The cleaner he mentioned may be worth a shot or some people get lucky with sea foam but most likely the carbs will need to be taken apart and cleaned. One other thing to check before that step is to make sure you dont have any air leaks around the intake boots and manifold.
SOURCE: 2000 2.0 vw shutt down after running 20 min
Replace the fuel pump relay, it's easy and cheap.
SOURCE: I craftsman 20 hp twin mower quits after waarm up
SOUNDS LIKE A FUEL PROBLEM OR DIRT WHAT OTHER SYMPTONS DOES IT HAVE
SOURCE: Stalls after 20 mins. of running fine. (Starving for gas)
From the rear of machine look at the top left of fuel tank for the fuel line.Where line comes out of tank see if it is pinched where it goes down between frame and tank,grab line and see if it moves freely.If that is OK loosen fuel cap after 10 minutes of run time to see if your vent hole in cap is working.These are 2 common problems for the L series mowers.
SOURCE: 2003 Suzuki Volusia 1,600 miles. Runs on choke
do you have a k and n air filter,or the like?
SOURCE: I have a craftsman LT1000 with a B S 20 hp twin
Carb is running a tad rich and the fuel collects in the muffler. My 20 twin has done it since I bought the thing and that was almost 8 years ago.
Cut the engine idle down before you cut the key off and minimize the bang.
Someone else may give a better explanation of the why but it is just annoying and personally after rebuilding the carb and checking the fuel pump on mine it still does it on occasion. Hasn't hurt a thing on in all these years and I actually thing it blows the soot out of the muffler when it does.
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