Re. earlier message about power equipment: nothing found

I have a Stihl HS85 hedgecutter which starts OK and runs strongly, it does
the work but tends to stall if left to idle. Then it won't restart. I've had
the plug out and it does seem a bit oily (after failing to restart) but not
at all carbonised. As a visit to service centre is a 60 mile round trip
twice I'd rather fix it myself if possible.
Help or a pointer to a website with info about power equipment would be
useful.
--
Any help TIA
Please reply to Newsgroup
scrambled address