Search results

1980 Yamaha XS 400 Older style tank Runs Lots of newer parts (brakes, lithium battery with tender, cables, carb internals, etc.) Also new (not installed yet) mufflers, speedo, and tach Clean title (registration is lapsed) Bike is from the west coast and has little rust Would make a great cafe...

I've been riding my bike to work the past few days. It starts great (enriched out all the way at first then clicked in after a few moments. And it runs fine. Then about the third stop light I get to (3 miles?) it starts hanging at about 3k at stops. If I turn out the idle speed screw it drops...

I am attempting to adjust the clutch. I followed the instructions in the service manual. I can switch gears just fine it even seems easy... While in gear the back wheel spins with the clutch lever pulled. Sometimes the wheel spins in neutral sometimes it doesn't. If the bike is in first gear I...

Today I replaced my petcock with the mikes xs non vacuum one. I also replaced my old floats with new ones (brass @ 26mm) the bike starts fine and seems to idle fine. Then I rode it around the block and at stops it was revving at 3-4k. I lowered the idle speed screw and it was idling fine at...

In November, I was riding to work and everything had been going well for a few days. About 2 miles from my house it died and I ended up getting it towed home. It fell over in the trailer (of course). The clutch lever, perch, and cable broke but everything else was fine and the tow company...

I've been riding around enjoying the bike but the other day I was reading on the forum that the oil indicator light should come on when you turn the key/start it. My light has never come on. It seems to be running pretty good so assume that the oil is flowing but is there an easy way to be sure...

I feel like there may be a knock and that the valve are excessively loud but I have no experience with engine sounds and have no correctly running xs400 to compare with so any input would be helpful and appreciated.

It seems so close to running properly and it's honestly becoming more depressing than exciting to work on. I start the bike with the choke out and after about 30 seconds rpms increase so I close it some and again until it's all the way in. At this point the bike idles at 12-1400 rpm. If I...

I got these (http://www.dimecitycycles.com/vintage-cafe-racer-caferacer-bobber-brat-chopper-custom-motorcycle-exhaust-parts-17-inch-reverse-cone-megaphone-muffler-80-84030.html) from dime city cycles I don't plan to change the air filters will I need to rejet? Would that be up on the main, the...

Hi I am going to need to take apart my carbs again and I promised myself that if I did I would replace all the screws (some are stripped) on the body of the carb with stainless steel socket head (Allen) screws does anyone know what sizes and how many of each to redo a set of 1980 xs400g bs34s? I...

I've read lots of posts on this. I have gotten my bike to the point where it is running great but after I ride a couple miles I get gas in the oil. It does not seem to be leaking into air filters and it's not the petcock leaking because I have installed an inline fuel cut off valve. I've read it...

I was about to do the rewire for the charging system but my friend talked me into doing more tests. The charging system passed all of the tests. Except actually charging. I replaced the voltage regulator and it started charging but not much. The PO put in some pretty shoddy fuse holders and we...

I got my bike running well thanks to this site but the charing system is not working. I have read every thread on this site on this issue and they have been extremely helpful. Here's how the tests went. Initial alternator test showed that the bike is not charging. I found that it had a...

So my bike was up and running (many thanks to xs400.com) but the other day it wouldn't start. Seems like the clutch is not engaging. So I thought it was because I switched to clubmans and had extra length and it's an old cable. I rerouted and adjusted (very tight) but still doesn't seem to...

Thanks to much help from this site I've got my bike running. Today I went to drive it to the dmv and the battery died. I've run it several times with driving and may have left the key on for 20 min. Is that enough to discharge a new battery? Will it sitting in the bike unused a couple weeks...

Hello again, I'll start by saying thanks everyone for helping me so far the advice here is sooo helpful. Now the problem is. My bike won't start. I have checked spark. (Plugs are old spark looks good though) I have just rebuilt the carbs. (New gaskets,New jets air screwed out 1 1/4 turn...

Like the title says I'm looking for a fuel tank, one of the square style ones. Thanks everyone.

Just bought my first bike. I believe it is a 1980 xs400 special II based on the title, side cover, and drum brakes. It need some work but its what I expected for $400. It currently is not running. It has almost exactly 10,000 miles. It has a dent in the tank. Needs a battery. Carbs cleaned. New...