Kohler — Anticorrosion Zinc Anode Replacement
Maintenance · Heat exchanger
From a Kohler operator's manual covering: 11EKOD, 11EKOZD, 5EFKOD, 5EFKOZD, 6EKOD, 6EKOZD, 7- 9EFKOZD, 7EFKOZD, 9- 11EKOZD, 9EFKOD, 9EFKOZD, 9EKOZD. Check it applies to your exact model before use.
Applies to: Kohler 11EKOZD, Kohler 5EFKOD, Kohler 6EKOD, Kohler 7EFKOZD, Kohler 9EFKOZD, Kohler 9EKOZD
Procedure
- With the generator set cooled, close the seacock, open the petcock on the engine, and drain the coolant.
- Remove the anticorrosion zinc anode (plug) from the heat exchanger.
- Use a wire brush to remove loose corrosion; replace the anode when <50% of length/diameter remains.
- Clean the threaded hole and coat the anode threads with pipe sealant suitable for marine applications.
- Cut the anticorrosion zinc to the correct length and install it into the heat exchanger.
- Close the petcock, open the seacock, and refill the cooling system.
- Start the generator set and check for leaks at the anticorrosion zinc anode location.
Tools required
- Wire brush Amazon
Tool links are Amazon searches (affiliate links); manufacturer special tools may only be available from a dealer.
Specs & values
- 10 (0.39) x 17 (0.67) mm (in.) anode dimensions
- Replace when <50% of length/diameter remains
Full service-parts list: Kohler 11EKOZD →, Kohler 5EFKOD →, Kohler 6EKOD →, Kohler 7EFKOZD →, Kohler 9EFKOZD →, Kohler 9EKOZD →
Source: Kohler 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.