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There seems to be a dead spot in the throttle at low rpm. Mainly when taking off or doing less then 5mph and you give some gas. Not like it's coughing, but as if you were to kill the bike then hit the throttle. If I recall right, it's about 1500 2000 rpm when this happens. It's a pain...

Well a lot has been done today. Changed brake pads, flushed brake system, lots of gel in the system. Adjusted chain slack. Did a valve adjustment. But here is where the strangeness begins. After the adjustment I fire the bike up, and it's louder then it normally was. Now it runs a whole lot...

Carb dipped and cleaned. Every seal and o-ring has been replaced. I've benched synced and manometer synced the carbs. Acceleration is great. And speeds above 25ish are fine. Seems like if I am slower then20 or low rpm the engine is boggy and jerky. Have to feather the throttle then it gets a...

81 xs400 Special II my orginal tach had the hi beam indicator on it. But broken. I picked up a different tach that has the high beam and neutral indicator light. I screwed the cable in, harness is different but doesn't concern me at this point. The rpm scale is different. Will these 2 tachs...

After making the mistake of tearing the carbs apart. Then having to track down all the seals and rings. I got the bike running. Completely carb dipped and cleaned out. Bench synced. Still need to do the dynamic sync and possibly another adjustment to the air fuel mix. I have then turned out 2...

So I need to replace all the orings in the carb and need to find a good source. I think I may have found one. I have a 81 xs400 Special II BS34 carbs. I came across: http://www.cycleorings.com/#BS_Series_O-ring_Kit When I emailed him, he couldn't confirm that the rings would find...

Is there a full carb kit any where for the BS34 carbs? Sitting on a 81 xs400s? I had to pull my carbs off, and looks like a 30 year carbs inside. I looked at mikesxs and seen parts but nothing in a full style kit. Unless I missed it. Also any good chem to clean and soak the carbs with?

Well many people say to buy local. I went to local cycle shop, ordered some bearings and a set of tires. He told me they'll be in Tuesday. Week went buy and no phone call. So I called up and he said that he forgot to place the order. Second time it's happened. I told him to forget it and bought...

Probably opening a can of nasty worms here. But, whats everyone like for plugs? THis would be for my 81 xs400. Typically I have always stayed with the type of plug the manufacturer recommended or style of plug from around that year(s) of engine. But this was with cars and trucks. I know...

shootin the breeze with my brother and he asked me if I ever got the exhaust fix on my xs. I told him no. But I just started to fix up the bike. BTW, new wheel bearings and tires ordered for the bike. But he said he just put new mufflers on his wifes sportster. Said we could put those on...

Did some reading and there have been many discussions saying you can't turn our rotors for the xs400. Well I'm here to say you can. How do I know? I turned them myself. Here's a small photo tutorial. Get yourself a brake lathe. Match up your cone, Then match your cup...

Anyone from the central With area? Just curious. Stevens Point here. Posted via Mobile

Is there a mobile app? Not the theme for the forum, but an actual app for the forum. If not, then that would be my suggestion for the forums. :thumbsup: Posted via Mobile

I'm starting my budget rebuild of this bike. I got the front wheel off and going to buy the tires. Here the tires I picked. Kenda K657 Challenger Rear 120/90-16 Kenda K657 Challenger Front 100/90-18 Any thoughts on the tires? Good all around cheap tire?

getting ready to start my restore,, Should have done it over winter but hey... Not sure if it will matter when I start ordering parts. But here's the engine/frame numbers. 4R4-007508 (Engine/Frame) JYA4R400 4 BA007508 12/80 Title says 1981. NOt sure if those 2 years will matter in...

81 XS400 Special. Picked up this bike and I'm working out some issues. Cleaned up the tank and kept taking it for short rides. Seems to run good, Took it for a 10 mile ride and it gets a bit worse. I think I narrowed it down to the petcock. Seems If I turn it to the Res it will run fine...