Toro lawn mower sputters and stops working after running

Check that the vent in the fuel tank lid is clear.

if it stopped running after hitting something with the blade check the key on the flywheel where it meets the crank

Sounds like the automatic choke to me. When it acts up next time, remove the air filter, and observe the butterfly valve on the carb. Hold it open with a screwdriver, and see if it starts and runs. I have found that wireing the thing wide open solved my Toro problems. The mower is still under factory warrenty however, so you can always take it back! Hope this helps my friend!

I hope this helps:
http://www.fixya.com/support/r8367428-starts_dies_common_engine_problem

Try an few of these :

http://www.fixya.com/support/r8406168-top_10_lawn_mower_problems_solutions

good luck
Joe

check fuel in the tank
check for blocked filter in the tank
check for full fuel flow to the carby
overhaul the carby

it sounds like the ignition coil is shorting out inside once it gets hot. or it could be the spark plug as well.

Check gas line. Check for a gas filter and replace it. Replace spark plug. If the prob continues - it might need the carb rebuilt.. If a small engine sits to long without being run - the gas will shellac in the carb and render it to not function properly..

have a great day !

Mower stops running after mowing about 5 minutes. acting like it was running out of gas unitl eventually stops. I wait 10 minutes and then it restarts, runs good, then erratic...then quits again?

Did you drain the fuel before you put it away? If not then you should drain the fuel and clean the carb. Gas when in lawn mowers and any other small gas engine will turn into a slim in a way and will block the carb. Drain the fuel and clean the carb system will run great when that is done