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Hello, I have a 1981 drum brake xs400 and have rebuilt my engine for the last few months. In the course of the rebuild, I found that the case had a hole and cracked- looks like the chain blew off at one point and knocked off one of the mounting points of the clutch cable cover. I used an ebay...

Hello, I have an 81 xs400 that is almost ready to get up and running. I have done some searching here and on Google about carb diaphragms, mine are old but not punctured. How do you keep them flexible and working smoothly? I read that they are made of nitrile, is there something I can put on...

Hello, I got my motor apart on my 81 xs400 special II, I have the head off and was able to take a look at the cylinders for the first time. This is a first bike and rebuild for me. Compression was at 120 and 110 or so during a quick test when I bought the bike. I was planning to clean...

Hello, I am new here and to motorized bikes. I have worked on various mechanical things and wanted to learn a new skill. I jumped the gun and bought a cheap Craigslist bike (1981 xs400) , now I have to piece together all of the mistakes I have made and see if I can correct them. I should have...