I have a Briggs 7k standby generator about 4 years with 64 hrs on it. ( 500cc Intek motor) it has not run right from the day i bought it. Fouled plugs, rough idle, LOUD, and backfireing on start up. Finally after 3 1/2 years when I really needed it during a power outage it wouldn't start . Briggs tech came out and said it has a blown head gasket internal governer is bad and probably bent valves, and it blew my muffler in pieces ( still have muffler if anyone wants pictures. The 17 1/2 Intek is a bad design with many flaws as you can read on the Internet . You don't see Briggs on commercial mowers anymore either, usually it's Kohler, Honda or Kawi .I wrote to Briggs to see if they would sell me a replacement engine at cost, they never even responded. DO NOT BY BRIGGS AND STRATTON they are not the company they once were. I bought a Predator generator from harbor frieight on recomdations from 3 people who owned one. The 8500 generator cost $535.00 . One friend has 4, 500 hrs on it another over 1, 200 and another about 750 hrs. It's awesome and runs sooooo sooomth like an electric motor( no vibration like the piece of junk Briggs. And a lot quieter ! Btw I own the following . 1997 Honda harmony tractor ( all original ) runs just like new . 2005 lawn boy 2006 toro snow blower 1990 home lite chain saw 2008 mazda 3s ( 128, 000 miles) 2012 Chevy Colorado 60, 000 miles And more ! My point is I take care of my stuff, Briggs you made a horrible engine and did not handle this properly ! BTW you can't post negative reviews on Briggs site so don't believe the BS that's on there. Had Mazda CX-7 ( 125, 000 miles) Home lite chain saw 1990 home lite chainsaw