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Fuel leaking from carb

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I have a 2000 WR400 that is leaking fuel from the brass inlet piece on the left side of the carb. I tried to replace the O-rings inside but can't find any that fit.

The local Yamaha dealership's schematic doesn't show the o-rings so I don't what to order. Does anyone know where I can find o-rings to replace the worn ones on the brass inlet piece?

ImageUploadedByThumper Talk1407892256.992361.jpgImageUploadedByThumper Talk1407892277.493766.jpg

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Like they said, try to find a fatter ring that will not melt when gas hits it.

I would also put a dab of Yamabond on it when you install it. Can't hurt.

That stuff is great. I havn't used regular RTV for anything in years.

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My 2002 WR426 did the same thing and I was referred to this company by a local KTM dealer.

 

Sudco International

 

www.sudco.com

 

They have any and all parts for your carb.

 

The O-Rings are an oddball size and cannot be found in hardware stores.

Sealant of any kind won't work as a permanent fix because the fitting is designed to rotate.

 

Hope this helps.

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Any updates on this?  My 2007 just started this.  Any part numbers?  Thanks!

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