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Hi everyone, I'm in need of a new camshaft as I broke the PMA bolt threads attempting to remove a broken bolt. If anyone has one, please let me know.

Hi everyone. I'm starting a charging system thread, and a thousand apologies for that. My issue is, near as I can tell, a new one, and one that's virtually impossible to Google. My problem is that my new combined reg/rec seems to be outputting 12V flat to the battery. Just try searching for...

It's getting close to the end of the season up here, although we're having great weather right now. I've got a bunch of maintenance and upgrade items waiting for when I finally park her for the winter so I figured I'd start one of these threads instead of making more every time a little thing...

So, a while ago I had a tappet locknut work itself loose and fall into the valvetrain oil galleries, which necessitated removing the valve cover to get at it. Ever since I've had an oil leak from around the camshaft seal. I replaced the seal with a NOS Yamaha part but the leak continued. I...

Yesterday I adjusted the valves on my bike. Today I heard a ticking coming from the head so I took it over to my friend's garage where I work on it and pulled the tappet covers off to check how they were set. I discovered that the right side intake tappet's locknut was missing. I guess I didn't...

http://www.bikeexif.com/motorcycle-wiring This is pretty elementary, but I found it helpful and thought other people might too.

Does anyone know the measurements for the front brake bolt pattern? Do bike brakes have standardized patterns the way car wheels do? I can measure my bike's brakes but I'd rather not pull the front end apart if someone already knows.

To my dismay, I discovered this evening that my front brake piston is leaking. I rebuilt the caliper a couple months ago and haven't been able to ride yet, but it looks like I get to rebuild again. Parts n' More lists a front piston compatible with 77-79 XSs, but mine's an 81. Further, the part...

I had my handlebars off in order to open up the forks and replace the fork oil, and they hung upside down for about a week. When I put the forks back together and bolted the handlebars back upright, I had almost no resistance from the brake lever, so I rebled the brakes and got them stiffened up...

Does anyone happen to know the torque spec for carb boots? I just got new ones to replace the ruinously cracked ones on my bike, but I can't find a spec anywhere. Neither of the shop manuals I have list it, and I've dug around the archive here without success. Also, do I have to do anything...

So, I'm an idiot (if my posts up to this point haven't made that clear). I lost my bike keys somewhere this weekend and after checking with all the places I went around the time they went missing I am pretty sure they're gone for good. Has anyone had to redo the keyed parts of their bike and/or...

Hi, I'm newly the owner of a 1980 XS400 and brand new to this forum (obviously). I've been lurking for a couple of weeks and your various links to manuals and tech advice has already proven helpful. Now I have a specific question: are there differences in thread pitch or diameter for the oilpan...