Oil leak from valve cover


Old 06-21-07, 12:20 AM
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Oil leak from valve cover

Hello everyone,
I am having some trouble with my lawn mower, it is scotts brand with the Briggs and Stratton 6.5 HP OHV. I noticed leak comming from the valve cover, so I replaced the gasket and thought that my trouble is over, boy was I wrong. This is my fourth try and it is still leaking like crazy. It takes a little time after it gets worm and then it starts leaking from the the lower bolt. Is it the breather assemly? and how can I check it. Anybody had similar problem? Other than that the mower starts on first or second pull.

Thanks Plesoun
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Old 06-21-07, 01:00 AM
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The valve cover is just stamped out of thin metal right? It could be bent, or have a wrinkle in it, or the head could have a milling mark or defect that is allowing it to leak. You might try adding some silicone sealant to the gasket to help seal any irregulrities.
Old 06-21-07, 03:06 AM
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The rocker (valve, as you put it) attaches to a base plate which in turn mounts to the cylinder head. There is a gasket related to this plate and this is the likely area of leakage. Did you replace the rocker cover gasket with a genuine Briggs part?

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