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Kohler 12RES / 18RES — Paper Element Service

Maintenance · Air cleaner

For the Kohler 12RES / 18RES, from the Kohler operator's manual.

Applies to: Kohler 12RES, Kohler 18RES, Kohler CH 740 engine, Kohler CH 980 engine

Before you start

  • Do not wash the paper element or clean it with pressurized air, as this will damage the element.

Parts for this job

Part numbers from the service-parts lists for Kohler 12RES, Kohler 18RES. Verify against your serial number before ordering; some links are affiliate links.

Procedure

  1. Place the generator set master switch in the OFF/RESET position.
  2. Disconnect the power to the battery charger.
  3. Disconnect the engine starting battery, negative (--) lead first.
  4. Loosen the cover retaining knob (or two knobs) and remove the cover.
  5. Remove the element cover nut, element cover, and the paper element with precleaner.
  6. Remove the precleaner from the paper element. Do not wash the paper element or clean with pressurized air.
  7. Replace the element if it is dirty, bent, or damaged.
  8. Check the air cleaner base and cover; replace all damaged air cleaner components.
  9. Reinstall the paper element, precleaner, element cover, nut, and air cleaner cover.
  10. Reconnect power to the battery charger and then the starting battery, negative (--) lead last.

Full service-parts list: Kohler 12RES →, Kohler 18RES →

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.

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