Kohler — Precleaner Service (8.5/12RES Air Cleaner)
Maintenance · Air intake
From a Kohler operator's manual covering: 12RES, 12TRES, 17RES, 17RES/18RES, 18RES, 18TRES, 8.5RES. Check it applies to your exact model before use.
Applies to: Kohler 12RES, Kohler 12TRES, Kohler 17RES, Kohler 18RES, Kohler 18TRES, Kohler 8.5RES, Kohler CH640 engine, Kohler CH 740 engine, Kohler CH 980 engine
Procedure
- Place master switch to OFF/RESET
- Disconnect power to battery charger
- Disconnect battery, negative lead first
- Loosen cover retaining knob and remove cover
- Remove precleaner from paper element, wash in warm water with detergent, rinse and air dry
- Saturate precleaner with new engine oil, squeeze out excess
- Reinstall precleaner over paper element
- Reinstall air cleaner cover
- Reconnect battery charger power
- Reconnect battery negative lead last
Full service-parts list: Kohler 12RES →, Kohler 12TRES →, Kohler 17RES →, Kohler 18RES →, Kohler 18TRES →, Kohler 8.5RES →
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.