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Hi guys, I'm having an issue with losing power in my left cylinder when the RPMs get anywhere above 4000 or so. It's a 1978 400E. It will idle nicely right around 1200 rpm. The exhaust pressure feels identical on both sides at idle, however the left pipe feels cooler. If I give it some...

Hey everyone, I got my 78 xs400 running this past weekend but the success has been short-lived. I started the process of checking my valve clearances today only to find that one of the adjusting screws appears to have sheared off and took the locking nut with it. Hopefully you can see in...

Hey guys. I just thoroughly cleaned my carbs, installed an in-line fuel filter, replaced my oil, and ordered a new battery. I installed the battery, turned the key...and nothing. No indicator lights, no horn, no turn signals, no starter. I could hear a faint crackle from the battery when I...

Hey guys, I am the new owner of a 1978 XS400. I've bought it in non-running condition (no battery), but by the looks of the bike and notes from the previous owner, it's in great shape. I should note that this is my first bike. Before I look into any modifications I'd like to get it running in...