Suzuki DF70 2003 4cm pin mystery.
 

Hi..Im newbie so please bare with me.
Im a motor mechanic for over 40 years.
Anyway, i was taking cylinder head of my DF70 when the part i am going to show you fell on my foot.. Funny I know, BUT, I cant find out where it goes, and neither can my local Suzuki dealer.
Hope you guys can help.
Darn it. I just found i cannot post a picture of it i took I need a URL or something which i don't have.
Its just a round pin that is 4 cm long.
Any help would be greatly appreciated.