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Hi y'all. I was here for awhile, then I wasn't. Some big life stuff that made me forget motorcycles for awhile. But I am back. Got a 1979 xs400 which I rode to work for two years. I'm a newbie mechanic who is really finding pleasure in learning. I decided to take the bike down to it's bits...

Newbie working on my first bike, 79 xs400, and looking at the discs, they're grooved (and mildly rusty) so I'm going to have to do something about that. The groves are quite visible, but they don't feel that bad and I'm wondering if there is anything I can do to renovate them myself w/o paying...

Hey there. I'm Aaron Carver. Motorcycle newbie. Yamahaclub newbie. Milwaukee Native and resident. Proud owner of a 1979 Yamaha xs400. I used to ride a Honda Ruckus--A fun bike with not enough pep. Thanks to everyone for all the information on this great site. I've left some posts...

Can anyone tell me what a relay assembly is and what it does? On one of the wiring diagrams I found it was referred to as the "headlight cutout relay" but according to http://www.yamaha-motor.com/sport/parts/home.aspx it is the "Relay assembly". much thanks in advance

So, I have a 79 xs400 that I've owned for a few years. I had it running and drove it to work somewhat regularly but now it's sat for two years. When it ran it had some short circuit problems...Always blowing the same fuse. My buddy put what he called a surge fuse in it and that solved the...