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Northern Lights M673L3G (6/5 kW) Generator

Northern Lights Northern Lights M673L3G (6/5 kW) · NL-M673L family: specifications, its industrial/tractor base engine, cross-referenced parts and where to buy them.

🚜 Base engine likely

The Northern Lights M673L3G is powered by a Lugger L673 diesel that matches the Shibaura E673L industrial block (67×72 mm / 0.761 L). Internal service parts often cross to Shibaura E673L / Perkins 100-series industrial numbers; NL marinizing parts keep Northern Lights numbers. source

761 ccdisplacement
67×72 mmbore × stroke
3-cylcylinders
from 2010year range (approx)
📋 Full specifications 4 🚜 Industrial / tractor base 🔧 Aftermarket 3

Parts by section · 55 assemblies

The exploded parts diagrams for the Northern Lights M673L3G (6/5 kW), grouped by system. Open a figure for its callout part numbers and per-variant quantities.

Body

Fig 1 — 6 7 8 9Fig 8 — Marine Application (1-8)Fig 9 — Industrial Application (1-9)Fig 14 — Heat Exchanger Cooling Components (3-1)Fig 15 — Keel Cooling Components (3-2)Fig 16 — FIG. 3-3Fig 21 — / C-1930 (3-8)Fig 22 — / C-1930 (3-9)

Cooling

Fig 17 — Coolant Pump - Marine (3-4)Fig 18 — Coolant Pump - Industrial (3-5)Fig 19 — Raw Water Pump (3-6)Fig 20 — Radiator (Copper) & Mounting (3-7)

Crankshaft & Pistons

Fig 3 — Crankshaft and Pistons (1-3)

Electrical

Fig 31 — System with Round "Merc" Plug Equipped Harness (5-1)Fig 32 — B+ Electrical System (5-3)Fig 33 — System with Round "Merc" Plug Equipped Harness (5-5)Fig 34 — B+ Electrical System (5-7)Fig 35 — FIG. 5-2 (5-8)Fig 36 — Alternator and Mounting (5-9)Fig 37 — Series 1-B Start/Stop Control Panel (5-10)Fig 38 — B+ Electrical Systems (5-11)Fig 39 — VDO Ocean Line Black Bezel Gauges (5-12)Fig 40 — VDO Viewline Black Bezel Gauges (5-13)Fig 41 — VDO Viewline Black Bezel Gauges (5-14)Fig 42 — VDO Ocean Line Black Bezel Gauges (5-15)Fig 43 — VDO Viewline Black Bezel Gauges (5-16)Fig 44 — VDO Viewline Black Bezel Gauges (5-18)Fig 45 — Marine Application - units with engine supports installed on after pads (5-19)Fig 46 — Marine Application - units with engine supports installed on forward pads (5-20)

Engine Block & Head

Fig 2 — Cylinder Block Assembly (1-1)Fig 6 — Cylinder Head (1-6)

Fuel

Fig 24 — Injection Pump and Lines (4-1)Fig 25 — Governor and Timing Gear Case (4-3)Fig 26 — Fuel Filter and Mounting (4-4)Fig 27 — D-4441 (4-5)Fig 28 — D-5046 (4-6)Fig 29 — Injector Assembly (4-7)Fig 30 — Injection Pump Assembly (4-8)

Generator

Fig 48 — Industrial - Up to S/N 6733-45822C (7-1)Fig 49 — TF-276D-N - Industrial - From S/N 6733-45823C (7-3)Fig 50 — Marine Unit with TF-276D Generator Up To S/N xxxx-45984C (8-0)

Inlet & Exhaust

Fig 10 — Up To S/N xxxx-54637 (2-0)Fig 11 — From S/N xxxx-54637 (2-1)Fig 12 — 673 AIR CLEANER (2-2)Fig 13 — 673 MUFFLER (2-3)

Lubricating

Fig 4 — Oil Pump and Strainer (1-4)

Miscellaneous

Fig 47 — Gasket Sets (6-0)Fig 55 — Marine Application (9-0)

Transmission & Mounting

Fig 23 — with 2 piece mounting (3-10)Fig 51 — From S/N xxxx-45985C (8-1)Fig 52 — "Gem Series" Marine Unit From S/N xxxx-54637 (8-3)Fig 53 — Up to S/N #6733-47812C (8-4)Fig 54 — / C-4322 (8-5)

Valve Train

Fig 5 — Camshaft (1-5)Fig 7 — Rocker Arm Assembly (1-7)
📚 Manuals & Sources
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Operator's Manual— none yet
Service / Workshop Manual— none yet
Parts Catalog / List
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Category
Generator
Engine family
NL-M673L
Year range (approx)
from 2010
Cylinders
3
Bore × stroke
67 × 72 mm
Displacement
761 cc
Max rpm
1800
Continuous rpm
1500