atv will not stay running?

i have a yamaha kodiak 400 4x4 it will start and run for about 30 -45 seconds it stops and will not start again until it sits for 30 minutes or more, it has a new plug , fresh clean gas ,clean air filter , what is wrong

08 700R SE2011-06-01T17:04:27Z

Favorite Answer

Make sure you are getting a steady supply of fuel to the carb and that your gas tank is venting properly. If it runs good for 30-45 seconds I don't see how it could be the carb, spark, or compression. If the float in the carb was stuck shut, it wouldn't be getting any gas. My vote goes for plugged tank venting.

Cameron2015-03-07T18:20:23Z

it could be the magnets around your stator sometimes they come loose and move from their positions causing sudden stall after a few seconds I have read about this problem and some guys are unlucky they can slide off the magneto and destroy your stator. if I were you I would take the sideplate off and check them. could be a quick simple fix and stop a worse one from happening

Honda XR650RRRRR2011-06-01T16:03:20Z

Make sure your gas tank is venting properly and not starving your carb for fuel.

guardrailjim2011-06-01T15:42:42Z

Possible electrical problem.
Check if the spark plug fires when it won't run.

?2011-06-01T12:40:10Z

check your fuel lines and carburetor. make sure your petcock, if it has one, is working properly. it sounds like its just running out of fuel and takes some time for fuel to run back through the lines.