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Northern Lights M673L4 / NL673L4 Generator

Northern Lights Northern Lights M673L4 / NL673L4 · NL-M673L family: specifications, its industrial/tractor base engine, cross-referenced parts and where to buy them.

🚜 Base engine not identified

The Northern Lights Northern Lights M673L4 / NL673L4 is a marinized industrial/tractor engine, but its specific donor block isn't identified yet. Its aftermarket equivalents may still help.

📋 Full specifications 🚜 Industrial / tractor base 🔧 Aftermarket 2

Parts by section · 35 assemblies

The exploded parts diagrams for the Northern Lights M673L4 / NL673L4, grouped by system. Open a figure for its callout part numbers and per-variant quantities.

Body

Fig 1 — 6 7 8 9Fig 11 — FIG. 3-3 (3-0)Fig 13 — / C-1930 (3-2)

Cooling

Fig 12 — Coolant Pump (3-1)

Crankshaft & Pistons

Fig 3 — Crankshaft and Pistons (1-3)

Electrical

Fig 19 — Engine Electrical - 12 Volt Standard Ground NL673L4 (5-1)Fig 20 — B+ Electrical System (5-3)Fig 21 — Engine Electrical - 12 Volt Standard Ground NL673L4E (5-5)Fig 22 — B+ Electrical System (5-7)Fig 23 — FIG. 5-2 (5-8)Fig 24 — Alternator and Mounting (5-9)Fig 25 — Series 1-B Start/Stop Control Panel (5-10)Fig 26 — B+ Electrical Systems (5-11)Fig 27 — VDO Viewline Black Bezel Gauges (5-12)Fig 28 — VDO Viewline Black Bezel Gauges (5-13)Fig 29 — VDO Viewline Black Bezel Gauges (5-14)Fig 30 — VDO Viewline Black Bezel Gauges (5-17)Fig 31 — Belt Guard (5-19)

Engine Block & Head

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

Fuel

Fig 14 — Injection Pump and Lines (4-1)Fig 15 — Governor and Timing Gear Case (4-3)Fig 16 — Fuel Filter and Mounting (4-4)Fig 17 — Injector Assembly (4-5)Fig 18 — Injection Pump Assembly (4-6)

Generator

Fig 33 — TF-276D-N - From S/N 6733-45823C (7-1)

Inlet & Exhaust

Fig 9 — 673 AIR CLEANER (2-0)Fig 10 — 673 MUFFLER (2-1)

Lubricating

Fig 4 — Oil Pump and Pick-Up (1-4)Fig 35 — Oil Drain Kit (9-0)

Miscellaneous

Fig 32 — Gasket Sets (6-0)

Transmission & Mounting

Fig 34 — / C-4322 (8-0)

Valve Train

Fig 5 — Camshaft (1-5)Fig 7 — Rocker Arm Assembly (1-7)Fig 8 — Rocker Arm Cover (1-8)
📚 Manuals & Sources
Specs— none yet
Operator's Manual— none yet
Service / Workshop Manual— none yet
Parts Catalog / List— none yet
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Category
Generator
Engine family
NL-M673L

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