6.75 Briggs Auto choke

Sawfxr said:

Rivets,
It's a brand new carb right out of the box. It was only on the motor for less than a minute before it started surging. I didn't bother pulling the bowl because of the fact it was a new B&S carb and not a used one. I experimented a bit this morning by putting more tension on the governor spring and raising the running RPM's a little. The surging seemed less and was not as bad with about 150-200 more RPM's on the handheld tach.
E.

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JosephP. said:

Am a newbie to site and am having the exact same issues with warm starts on my 675series ready start mower.I have had this issue since 2010 when I purchased it.When I change bags I have to wait. I keep my gas can,gas on mower,carb impeccable.Run my fuel through a 15 micron sock,drain my mower of gas,take float bowl down,etc.etc.etc. Point is I have avoided all the issues of starting my mower that I could think of thinking it was something I may have been doing wrong or missing. Then I started looking up online and finding that I am not alone.I have had my thermostat arm exposed 1/2 a dozen times evaluating and tweaking the adjusting piece on the choke itself.Replaced it,re built the carb and still,,,,starts perfect 1st time cold,then once hot (ZIPPO) nothing. Is there a air filter box and carb that I can go back to,"old school"with. I consider myself to be pretty hands on being as how I run my chainsaws,back pack blowers and have a pretty good basic concept of this stuff but this auto choke just ain't working. Is there a up to date diagnostic check for these systems or is a new carb my best bet? Even a way to manually work the arm once the engine is hot ?????

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