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Dirt Bike Discussions By Brand
KTM MX & Off-Road Dirt Bikes
525 and maybe the 450's jetting problems
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[QUOTE="JC Soto, post: 474882, member: 35291"] This is an old thread, but the answer to this carb problem might have been found! Per Mike (at Cycle Zone KTM), he got the carb I sent him back from KTM USA. The problem KTM found with the original carb was on the slide assembly. KTM claims that there is a plate on the slide assembly that was installed backwards. KTM reversed the orientation of this plate and the thing works as it should! It kind of makes sense, if the slide is not fully seating and sealing the air intake, you would need a lot of fuel to get a better fuel/air mix (i.e. therefore the increase pilot jet to a 55 to get some response). This is an indication that a few badly assembled carbs from Keihin slipped :scream: ; as there has been about 6 bikes that I know of with this problem. I can say that because I did not remove that slide from the original carb, and it would not work when it came on my brand new bike. So, if this is the problem it is an easy fix. For those who have this problem, try changing the orientation of the slide cover. :thumb: JC [/QUOTE]
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Dirt Bike Discussions By Brand
KTM MX & Off-Road Dirt Bikes
525 and maybe the 450's jetting problems
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