Yanmar — Water separator draining
Maintenance
From a Yanmar service manual — check it applies to your exact model before use.
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Procedure
- Prepare a waste oil container
- Close the fuel cock
- Loosen the drain cock at the bottom of the water separator and drain water
- Tighten the drain cock with hand
- Be sure to bleed air in the fuel system
Source: Yanmar 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.