Question about Yamaha YZ 250 Motorcycles

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Whats the air screw setting for a yz 250 93model

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One and a half turns out,,from fully screwed in,,,,give it half a turn in or out and when the bike idles at its highest,,you are spot on and can then turn down the idle from the idle screw.

Posted on Mar 25, 2011

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YZ 250 mixture screw settings


http://www.pdfmotomanual.com/index.php?r=site/page&view=manuales&order=t&key=Y&make=1752&lang=ENG

Loads of downloadable manuals on the above link....all free. You might find what you are looking for amongst them.

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Hi, Anonymous and the usual suspects are:
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Hi, Anonymous for this scenario you will need your service/owners manual if you can't find the first and best tool you ever bought for your Yamaha, despair not, for a mere $0 you can download another one. For more information about your issue and valuable "FREE" downloads that you will need please click on the links below. Good luck and have a nice day.
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I DONT KNOW WHAT MY AIR FULE SCROW AND IDEL SCROOW ARE SUPOST TO BE SET


Hi..both screws r on outside of carb your air flow screw is the bigger of the 2 with a spring on it usually by top where throttle body is.. Outher is kinda set in on same side b careful u dont loose lil washer and turn small turns to fix your issue.good luck bud..

Sep 14, 2011 | 2003 Yamaha YZ 125

1 Answer

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Hi, Hondarcn44 for this scenario you will need your service/owners manual if you can't find the first and best tool you ever bought for your Yamaha, despair not, for a mere $0 you can download another one. For more information about your issue and valuable "FREE" downloads that you will need please click on the links below. Good luck and have a nice day.
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2000 Yamaha YZ 80 poor idling


Hi, Shaundavies6 and the usual suspects are:
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7. Contaminated or plugged low-speed circuit.
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For more information about your issue and valuable "FREE" downloads that you will need please click on the blue links below. Good luck and have a wonderful day.
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Oct 24, 2010 | Yamaha Motorcycles

1 Answer

I have a 2003 Yz 250F. I start the bike and warm it up and push in the cold starter knob the bike will not Idle. please help.


turn the idle screw in and check the setting on the air fuel mixture screw. is the bike all stock?

Jun 09, 2009 | 2004 Yamaha YZ 250 F

1 Answer

Yz 125cc 2003


Black spark plug means too rich , you will have to replace the spark plug since it has foul up and reset the air mixture screw on the carburator 2 and 1/2 turns outwards.
Check the air filter too.
Hope this helps.

May 23, 2009 | 2003 Yamaha YZ 125

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