Question about Yamaha YZ 125 Motorcycles
HAS BEEN SITTING UP FOR A YEAR, FRESH GAS BUT WHEN CRANK IT (WITH CHOKE) IT REVS HIGH AND IF PUSH CHOKE DOWN IT REVS EVEN HIGHER. IT WILL IDLE AND RUN OK IF CHOKE IS HELD HALF WAY.
One thing I've seen on the initial startup high rev as a problem - make sure you're getting the proper gas flow from the tank. Make sure the petcock or filters inside the tank if applicable aren't clogged. If it's able to start - and for example your air/fuel mixture is set for standard - if you're not getting the proper amount of gas - in essence you're running it hot and fast - because it's running super lean with more air than fuel. It can sometimes run faster - it will definitely run hotter and can lead to even more problems.
Posted on Feb 16, 2015
Clean the carb out !
Posted on Feb 18, 2014
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Posted on Jan 02, 2017
SOURCE: Yamaha TTR 125 L won't idle
i cleaned the carb on the bike and put it back together and now it is as if the float is stuck open and is just dumping gas out of the carb all over the ground.
Posted on Sep 02, 2009
Here are two solutions for you:
A - Take the carberator off and soak it in some good quality carb cleaner for about 1/2 an hour. That should take care of any residue in the carbs.
B - Alternatively (and for the less technical minded) there is a great product called Sea Foam. Try to find it at your local CSK auto/NAPA/Wal-Mart. Pour a small amount (maybe 1/4 ounce) into each cylinder chamber (take out the spark plugs), try to pour a small amount into the carbs (a turkey baster works great for this), and pour the rest into the gas tank. Let it sit for 5-10 minutes, then start it up. *NOTE - the bike will start VERY hard at first until it burns through what's in the cylinders. ALSO the fumes will be EXTREMELY strong and suffocating - make sure you do this OUTDOORS preferably, or at least in a VERY well ventilated area.
Good luck - I know how frustrating these things can be! :)
P.S. - I am a proud owner of a V-Star 1300 - great bikes! :)
Posted on May 26, 2009
You don't decode it. It is only a production run series number. Mororcycles are like cars in that respect. It is the frame number, AKA the "VIN number", is what carries all the information. Call a dealer with the frame number and he can tell you year, paint color, specific model and more. They may have a problem if the bike is too old. Yamaha changed to a newer code system a few years back.
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Posted on Aug 28, 2009
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