If you’re running the V twin pumper carb or just a standard V twin carb like found on the Kohler Command CHxxx models, you’ll be familiar with the little O rings on the little emulsion tube in the carb. Even rebuild kits will ship with the incorrect O rings from time to time.
Here’s the O rings I found to replace the originals
McMaster-Carr 9262K441 O ring is 3mm ID 5mm OD 1mm thick.
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