Kohler — Fill Cooling System

Maintenance

From a Kohler owner's manual covering: LH640, LH685, LH685/LH690, LH690. Check it applies to your exact model before use.

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Procedure

1. Check condition of cooling system hoses, clamps, and associated components. Replace as required.
2. Fill with 2.1 U.S. qt. (2.0 L) equal parts of ethylene glycol (anti-freeze) and water only. Distilled or deionized water recommended.
3. Fill radiator with coolant mixture. Allow coolant to drain into lower areas. Fill overflow reservoir between FULL and ADD marks. Reinstall radiator and reservoir caps.
4. Start and run engine for five minutes. Stop engine and allow to cool.
5. Recheck coolant level in reservoir. Level should be between FULL and ADD marks. Add coolant if required.

Source: Kohler owner'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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