Question about Craftsman 17.5 hp 42 in. Deck Lawn Tractor - CA Model

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Craftsman 20 hp 42 in deck leaks gas into the oil pan.

I have had to change the oil in my craftsman 4 times this year because after i am done mowing and it sits, gas leaks through the carb and into the oil pan. We are talking entire tanks of gas. I have taken the carb apart twice and completely cleaned with cleaner and put back together just to have it happen again. Is there something I am missing? Is this a common problem with Briggs engines? Please help as I don't want to change the oil everytime I want to mow...

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  • Anonymous Mar 31, 2014

    craftsman 310 707 17 HP gas and oil please help

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  • 284 Answers

Could put a inline shut off valve in the fuel line and shut it off when you finish or fix it right? .
you need to replace the float the needle valve and seat ( the part that the needle valve pushes against to stop the gas inlet maintained by float level.
You need to find you engine mod# type# code# code is not important
look on overhead valve covers for these #s they are right in line wherever you find the #s if its an overhead valve engine
go to partstree.com and find briggs logo and click on it and enter your #s or choose from the ones they give and match them with yours and you should be able to find the part numbers you need for this carb.and get them locally or order from them.
maybe this will help cure your issue

Posted on Jun 29, 2009

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Posted on Jan 02, 2017

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