190c 54 inch deck bought in 2006. Changed fuel filter, fuel pump and vacuum hose, new gas, no leaks, cleaned gas cap breather vent, no obstructions in fuel line. Filter used to run dry in 1/2 hour

SOURCE: New MasterCut mower runs erratic & gasoline leak around fuel cap.

as it is a new machine if it has not been p.d.id by dealer it may be that some test fuel residue is in carburettor which is causing this,you need do drain of carburettor of all fuel,remove bowl and spray clean useing either air or carb cleaner spray(should get from local autoparts store) note try to spray up centre of carb as may be a jet up there as well,refitt bowl and make sure you use fresh fuel this should solve problem,with unstable running fuel may be finding a way back through breather at carb with the vibration and may be cured after you have done carb

SOURCE: Craftsman 15.5 HP gets hot and shuts off, will restart and run

Remove and clean the carburetor....its clogged with junk.

SOURCE: Hello I have a Craftsman eager 1 Lawn Mower model

The breather hose has nothing to do with it not starting. It starts when you prime the carb and dies when that gas is used up. Being a Tecumseh. it's most likely the bowl nut/jet stopped up. Unscrew the bowl nut and clean it. Look cery carefully at the top of the threads. There is probably a very small hole there also and it will not run if it is not open.

Testimonial: "Carb kit was on the money installed it on8/20/09 Started and Runs fine"

SOURCE: My John Deere stx46 riding

Try loosening the gas cap a little...... there is a normally a small breather hole in the top or underside just above the seal which allows a small amount of air to enter into the fuel tank. Sometimes this breather hole gets clogged..... stopping air from entering into the fuel tank as fuel is used. Eventualy enough vacume pressure accumulates inside he tank causing a vapor lock. If you loosen your fuel cap slightly.... this should prevent the problem your experiencing. If it does... try soaking cap in deisel fuel or heating oil overnight, remove and allow to dry prior to re-installing. If the problem persists after a good soak, only option is to replace fuel cap. GOOD LUCK!

SOURCE: craftsman riding mower 2003 DLT 3000 ,Blowing oil out of the fuel

Head gasket is blowed .Its building pressure in the crankcase seen it twice. Remove the head and check for a blowed out spot between piston and the valve side