Northern Lights NL498D2 / NL498K2 — Flush Cooling System

Maintenance

For the Northern Lights NL498D2 / NL498K2, from the Northern Lights operator's manual.

Applies to: Northern Lights NL498D2

Procedure

1. Flush cooling system every 2000 hours or every 12 months, whichever comes first.
2. Remove radiator cap and open drains on radiator and engine block.
3. Pour clean water into radiator until water from radiator drain is clear.
4. Close radiator drain and continue flushing until water from engine drain is clear.
5. Drain engine and radiator completely; close drains and refill with 50% water / 50% ethylene glycol antifreeze.
6. Check hoses and connections and repair any leakage.
7. Start engine for five minutes, shut down, let cool, then check coolant level and add as needed.

Full service-parts list: Northern Lights NL498D2 →

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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