Northern Lights — Winterizing / Out-of-Service (SP-20)

Maintenance · Generator set

From a Northern Lights owner's manual covering: 844DW3, 844LW3, M20CRW3, M844DW3, M844LW3, M844W3. Check it applies to your exact model before use.

Applies to: Northern Lights M20CRW3, Northern Lights M844DW3, Northern Lights M844LW3, Northern Lights M844W3, Northern Lights 844L engine

Procedure

1. Change engine oil and filter as recommended.
2. Run engine up to at least 140°F from a small clean source of fuel dosed with fuel system stabilizer/conditioner.
3. Completely drain, flush and fill cooling system with pre-mixed 50/50 ethylene-glycol coolant.
4. Loosen alternator drive belt.
5. Seal off intake and exhaust openings with plastic bags and duct tape.
6. Cover entire engine in a large plastic bag with desiccant packs.
7. Store engine inside a building, preferably climate controlled.

Full service-parts list: Northern Lights M20CRW3 →, Northern Lights M844DW3 →, Northern Lights M844LW3 →, Northern Lights M844W3 →

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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