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Hi out there, a couple weeks ago I took my bike for a ride. Pulling onto a hiway, accelerating but not hard and like a switch was flipped the bike starts running bad, but still running. Kept going thinking out of gas, nope, so after a short while I realize it's running on one cylinder. Having no...

how fun is that? Good thing the sand is soft.

https://www.ebay.com/itm/1971-Yamaha-XS1B/263583904409?hash=item3d5ed33299:g:8bgAAOSw629awu0q&vxp=mtr

Hi out there. Anybody ever used a "Syncrometer" (carburetor airflow meter) to adjust their carbs on an XS? A friend of mine loaned me this device, claimed it works well. The idea is you plug this into the inlet side of a carb, then adjust the mixing screw for the specified airflow, then move it...

Hi out there. The side cover trim for my XS1b is pretty lame, and I was trying to find new. found this on CL and it sounds like whom ever has made a bunch of them. seem a bit pricey but maybe that's just me being cheap. Has anyone purchased from this seller, how's the quality???? Maybe someone...

Hi out there, recently rebuilt my carbs, found that the shafts that hold the floats in place were severely worn on the ends. Purchase a length of 2.5mm brass rod to make new ones, that would be a 3 foot length. I now have more 2.5mm rod than I could use in a lifetime. If anyone needs some just...

Hi out there. I have an XS1B that I have now been working on for the last few months, bringer her back to life after 30+ years of sitting around. Started her up a couple weeks ago (2 kicks :), it was awesome) ran for about 5 minutes then died, found that one of the stock coils died (thanks...

Hi out there. So was thinking about putting progressive fork springs in my '71 XS1B, cannot find them available and I have looked a lot. The stock springs are 23mm diameter and 400mm long, there is also a spacer that is 46mm long. Conceivably I can fit a spring that is 445-450mm in length...

Hi out there. I'm looking for a standard seat that fits an XS1b. I have a seat that I think is the "large seat" that was available for the XS1's, it is shown in the parts diagram upper left corner. I would prefer to have the standard seat. Anyone have a seat for sale, or would maybe like to...

Hi out there, anyone know where I can find/buy one of these? Front battery box bracket for a 1971 XS1b.

just picked up a 71 XS1b. Interesting thing is that it is red, not a repaint, the painted parts look as if they have been on the bike a long time. Does anyone have info on red as an available color for that vintage. I am familiar with the orange and green. The bike is kick start and has front...