes keys #2 - 6) | 1 | Service part / kit | Amazon eBay |
| 120116100 | Tappet | 5 | Service part / kit | Amazon eBay |
| 120116180 | Tappet (#1 Exhaust only) | 1 | Service part / kit | Amazon eBay |
| 120166370 | Intake Valve | 3 | Service part / kit | Amazon eBay |
| 120176290 | Exhaust Valve | 3 | Service part / kit | Amazon eBay |
| 120186100 | Retainer | 6 | Service part / kit | Amazon eBay |
| 120216130 | Valve Cap | 6 | Service part / kit | Amazon eBay |
| 120226080 | Valve Keeper | 12 | Service part / kit | Amazon eBay |
| 120456320 | Push Rod | 6 | Service part / kit | Amazon eBay |
| 14-00032 | #10-32 NYLOCK HEX NUT, STAINLESS STEEL | 12 | Service part / kit | Amazon eBay |
| 140036220 | Relief Valve Assembly | 1 | Service part / kit | Amazon $69.00 eBay FridayParts $68.50 |
| 15-00705 | M8 lock washer | 4 | Service part / kit | Amazon eBay |
| 15-09103 | 1/4” external star washer, S/S | 3 | Service part / kit | Amazon eBay |
| 15-11000 | M8 flat washer (s/s) | 4 | Service part / kit | Amazon eBay |
| 15-70002 | #10 FLATWASHER, USS STAINLESS STEEL | 12 | Service part / kit | Amazon eBay |
| 185446218 | Stator, complete | 1 | Service part / kit | Amazon eBay |
| 198217070 | Spring | 6 | Service part / kit | Amazon eBay |
| 198517103 | Bearing, Standard Upper | 1 | Service part / kit | Amazon eBay |
| 198517107 | Bearing, undersize 0.25 mm (formerly #198517106) | 1 | Service part / kit | Amazon eBay |
| 198517112 | Bearing, Standard Lower | 1 | Service part / kit | Amazon eBay |
| 198517116 | Bearing, undersize 0.25 mm (formerly #198517115) | 1 | Service part / kit | Amazon eBay |
| 198517119 | Bearing, undersize 0.50 mm (formerly #198517118) | 1 | Service part / kit | Amazon eBay |
| 198517301 | Bushing, standard | 1 | Service part / kit | Amazon eBay |
| 198517305 | Bushing, undersize 0.25 mm | 1 | Service part / kit | Amazon eBay |
| 198517308 | Bushing, undersize 0.50 mm | 1 | Service part / kit | Amazon eBay |
| 198517312 | Bearing, standard (formerly #198517311) | 6 | Service part / kit | Amazon eBay |
| 198517316 | Bearing, undersize 0.25 mm (formerly #198517315) | 6 | Service part / kit | Amazon eBay |
| 198517319 | Bearing, undersize 0.50 mm (formerly #198517318) | 6 | Service part / kit | Amazon eBay |
| 198517325 | Bushing | 3 | Service part / kit | Amazon eBay |
| 198517332 | Bearing, Standard Upper (formerly #198517331) | 2 | Service part / kit | Amazon eBay |
| 198517336 | Bearing, undersize 0.25 mm (formerly #198517335) | 2 | Service part / kit | Amazon eBay |
| 198517339 | Bearing, undersize 0.50 mm (formerly #198517338) | 2 | Service part / kit | Amazon eBay |
| 198517342 | Bearing, Standard Lower (formerly #198517341) | 2 | Service part / kit | Amazon eBay |
| 198517346 | Bearing, undersize 0.25 mm (formerly #198517345) | 2 | Service part / kit | Amazon eBay |
| 198517349 | Bearing, undersize 0.50 mm (formerly #198517348) | 2 | Service part / kit | Amazon eBay |
| 198517630 | Bearing, undersize 0.50 mm (formerly #198517109) | 1 | Service part / kit | Amazon eBay |
| 199266180 | Thrust Washer | 1 | Service part / kit | Amazon eBay |
| 22-42047 | Relay, 12 Volt SPDT | 1 | Service part / kit | Amazon eBay |
| 22-68000 | DST-61 regulator with fuse and adaptor kit | 1 | Service part / kit | Amazon eBay |
| 22-68035 | DST-61 regulator without fuse parts | 1 | Service part / kit | Amazon eBay $680.84 |
| 22-72026 | Kit, harness addition | 1 | Service part / kit | Amazon eBay |
| 23-78003 | REAR PANEL RETAINING BRACKET | 2 | Service part / kit | Amazon eBay |
| 23-78007 | TOE BRACKET | 4 | Service part / kit | Amazon eBay |
| 23-78016 | PANEL RETAINER BLOCK, SINGLE NOSE, NYLON | 8 | Service part / kit | Amazon eBay |
| 24-08015 | Heat Exchanged Kit #38-08015 | 1 | Service part / kit | Amazon eBay |
| 24-08019 | Heat Exchanged Kit #38-08019 | 1 | Service part / kit | Amazon eBay |
| 27-31232 | Dry Exhaust - Critical Residential | Service part / kit | eBay | |
| 27-38302 | Dry Exhaust Flex | Service part / kit | eBay | |
| 28-68003 | Adaptor mounting plate | 1 | Service part / kit | Amazon eBay |
| 38-08015 | Standard Spare Parts Kit - HE | Service part / kit | eBay | |
| 38-08016 | World Class Spare Parts Kit - HE | Service part / kit | eBay | |
| 38-08019 | Standard Spare Parts Kit - KC | Service part / kit | eBay | |
| 38-08020 | World Class Spare Parts Kit - HE (KC series row as printed) | Service part / kit | eBay | |
| 55-78066 | SOUND FOAM, PENETRATION PLATE OPTION | 2 | Service part / kit | Amazon eBay |
| 55-78068 | PLUG, BASE PAN MOUNTING FOOT POCKET | 4 | 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 | 0.59 | 2.2 | |
| Prime | 50% | 0.32 | 1.2 |
| Prime | 100% | 2.2 | 0.59 |
| Standby | 0.5 | 1.9 | |
| Standby | 50% | 0.28 | 1.1 |
Available documents
Spec sheet — B143 NL673L4 (Northern Lights)Spec sheet — S143 NL673L4 spec sheet V1 (Northern Lights)Spec sheet — S144 NL673L4E spec sheet V1 (Northern Lights)Service manual — ONL673L4 (Northern Lights)