Question about 2001 Yamaha WR 426 F

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My wr starts great 1st or second kick, runs well for a few minutes then just dies and then wont kick start, will roll start just.

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Hello and welcome to Fixya, First we need to make sure your getting proper fuel flow to your carb. Remove line and make sure its coming out well and not just dripping. If that seems ok, then I would remove your carb and check your float height to spec. Another thing you might check is run it and as soon as the problem occurs, remove the spark plug, put the plug cap back on and lay the plug against the cylinder or a good ground (make sure there is no gas puddles) then kick over the engine while watching your plug, if its not sparking then you may have a problem with the coil or stator. Try these and if you still are having trouble let me know and I will be happy to assist you further until we get it figured out. Thanks for using Fixya, Cycleworx157

Posted on Dec 30, 2010

  • cycleworx157 Dec 30, 2010

    Pulser coil, not stator. Sorry I was working on 2 differnt problems. So like I said before if everything above checks out then check your coil and your pulser coil.

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How did you check the fuel filter? Disconnecting it from the fuel line that goes to the carb is the best way, making sure the gas is turned on under the tank. Bleed off a little gas into a can or something just to make sure the filter isn't plugged.

The last thing I'd do is take off the air filter and spray a little starting fluid in the carb. It may start and run several times if there is old gas in there somewhere. Remember the bowl on the carb is probably still full of old gas. After some fresh fuel reaches the plug it should start and continue to run.

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