Northern Lights — SP7-9 Fuel Filters

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. Check the primary fuel filter daily as recommended by the filter manufacturer; empty the collection bowl as necessary.
2. Change the primary element as often as necessary or every 500 hours.
3. If the bowl fills with water, change the primary and secondary element immediately.
4. Change the secondary fuel filter every 500 hours.
5. Remove the spin-on filter by turning counterclockwise with a filter wrench.
6. Fill the new cartridge with fuel and apply engine oil to the gasket surface.
7. Screw on until the gasket contacts the sealing surface, then tighten two-thirds of a turn by hand.

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.

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