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Hello All 1977 XS400, 11K miles The ask: What font master cylinder replacement do you recommend for my motorcycle? The details: The original front master cylinder was corroded beyond repair. I bought two types of replacement master cylinders, one 16mm bore and another 12mm bore. They are the...

Hello, 1978 XS400, 12K miles The original front master cylinder was completely seized when I bought it. I did a quick search for a generic replacement ($20) and installed it. I bled the brakes as much as I could, even used a suction pump at the bleed valve to get every tiny bit of air out. The...

Hello all, I wanted to provide further update. In summary, I deem my project to replace the clutch plates and friction discs a success. My motorcycle rides much better now, but still not perfect. Here are a few notes for reference: 1. I placed the motorcycle in neutral before beginning 2. I...

Hello again, I just wanted to post an update to the clutch replacement project I am currently working on. I would estimate I am 90% done. Where I am having some trouble is the clutch cable adjustment. The manual talks about two locations for adjusting the clutch cable. I attached a couple of...

Another couple of question as I get ready to replace the clutch plates: 1. For the clutch plates, One side is slightly rounded at the teeth (or beveled). The other side is perfectly flat. should the flat side face inside or outside? 2. For the kickstart, I read a few places on this forum that...

Thanks. I was able to find the manual. It seems that there are two versions of the manual? One of them is a single download in a dropbox titled Supplementary Service Manual. The other is located on this site and comes in three parts for download. I'm not sure what the title of this document is...

Thanks for the reply. I am always looking to make an informed decision. This is the information I am looking for to help me make my decision.

Hello. 1978 XS400, 9.5K - restoration project. Has anyone done a two-to-one carburetor conversion on an XS400? I'm considering doing that and using a single VM34 carburetor. Any advice or pointing me in the right direction is greatly appreciated. The main question I have is if a two-to-one...

Hello. 1978 XS400, 9.5K - restoration project. Searched the forums but couldn't quite find an answer to a specific question I had. I'm getting ready to replace the clutch plates and friction discs. The only thing I wasn't sure of is what gear should the motorcycle be in? Is neutral fine? Also...