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What is causing my riding lawnmower to die after about 15 minutes?

Craftsman model 917273404 riding lawn mower. After it dies the first time, you can wait a minute or two & it will start up again, but will run anywhere from a few seconds to a few minutes before it dies again.

Check your fuel cap. When it starts to die out, loosen the cap and see if the problem goes away. If it does, then the fuel cap vent is clogged.

If that's not what's causing your problem, it could really be a lot of things. Normally we see the problem where it dies and won't start for several hours. But for it to start back after just a few mins I would have to think it's a fueling issue of one form or another.

The fuel shutoff solenoid could be losing power or coming unplugged slightly. You can check that by pushing the plug (if it has one, some are direct wired) and making sure it's secure. To see if it's working you can turn the key off and on. You should be able to hear it "click" or at least feel it click.