Northern Lights NL844 / NL844W3 — Cooling System Flushing
Maintenance
For the Northern Lights NL844 / NL844W3, from the Northern Lights owner's manual.
Applies to: Northern Lights NL844, Northern Lights NL844W3, Northern Lights 844L engine
Before you start
- Cooling water reaches extremely high temperatures; allow engine to cool before working.
- Open filler cap carefully using protective clothing.
Procedure
- Flush cooling system every 2500 hours or every 12 months, whichever comes first.
- Remove radiator cap, radiator drain and drain engine block.
- Pour clean water into radiator until water is free of discoloration and sediment.
- Close radiator drain and continue flushing until engine drain water is clear.
- Open all drain cocks and drain completely.
- Close drain cock and refill with recommended mixture.
- Clean leaves, dust and other debris off radiator fins.
Specs & values
- 50% distilled water / 50% ethylene glycol antifreeze mix
Full service-parts list: Northern Lights NL844 →, Northern Lights NL844W3 →
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.