Why does gas splash out of small holes in lawn mower gas cap ?

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  #1  
Old 07-05-14, 09:16 PM
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Why does gas splash out of small holes in lawn mower gas cap ?

It is a new Sears push mower. Under the cap is a rubber seal or diaphragm with holes in it. The holes line up so that gas splashes out as I'm mowing. I understand the tank must be vented, but don't want to waste gas.
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  #2  
Old 07-05-14, 11:06 PM
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They're the vent holes. If it's splashing out you probably have it overfilled.
 
  #3  
Old 07-06-14, 03:59 AM
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I agree, I'll get a little seepage out of my mower's gas cap if I overfill it ... I never figured it was a big deal.
btw - welcome to the forums!
 
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Old 07-06-14, 04:50 AM
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If the holes in the rubber are aligned with the holes in the plastic cap you can rotate the rubber with an ice pick or nail so they don't alighn.
 
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