Kohler — Testing Pump

Testing & diagnosis

From a Kohler service manual covering: WA 2.0, WA 3.0, WB 2.0, WB 3.0. Check it applies to your exact model before use.

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Procedure

1. Before running, check oil and slowly pull engine over with retractable starter to ensure nothing is binding.
2. Fill with prime water and start engine.
3. After warm up run engine at full throttle and check vacuum with a vacuum tester for leaks.
4. A vacuum of 20 to 25 lbs. at sea level should be read within 5 seconds.

Source: Kohler 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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