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I had same problem, tip broke off and got stuck, but I actually managed to push it out from inside of the carb. Got few small scratches on the inside of carb, sanded them down with very fine sand paper and luckily it still works fine.

SOLVED! Finally actually found the problem. One ignition point was not opening and closing fast enough when the engine was running. The small shaft what the point moves on had really small amount of rust. Opened and closed correctly when just turning the engine by hand, but not fast enough when...

Few days ago went to garage and found out that one cylinder is actually not firing, don't know how I missed it last time. Bought new spark plugs and got it working. Now the right cylinder (the one that was not working) backfires to the carbs. Felt like the warmer the engine gets the more it...

Its 1980. Bike originally looked like that, but had some mods done to it and was cosmetically in bad condition when I bought it (had some bad paintjobs done to it, but mechanically felt good): 2560px-Yamaha_XS-400.JPG (2560×1862) (wikimedia.org) I'll take some photos and do the floats to 26mm...

Hi I have some problems with my XS400. I bought it last year and it was running fine, took it totally apart, painted the frame and did some rebuilding over the winter and now finished it. I got it running pretty good right after the rebuild, was revving great, idling great, but then I...

Does anyone have any idea, what I messed up? :D

I'm 18 years old guy. This summer I bought my first bike, 1980 XS400. I had very little knowledge about engines. I have done a lot of mechanical work with my own car, but never had the courage to touch the engine in fear of messing something up. Now I started stripping the bike down, to get the...