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My son has a 1980 xs 400. He drove it to work today and ran it out of gas. While at work the left choke was left open. Late in the evening we fill the take and notices gas pouring out of the left air filter. Question: is this due to the choke being left open or possibly a float issue? Or...

I'm currently cleaning and replacing worn out parts in my 1982 Yamaha 400 SJ carburetor. I recently noticed two of the same jets were different.....one had multiple holes and the other had none (see attached photo). I'm not sure if it makes a difference when I come to placing the jet in either...

I recently decided to take apart and rebuild my 1981 XS400 carb. After removing the float bowl and floats, I notice one of the brass floats had several pin hole. So I decided to bust out the solder gun and do some repair on my own. I bautched the solder job and will have to buy a new float...

I recently started rebuilding a carburetor for my 1980 xs400 and I'm having trouble getting the rod removed that hold the float in place. Any suggestion for a technique for removal??

First time in the forum. Hello everyone, glad to be part of this group of Yamaha enthusiast. My son and recently bought a 1980 Yamaha xs400 and started wrenching on it to bring it back to life. Discovered this forum and has been very helpful. Glad to be a part of it. Current issue: my son...