My Briggs 4.5 powered lawn mower doesn't run smoothly. The engine revs and uses more fuel than it should. I think it is running too rich and that the problem stems from ethanol. Does anyone else experience this problem, and do you know what parts need repair?
Philip from MA
I use 10% ethanol in the same engine with no problems the rev sounds like a vacuum leak, possibly a bad gasket. It is easy to replace with info from Google or a small engine rebuild manual. (09/18/2008)
By doityourselfer
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