OK ... I was thinking while on my bike ride.... answer these questions.... YES or NO
When you put the new battery in was it charged and did it turn the engine over?
If you have the fuel line disconnected, if you open the fuel switch, does fuel come out?

 

 

So with the new battery, the engine was not turning over (piston going up and down), but you could hear other parts turning?

 

 

vid unavailable....

 

Now it should be available !

 

I think the starter & engine is turning. I think you have a carb/fuel issue.
How did you get the head off without disconnecting the fuel?

 

sounds like 2 problems there

1. your starter has ben damaged by overuse (overheated from running to long)

2. sounds like low to no compression

 

That's what I'm thinking.... I'm gonna open the left side to check that the starter is engaging and that is working properly...

 

Do you know what should I be looking for? ... by the way thank you for your help PeaBrain/Durielk you guys rock!!!!