Briggs & Stratton — Changing Coolant

Maintenance · Cooling system

From a Briggs & Stratton service manual — check it applies to your exact model before use.

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Procedure

1. Change coolant once a year with engine cold.
2. Remove radiator cap, remove radiator drain plug and drain the system.
3. Tighten drain plug.
4. Fill radiator with 50% solution of phosphate free antifreeze.
5. Start and run engine until thermostat opens (coolant level drops).
6. Check coolant level in radiator and add coolant as required.
7. Install radiator cap.

Source: Briggs & Stratton service 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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