Lawnmower stalls (TORO)

My 3 year old Toro self propelled lawnmower started stalling. I mowed my lawn for approximately 30 minutes. Then the engine stalled and stopped.
I did some investigation.
If I press the rubber priming bulb and pump gas in it, it runs and then after a little while, dies out again.
If, when I notice that it is dying, I press the bulb, it restarts with vigor and after a short while, tries to die again.
I am desperate to get it going. My own suspicion is that the float is stuck in one way or another. Any thoughts?
thanks
i
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Check the vent in the gas cap....
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Or, some minor blockage in line or filter. Might even be debris in main fuel jet.
Suggest you note current main-jet adjustment (how many turns in to gently bottom it), then remove it with mower outdoors. Clean what you can- your might have to pull the seat part of the jet. Fuel should trickle out the jet; do what it takes until it does (with fuel in tank, of course.)
Put main-jet needle back as it was originally adjusted, and do the std stuff to adjust it.
HTH, J
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I had the same problem with a Toro Selfpropelled I bought used this spring. The lawnmower would run for a couple of seconds after being primed an then would die. I knew there had to be some debris somewhere so this is what I did.
1) Drained the gas tank and put some new gas in with a little carb cleaner 2) Primed the lawn mower 3) Started the mower. Keeping one hand on the kill engine leaver I would reach over and press the priming ball if it felt like the mower was about to die. I was able to keep the lawn mower going like this for 15 minutes and eventually the debris passed through.
I don't know if this will work for you but it did for me.
Cheers
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