Northern Lights — SP-17 Raw Water Pump Impeller Replacement
Maintenance
From a Northern Lights operator's manual covering: M30, M38C3, M38C3F, M40C3F, M944. Check it applies to your exact model before use.
Applies to: Northern Lights M30, Northern Lights M38C3, Northern Lights M38C3F, Northern Lights M40C3F, Northern Lights M944
Before you start
- Place protection under the screwdrivers so the pump housing is not damaged.
Procedure
- Change the raw water pump impeller every 500 hours, or as needed.
- Remove the pump cover.
- Pry out the impeller using needle-nose pliers or two screwdrivers, protecting the pump housing.
- Be sure to remove all pieces of the failed impeller and clean inside of housing.
- Press in new impeller and place sealing plug in the outer end of the impeller center.
- Keep an extra impeller and cover gasket in reserve on board.
Tools required
Tool links are Amazon searches (affiliate links); manufacturer special tools may only be available from a dealer.
Specs & values
- Change impeller every 500 hours
Full service-parts list: Northern Lights M30 →, Northern Lights M38C3 →, Northern Lights M38C3F →, Northern Lights M40C3F →, Northern Lights M944 →
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.