#1 problem. Post pictures of your bike. We like shiny pictures.
Ok then, I'm kind of new here myself, but let me brutally honest.
You haven't made it easy to help. You have barely asked any questions. When you did you got responses but did not follow up on them. I made some suggestions about the broken spark plug. So did another member. Did you try any of the suggestions?
If you keep asking the same question without trying any of the suggestions given, pretty quickly you'll find the suggestions stop coming.
You have also asked questions in multiple threads. This is frustrating for us. I'm already frustrated trying to piece together the information you've presented in multiple locations and trying to keep track of what suggestions have been offered.
In the "What did you do with your XS" thread arfstrom also made a few suggestions about how to get help. Did you read the help he tried to offer? There was something about putting your bike model in your forum signature?
You haven't done it yet.
Doing so would demonstrate that you are willing to follow advice and others may be more willing to help in the future.
Have you downloaded the service manual for your bike? There are factory service manuals available on this forum. A Haynes manual will also take you step-by-step through most procedures. I think Clymer also has manuals for our bikes but the Haynes are more common and seem to be the preferred option.
At least in this thread you have some specific questions. That's a good start, but rather than a giant block of text that nobody wants to read, maybe a list? With line breaks?
1.Two members responded to this when you asked in the "What did you do with your XS..." thread.
On october 16th, in a different thread, you said you would post a picture of the broken plug. That's a week ago.
We're still waiting.
In the mean-time:
In what way is it stuck? You said in a different thread again that you can turn it with a screwdriver. If you can turn it, why won't it come out?
Are the threads damaged? Have you chased the threads as suggested? Can the threads be chased with the plug still in there?
If the threads are damaged and you can't chase them with the broken plug in there, yes, you will have to take the head off.
It's not a simple procedure but it is one that a novice can do when following the instructions in the manuals.
Then you will have to repair the threads.
Make sure no debris gets left behind in the cylinders.
2.Why not? Spark plugs come with adapters threaded on but the stock caps on your bike probably don't work with the adapters. Just unscrew the adapters, then your stock plug caps should press on.
While we're here. Did you buy the spark plugs specified in the manual?
3.There is no question here. Do you need help with this? I've never done it myself but I expect it came with instructions. Let us know how it goes. I'd be curious to see it done.
4.There are no cables.
If it's a stock vacuum petcock there should be two hoses coming from it. One feeds fuel from the petcock to the carburetor and one connects to an available vacuum barb on one of the carburetor holders. If they are broken, replace them. Hot water might help by making the rubber more flexible.
Fuel line should be 1/4". Off the top of my head I believe the vacuum line is 5/32".
I was going to go on a further rant about how my time is money, my time is billed at $80 an hour, etc, etc, but it all comes down to this:
Help us help you.