Northern Lights M773L — Replacing Raw Water Pump Impeller
Maintenance
For the Northern Lights M773L, from the Northern Lights operator's manual.
Applies to: Northern Lights M773L
Before you start
- Place protection under the screwdrivers so the pump housing is not damaged.
- Keep an extra impeller and cover gasket in reserve on board.
Procedure
- Remove the pump end cover.
- Pry out the impeller with needle-nose pliers or two screwdrivers, protecting the pump housing.
- Be sure all pieces of a failed impeller are removed.
- Clean the inside of the housing.
- Press in the new impeller and place sealing washers in the outer end of the impeller center.
- Replace the cover using a new gasket.
Tools required
Tool links are Amazon searches (affiliate links); manufacturer special tools may only be available from a dealer.
Full service-parts list: Northern Lights M773L →
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.