Question about Briggs & Stratton Power Products 5,550 Watt Portable Generator #30241

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Spark plug gap for AP3923 in DeVILBIS generator

What is the gap for an Autolite AP3923 spark plug in a Briggs & Stratton 19E412-1131-E1 engine on a DeVILBIS GB5000 portable generator? (I cannot locate my manual since we moved and cannot find it online either.)

Thanks.

Robert

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  • yantisr Dec 28, 2008

    Solved. Found the manual at Briggs & Stratton's web site - it is for the 19000-25000 Series engines. (doh!) The gap is 0.030" (0.76 mm).



    But thanks for this site anyway. I will surely be making use of it in the future.



    Robert

  • yantisr Jan 28, 2009

    mrfixit-jerr,



    As I said in my 2nd post on Dec 28 '08:

    (I) "Solved." (it myself) "Found the manual at Briggs & Stratton's web site - it is for the 19000-25000 Series engines. (doh!) The gap is 0.030" (0.76 mm).

    But thanks for this site anyway. I will surely be making use of it in the future.

    Robert"



    Thanks for the followup though.



    Robert

  • 54generator
    54generator May 11, 2010

    Send me the engine model number & I'll reply with the plug gap. The model number is 5-6 digits long and located on one of the engine's metal shrouds.

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1o h.p. generator, starts fine, runs good for short periods then kind of sputters, a single sputter, but every second or so and will run like that for hours, thought running would help, didn't.


I realize you have a 10 Hp Briggs engine. The symtom your describing is often caused by the valve lash gap being to narrow on the EXHAUST valve. You may have a 0.001 gap cold but when it warms up that gap is less and you get just a bit of compression blow by but not enough to impede power output. Over time it will usually get harder and harder to start. The remedy is to reset the valve tappet gap
Depending on what engine you have the GN series the gap for intake and exhaust is 0.002 with the flywheel directly at TDC.
Standard OHV Briggs are adjusted with the flywheel 1/4 inch past TDC to a gap of .004 - .006.
The Jam nuts are torqued 65 - 85 inch lbs

Non OHV engines L-head are adjusted .004 intake and .006 Exhaust at TDC by changing valve stem length with a grinder or replacing the valve if necessary.

If you still have the problem after doing the above... replace the spark Plug... (again even if yours is new) After spark plug replacement you still have the problem respond here and I will help you until this is resolved.

This could also be a case of the fuel mixture just a tad lean..

Thanks for choosing FixYa,
Kelly

Aug 29, 2011 | Briggs & Stratton Briggs Stratton 6200...

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