My Briggs and startton engine is running too rich.

Its revs oscillate wildly in operation and it only runs properly when it is running out of fuel, and then only for 5 - 10 seconds

The spark plug gets very black with carbon soot and needs cleaning

Can anyone help ?

Nick, June 2008

screen between fuel tank and carb is dirty take carb off clean screen should be cool then

JoeP, June 2008

Replace the carb diaphragm. Almost guaranteed fix.

phil_saunders@bigfoot.com

Phil Saunders, June 2008