Question about 2003 Yamaha YZ 250
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2001 YZ 250 sticking float Yamaha 2 Stroke
Carburetor float needle and seat trick
YAMAHA YZ250 LC Owner Service Manual
OEM parts for Yamaha
Posted on Jul 26, 2016
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Posted on Jan 02, 2017
SOURCE: starts easy wont rev at all
hi m8y,, soundz to me the float heights are wrong,,have u tried that at all, u can only check that when the carbs are taken out and turned upside down,, all four floats should be the same height,, check wot the measurements should be in the manual,,if u have one,, if u havent try these guyz 4 a downloadable manual,,, www.repairmanual.com ,, if all is cool and correct,come back in m8 and il take u threw the next step,, cheers
Posted on Apr 28, 2009
The pump has a cut-off relay that senses the pressure and stops the pump.If the floats works properly they will lift the nose that cut the gas off and the relay will cut the power off the pump.
If that is not happening then something is wrong with the wiring.
Posted on Jun 14, 2009
The adjuster tang on the float (in green) rises and falls to maintain fuel level. It pushes on the float needle to stop the flow and drops to let fuel in. Did you loose the needle? If all parts are there, gently bend the tang upward to lower the gas level in the carb.
A “very helpful” rating for this answer? Thanks!
Posted on Jun 28, 2009
By spraying it you may have inadvertently blown dirt or grime even further into the carb. It doesn't take much to cause the float to stick open. This would result in a constant flow of fuel into the bowl. Once filled it will escape via the overflow.
The best way to clean the carb is to remove it from the motor, disassemble it and clean it using a small brush. If you have never done this before just take you time and make sure you have a clean work space to do this in. There are really very few parts to this type of carburetor and once you have done it a couple time you can take it apart clean it and have it back on in under an hour.
Hope this helps.
Posted on Sep 03, 2009
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