Northern Lights — SP13 Check the Coolant Level
Maintenance · cooling system
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
Before you start
- Close the sea-cock before working on the engine cooling system.
- Allow the engine to cool before working on the cooling system.
Procedure
- Check the coolant level each day before starting the engine.
- Remove the pressure cap from the expansion tank.
- Level should be about 1 in. (2.5 cm) below the filler cap sealing surface when the engine is cold.
- Use a cap pressure tester to check the cap if it is suspected faulty.
Tools required
- cap pressure tester Amazon
Tool links are Amazon searches (affiliate links); manufacturer special tools may only be available from a dealer.
Specs & values
- Coolant 1 in. (2.5 cm) below filler cap sealing surface
- Cap release pressure approximately 7 PSI (0.5 bar)
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.