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I know this isn't an XS400, but I thought you Yamaha people would like this. 1966, Yamaha: YL-1 100cc Twin cylinder This abandoned bike somehow found its way to me, with no title, no seat and missing several parts. It sat in my yard for several months untouched (other than picking away...

Can't seem to find a good source. If anyone has spare in decent condition or know where I can get new ones as a set for a reasonable price.

It seems like the previous owner tightened down the sump cover bolts too tight or something and stripped the metal threads in the bottom of the engine... I just changed the oil and after cleaning the sump and stuff, when i put the sump cover back on, some of the bolts would not tighten down...

can't find a clear answer using the search bar or google. what would cause an engine to not fully engage neutral during a drive? shift to neutral at a stop light. green light comes on letting you know you're in neutral, let out the clutch thinking you're in neutral. Bike bumps forward and...

Im looking at these spark plugs and am wondering about them...:umm: Anyone try these? Increase in power or fuel efficiency? Did you have to change any tuning of the bike...

(xs400 2e) starts up real good every time, and rides very smooth.The rpms drop back to idle nice and quick for the first 20 minutes of riding. After about 20 - 30 minutes of not very hard riding around town, the rpms start to take longer to drop back to idle, which i keep at around 1.3k. Ill...

Sorry for the random first post!, I have an xs400 here and am looking at some parts. I am not very experienced in motorcycle tech, but i am wondering about the condition of this cylinder head. Its from a bike thats got like 1500 miles on it, but sat for a really long time.