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1971 Yamaha XS1B (XS650)

  • Thread starter Thread starter russr33
  • Start date Start date
My first street bike was a '72, with the disc brake. It would occasionally go into huge speed wobbles if you went fast enough. Very scary.
 
RUSS...If the carbs are like mine on the TX750, the jets are in the bowl. If the bowl is full of scale, throw them in the berrymans for at least 2 days. It took SIX (6) cycles in a sonic cleaner JUST to get them out on the TX. Also be sure you have the cover gaskets IN HAND before you touch a single bolt.

The sync ports are a 5MM thread so you may have to borrow some or get them from Z1.

I would do just what I am doing to the TX..clean it up and repaint what needs it, polish the covers, service the forks etc etc and youll have agreat bike and a REALLY BIG eturn for a full stock runner. Theres a cult following form those that is friggin ridiculous!!!!!! If we may ask...how much coin????
 
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Same exact carbs as the TX..soak the bowls to get the jets out. The main is under the biog nut at the bottom.

To do a real clsoe hand sync what youll do is this:::

Observe that there are 2 idle screws you loosen the jam nuts at then grip to adjust them. Touch the one on the left with your finger and WATCH the one on the right. Turn the grip and youll be able to see the one and feel the other as you start to turn the grip. If one moves before the other, you adjust that cables turn buckle till youve got them both starting to move in SYNC with each other.

Then you will be able to adjust the idles with the screws. The proceedure as called for in then TX maual is as follows..

Turn the idle knobs in till the engine is at 2500 RPMS and sounds smooth. Unplug the left plug and turn the idle knob down on the right carb till the bike stalls. Pluig in the left plug and restart the bike. Unplug them right plug and turn the left idle down till the bike stalls.

this is a close factory set and guages will tell the rest of then story.
 
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tkent02 said:
My first street bike was a '72, with the disc brake. It would occasionally go into huge speed wobbles if you went fast enough. Very scary.
Click to expand...
First bike I ever took over one-hundred miles an hour.
I didn't do that again on that bike.
I learned a lot about working on bikes with these models. I swapped out motors, heads and everything you could think of.
Easy peasy.
 
chef1366 said:
First bike I ever took over one-hundred miles an hour.
I didn't do that again on that bike.
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Because I didn't own my '76 XS650 very long I never did top it out, maybe took it to 90 or so, so I find it interesting about the high speed wobbles and such. Perhaps that's why I'm still here.
 
She lives! Not a hint of smoke either which was nice. Guy riding is my mechanic buddy who owns a shop. He was making sure I didn't screw up too bad when tearing down/cleaning carbs. :o Will still need choke cable, a proper rebuild of carbs, petcock rebuild, electrical work etc. But engine seems to be in decent nick.

http://www.youtube.com/watch?v=6Qn5DthXfBg
 
Have you done the valves and checked the timing yet? Points are under the covers on the sides of the jugs..but i guess you already knew that.


She sounds strong.
 
Nice! Makes me wish I'd moved heaven and earth in 1978 to keep my own '74. I recall at the time a mechanic telling me those engines were well-built. The sound out of those pipes was classic 360 degree British twin.
 
chuck hahn said:
Have you done the valves and checked the timing yet? Points are under the covers on the sides of the jugs..but i guess you already knew that.


She sounds strong.
Click to expand...

No Chuck the plan was just to show that she ran. Will go on ebay this weekend. Will make a really nice survivor or outstanding restoration platform for someone.

I need $$$ for powdercoating/anodizing/fab work, etc, etc, etc for the Kat resto-mod. . Should be done with mock up this week.
 
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Now that is how all E-Bay ads should look.
Good luck with the sale, Russ.
Inquiring minds need to know...got your eye on another project yet?
 
Thank you Steve. I try to make my ads as comprehensive as possible. Now if I can only figure out how to embed a video in the damn ad I would be golden.

Projects? Good lord I have enough. As far a flip bikes I have the XS1B, a '99 ZRX that I picked up for cheap money and today I picked up a '69 T250 for $100. It's just a parts bike though. Forks and rims rusted to hell.

As far as my bikes I bought Joe out of the GS750"S" we had together. Really want to get it back to the showroom condition it was in it's former life. The '78 1K needs to have a frame off at some point and the Kat project should be a runner by end of week. Then it has to be torn down for paint, powdercoat, plating, etc. And the 174,000 mile '79 1000 will be back on the road next week hopefully. Going to replace clutch, new reg/rect, fork seals and she will be done.

So I need another project like I need a hole in my head. Which probably means I will have one by the end of the week. :)
 
russr33 said:
Thank you Steve. I try to make my ads as comprehensive as possible. Now if I can only figure out how to embed a video in the damn ad I would be golden.

Projects? Good lord I have enough. As far a flip bikes I have the XS1B, a '99 ZRX that I picked up for cheap money and today I picked up a '69 T250 for $100. It's just a parts bike though. Forks and rims rusted to hell.

As far as my bikes I bought Joe out of the GS750"S" we had together. Really want to get it back to the showroom condition it was in it's former life. The '78 1K needs to have a frame off at some point and the Kat project should be a runner by end of week. Then it has to be torn down for paint, powdercoat, plating, etc. And the 174,000 mile '79 1000 will be back on the road next week hopefully. Going to replace clutch, new reg/rect, fork seals and she will be done.

So I need another project like I need a hole in my head. Which probably means I will have one by the end of the week. :)
Click to expand...

You got the sickness bad! :p
 
jwhelan65 said:
You got the sickness bad! :p
Click to expand...

It is a sickness you know well. You're just on temporary hiatus anyway until the new house and shop are done deals. I seem to remember a trip to your casa when there must have been 10 bikes in the garage/driveway.......:rolleyes:
 
russr33 said:
It is a sickness you know well. You're just on temporary hiatus anyway until the new house and shop are done deals. I seem to remember a trip to your casa when there must have been 10 bikes in the garage/driveway.......:rolleyes:
Click to expand...

Ya got me there...:o
 
Those bikes are cool, and they are siginificant, but I wouldn't want to ride one very far or very much. You did well to find it, make it work more or less, and flip it. It will make a nice addition to someone's collection. they were not fast, not comfortable, and didn't handle. They were super durable, if by buddy's was a representative example back in the 70's.
 
2 1/2 hours left. Made a slight jump today to $2700. Hopefully will get a late push, although I wouldn't be surprised to see it stay at that number. Never can tell really; hopefully a couple of folks feel they have to have it. :)
 
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