stuck

Hey, new to the xs world and new to the forum. I just picked a 1978 xs400. It's been sitting for a long time and the motor was locked up so I started pulling it apart to see what I could find. I put some marvel in the cylinders and let it sit. Pulled the side cover and put a wrench on the crank...

Hey, So I've been working on getting my "new" 79 xs400 onto the road, and the problem I'm facing is the piston in the rear master cylinder is stuck inside the cylinder. I bought a rebuild kit for it that replaces the boot, seals and the spring, but that isn't really going to help if I can't...

Hey Everyone! After hijacking a few threads, I figured I'd start my own. I'm rebuilding my 1981 Yamaha XS400H (4R5 engine). It's my first bike. I'm pretty mechanically inclined but I've never worked on anything like this before. Here goes nothing… A Little Intro: Bought this guy for $600 CAD...

Hey guys, I've done some digging and couldn't find anything that addressed this so please forgive me if it has and i missed it: Im tearing down my 78 xs400 motor and got the timing chain, ohc, valve cover, and top head removed successfully, but I'm struggling to get the bottom head section...