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Yamaha MX & Off-Road Dirt Bikes
Identifying the jet needle on my 2000 YZ125
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[QUOTE="mathd, post: 1369480, member: 98299"] The needle is probably from a jetting kit since it is supposatly aftermarket. If it is too rich and flood of fuel when it sit over night then. I would check the float level, can cause all the jetting to go rich. Then the needle valve set could throw the jetting off if not sealing properly. also, make sure the gaz cup close correctly and do not cause the bike to flood when it sit. Otherwise you will have to jet it. Before jetting it i also check for the reed valve, this will make a bike hard to start and run more rich, if they are to be replaced. Also make sure the top end is not going. For the jetting there is great guides on this forum. concerning the needle part of it. If you are at the extent of it's adjustment and still need to go leaner [b]on the needle[/b](or richer depend of case) then yes, you will have to change the needle. For the aftermarket needle/kit, this is a sector i have a lack of knowledges in so i cannot comment. [/QUOTE]
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Dirt Bike Discussions By Brand
Yamaha MX & Off-Road Dirt Bikes
Identifying the jet needle on my 2000 YZ125
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