Chainsaw Repair

Well they are blind holes. I can still see the end of the hole. Don't know if they they got in there to far with the drill and tap or what. It is a very slow leak. For the decomp the one on an 084 is coarse thread. Not like the ones for 260-660. I usually replace all the above mentioned stuff when I would do a top end replacement. But the guy I am fixing it for does not like to spend any money.