99yz 400f shuts off after 10 minutes

4 replies to this topic
  • benji sall

Posted July 20, 2011 - 06:27 PM


has anybody had this problem? the bike is shutting off after 10 minutes and will only get a burp after 15 or 20 kicks but when it cools off itll start right back up and then do the same thing over again i have no dirt in the fuel double checked that and i am running a mixture of 110 and 93 octane

  • grayracer513

Posted July 20, 2011 - 08:35 PM


Probably have the idle too rich.

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  • benji sall

Posted July 23, 2011 - 06:52 AM


just the idle screw u mean or thr pilot jetis too big but i rode it the time before for 4 hours and it was fine

  • QuietFlight

Posted July 23, 2011 - 08:14 AM


both have an effect

  • benji sall

Posted August 09, 2011 - 05:59 PM


i used a ginnie pig bike and put coil and wire and boot on my yz 400f and rode it 2 nights in a row so that means coil was breaking down thanks everybody for the replys

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