Northern Lights — SP-19 Winterizing / Out-of-Service

Maintenance · Genset

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 844 (844L for LW models) engine, Northern Lights 844L engine

Procedure

1. If not used for more than 3 months, change engine oil and filter.
2. Run engine up to at least 140°F from a clean fuel source dosed with fuel system stabilizer/conditioner.
3. Completely drain, flush and fill the cooling system with pre-mixed 50/50 conventional ethylene-glycol heavy-duty diesel engine coolant.
4. Loosen alternator drive belt.
5. Seal off intake and exhaust openings with heavy plastic bags and duct tape.
6. Cover entire engine in large plastic bag, tape closed at bottom, place moisture absorbing desiccant packs inside.
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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