Northern Lights NL673 — Changing Lube Oil Filter (SP3)

Maintenance

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

Applies to: Northern Lights NL673

Procedure

1. Use a filter wrench to remove the old filter and dispose of it in an approved manner.
2. Make sure the old gasket is removed and discarded; clean the mount face.
3. Spread a thin film of engine oil on the new filter's rubber gasket.
4. Screw the filter onto the nipple until the gasket meets the sealing surface.
5. Tighten one-half turn farther by hand only; do not use a wrench.
6. Fill engine with recommended oil, start engine and check for leakage.
7. Stop engine, wait 3 minutes, and check oil level; add oil if necessary.

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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