im installing a top end i need to how much do i tork the head bolts down to. and how do i find TDC i really need your help

 

on my 250ex theres a little round bolt thing on the case and it has an alean wrench bolt... if u can find something like that then ig u look in there u will see diferent marks and one should say TDC OR maybe just T....crank it slow till its linned up..(thats what i did)

 

on the left side of the engine there is two allen plugs, undo them and rotate the bottom til the top has a littl e t that lines up with the nothch behind the gear