I was cleaning my bike when I noticed a bolt behind the chrome cover on top of the motor.  just out of sight and stuck.  I had to loosen the cover so I could pull it out.  It was very dirty and looked like it had been there for a while. I haven't taken the tank off since 2006.  so it could have been there since then.  
it looks like this,  and it has black paint on it like the frame.

with the letter b  / or number 9 on it.

It was like this just a bitt longer in, so you could not see it.

anybody have an idea where it should be.  

Thanks Max for the reply.  I yanked the tank off and found there was one "hole" available.  

This one

The bolt was placed where the blue line is and you can see where the bolt has "polished" the surface while vibrating to the beat of the beast.
my question is, is this bolt very important?  or just one of many?

Most likely the hole is full of crap.  any ideas how to clean it so I won't press the dirt down when I put the bolt back. I'll try the vacum cleaner first and suck it "clean" .  does someone have on top of there mind the tourqe I should use when thigtening the bolt?

Not a cylinder head bolt, just a head cover bolt. I usually just tighten it a quick turn after snug and it holds pretty good.

Ok it's the decompresssion adjuster....  hope I haven't broke somthing..  now I have to figure out how to turn back time.

Sorry i modified it while you were writing...  

couse I found this thread...  and it look like it is to ajdust the decompression solonoid.

http://suzukisavage.com/cgi-bin/YaBB.pl?board=tech;action=display;num=1169356966


or am I totally off with that one.   does say that you have to have it on TDC before "adjusting"...  crap now I won't sleep well......

I modified my last post when I found some info..  but now I'm not sure....


after some thinking it's most likely just a cover bolt...  but when I try to pull it out there is some resistance like there is rubber or something....

Now I'll open up a beer and go down to the beach and listen to some music..  there are som jazz bands playing.        

OOOkay, you've found a vacant hole, repaired that, & one with a dutchman in it. Is there a leak? Anything that would force you to go in & fix it? If not, I would ride it, then this winter, go in.

I'd leave the broken bolt in place as I think it retains the shaft for the compression release via a groove in the shaft. I use long handled q-tips to soak the oil out of those holes before reinstalling the bolts. Get them by the pac of 100 at Radio Shack. Max

There are only 3 bolts if I remember corectly that have the sealing washers.  luckily those aren't them.  the rest are there to hold the head cover in place.  I don't one or 2 will make a difference.