Northern Lights — SP14 Cooling System Flushing

Maintenance

From a Northern Lights operator's manual covering: M20C, M844LW2, M844W2. Check it applies to your exact model before use.

Applies to: Northern Lights M20C, Northern Lights M844LW2, Northern Lights M844W2, Northern Lights 844W2 / 844LW2 engine, Northern Lights 844W2 engine, Northern Lights 844LW2 engine

Procedure

1. Flush the cooling system every 2500 hours or every 12 months, whichever comes first.
2. Remove expansion tank cap and drain the engine block.
3. Open block drain cock and remove hose from bottom of heat exchanger tank.
4. Pour clean water into the expansion tank until water from the drains is free of discoloration and sediment.
5. Let water drain completely, close drains and refill with recommended mixture.
6. Check hoses and connections and repair any leakage.

Full service-parts list: Northern Lights M20C →, Northern Lights M844LW2 →, Northern Lights M844W2 →

Source: Northern Lights operator'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.

More Northern Lights repair guides →