Northern Lights NL673 — Winterizing / Out-of-Service (SP20)

Maintenance · Generator set

For the Northern Lights NL673, from the Northern Lights owner's manual.

Applies to: Northern Lights NL673

Procedure

1. Drain and flush the radiator and cooling system; leave dry or refill with antifreeze-water mixture.
2. Fill the fuel tank or add biocide as per manufacturer's instructions.
3. Seal the air cleaner inlet, exhaust opening, crankcase breather pipe and fuel tank vent with plastic bags and tape.
4. Store the set in a dry, protected place; cover if stored outside.
5. Change the crankcase oil and filter.
6. Loosen the alternator belt.
7. Disconnect and clean the battery; remove to warm storage place if possible.
8. Clean outside of unit and put corrosion preventative on all exposed metal surfaces.

Full service-parts list: Northern Lights NL673 →

Source: Northern Lights owner's manual. Steps and values are as documented; always cross-check against the official manual and any later revisions for your exact serial number before servicing.

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