Question about Briggs & Stratton Garden
I have a Briggs & Stratton lawnmwer. It tends to cut out once in a while. I have found that by tapping the base of the carburetor it will resume service. In the past (3 or 4 years ago) I did take the carb apart and clean the moving parts with petrol as I suspect the float sticks . I just had the mower serviced and am reluctant to bring it back (I never told him about the problem -it slipped my mind) Would my "diagnosis " sound right? Have I just got a carb that is prone to sticking even after it has been cleaned and will my tapping (not too forceful!) keep on top of the situation(it seems intermittent and hasn't really worsened over the years ,touch wood.
Nex ttime you clean it. see if the needle valve attached to the float is sticking.if it is,roll up a piece of fine grit sandpaper .stick it in needle valve seat and roll it around sanding off any varnished gas residue.clean the side of needle as well. touch sand the the tip or let it sit in carb cleaner. that will damage it .
Posted on Oct 20, 2014
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Posted on Jan 02, 2017
A lot of time when the small motors on these push mowers surge it is a governing spring that is weak or broke. It does not hold enough tension and causes the valve to fluctuate. I have fixed this many time for a relatively cheap amount (under $5).
Posted on Jun 16, 2009
On B&S OHV it is always wise to verify the valve clearance is within specification. Correct setting should be in your engine manual or you can get it at www.briggsandstratton.com. Good luck.
Posted on Jun 26, 2009
There is still either water or debree contaminating the fuel system. Surging is usually debree, empty and flush the tank with gas or Iso alcohol, disassemble carb soak in solvent for 30 minutes blow out the carb passages, reassemble and if the problem persists run engine at top rpm with air cleaner off and block off carb intake with hand, this will stall the motor restart and repeat 4 - 5 times this wiil draw out any debree or other blockage in the carb.
Posted on Jul 25, 2009
Most likely problem is dirt?moisture in the carburetor float bowl. You would have to remove the bowl, clean it out and also clean the main jet up in the center of the carburetor. Another problem could be that the governor is out of adjustment but this is not something a novice could or should do
Posted on Sep 14, 2009
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