Northern Lights — Oil change (SP2)
Maintenance · crankcase
From a Northern Lights owner's manual covering: 643/673, M643, M673, NL643, NL673. Check it applies to your exact model before use.
Applies to: Northern Lights M643, Northern Lights M673, Northern Lights NL643, Northern Lights NL673, Northern Lights L643 / L673 engine
Before you start
- Dispose of waste oil in an approved manner.
- Never use a flushing oil.
Procedure
- Change oil when the engine is warm.
- Loosen the clamp on the oil change tube and remove the cap; drain the oil.
- Replace the cap and tube.
- Refill the engine with recommended oil.
Specs & values
- 643 - 3.2 quarts (3.0 liters)
- 673 - 3.2 quarts (3.0 liters)
Full service-parts list: Northern Lights M643 →, Northern Lights M673 →, Northern Lights NL643 →, 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.