I think you are overthinking things.

Condition of head sounds pretty typical….some black crunchy oily stuff is what I find in mine. 

how does the cylinder look when piston is all the way down?

a picture would be great 

>>>>You're right, Tinkicker; I shouldn't ask questions in a forum. Everyone here is an expert and there are absolutely no newbies to these bikes and I should let others browbeat me into staying in my lane.<<<

Whoa.

Browbeat - verb - intimidate (someone), typically into doing something, with stern or abusive words.

Number one. Nobody is browbeating anybody. Except you. 

I am sorry to have caused you offence.  It was not intentional.
It was a tongue in cheek answer and not one I expected any offence to be taken from.  It was certainly not stern or abusive.  Your response on the other hand...

Number two. I said you are overthinking it because you are. If it runs fine and the plug is the right colour, and you already admitted you have access to the colour charts to check, then it will probably be fine.  
You run it to test it and make use of whatever non invasive monitoring system you have at your disposal. In your case, a plug spanner,  your ears, your eyes, your backside, a revcounter and a speedo
If it does not break down you are golden.  If it dies you have your answer.  This is industry standard procedure.

Number three. How can anyone possibly answer your question when you give absolutely no information.

We do not know how many miles it has done.
We do not know if it was ridden flat out.
We do not know if it was idling for three hours.
We do not know if you are running premix or pump.
We do not know if you are running old sump oil in the gas or fully synthetic in the tank or visa versa.
We do not know because it is not common to take an engine apart just "to look" unless there is a specific reason to do so.
We do not know the circumstances that prompted you to take the engine apart in the first place.

There are a lot of do not knows there.  How can you expect any response other than a tongue in cheek one?

I could ask a similar question of the forum to yours.

Is the paint on my living room wall waterproof? Here is a pic.

Once again.  I have no intention of browbeating you.  I am merely pointing out the errors that led to this sorry episode.
Your abusive, passive aggressive response certainly intimidated me into spending quite a period of my life defending myself and engaging in an action I was not expecting to have to take.

​​

Have you cleaned the piston & not the head.
Looking at the head it just looks like its not being ridden hard enough but could be an indication of a restricted exhaust.
Give us a bit of history of it please. What caused you to lift the head.
I wouldn't go reading the plug color until you're sure the motor is good so far as rings, exhaust, & oil pump setting goes, otherwise your plug will give a false indication.
Not than i'm an expert as i've never done a plug chop for color/ mixture reading.
Also crank seals come into it especialy right side from an oil point of view, but only if its using trans oil.
On the face of it she looks like it needs a good run.
But prsonaly i'd lift the cylinder now ya that close. What was the reason you pulled the head in the first place.
Looking at the gasket i wonder how tight the head bolts were.

I am not an expert, but if the Bike runs then I see no issue to worry about
per Mr. RT you might want to check exhaust port and if it doesn't rev up burn out the exhaust pipe, but looks like a nicely worn in cylinder to me.  Looks like a dykes ring on top judging by the piston top

Trailboss wrote: .............Can you guys list in here what different conditions of the cylinder heads mean? How to read what's going on by the shape a cylinder head is in?...............

The answer to both questions is no...  especially under the circumstances and information you gave...  Nothing was mentioned about the engine not starting, running poorly, mileage, making noise, etc. in your original post.  Since then, you've confirmed the head was only removed to check the timing. (Read the owner's manual, you're probably due for a decarbonization).  Under these circumstances, everything I wrote so far could be condensed down to a simple "you're overthinking things".   Or as MSavitt said a little differently "if the Bike runs then I see no issue to worry about".

Could a more detailed response by Tinkicker been given?  Certainly.  But as one who often does just that, the truth is many people get very offended when I try to explain "basics" to them.  And many seem to get offended if the answer is not what they want to hear.  And then we have the complication of the "Internet experts" who post complete BS at times to sound smart or something?  (Not so much on this forum..but I'm sure you can find an "expert" out there that will claim they can read cylinder head carbon without any other information like a fortune teller reads tea leaves.)

Bottom line, Trailboss, is your "attack" on Tinkicker was not acceptable  He simply expressed his opinion.  Please edit your response or delete it. 


 











 

Dykes for sure.

Yamaha used dykes?

cliff

Come back OP please & let's start again. Fresh start!!.

Indeed. Give us a bit more info so we can try help you.

Just like a medic diagnosing a patient, we need every bit of info you can think of.

Gone, like so much info.