The Spooky Tooth site has some reasonably good instructions as well. Beleive me if you had received the "Chinese-English" instructions that these engines normally come with you wouldn't have been any better off than you are now!
Example: "At the ends of the handle of the clutch, please ensure keep a certain free space, generally 2-3 mm."
It doesn't get any better either.
Good luck and do not expect for a moment that your first install will go smoothly! Just keep trying and asking questions until it works! That's why we hang out here.
If it can't be broken I'll find a way!
I'm not lost, I'm exploring!