Originally Posted By: JTK
Yep, like said, I'd dump the fuel, add fresh with a heavy dose of seafoam.
Worst case, like yeehaw suggested, a bowl cleaning.
I'd also check the sparkplug just to verify it's a not a Chinese bubble gum and paper mache' special. Swap it out with a quality name brand if so.
Joel
Hagar's Dustbin (Home Depot) has fine wire center electrode Champion plugs for the Briggs engine family, they don't cost much ..if you're going to change the plug might as well put in a good one.