fails to run?

Stihl 021 chainsaw,
when starting it will rev and then just die-out, Try again with choke, ditto. try again with no choke (nothing)
have checked spark and fresh mix but to no avail.
any help would be appreciated.
cv, January 2017


done
yes I done few searches but did not get what you got.
Thank you.

cv, January 2017
http://forums2.gardenweb.com/discussions/1629422/stihl-chainsaw-starts-but-wont-run

http://tekindoor.com/miscellaneous/stihl-chainsaw-troubleshooting/

http://homeguides.sfgate.com/stihl-saw-keeps-stalling-96855.html

http://www.diynot.com/diy/threads/stihl-021-chainsaw-dies-at-high-revs.211929/

You DID try a Google search or two for yourself, didn't you?

Got all those well within 60 seconds

Anon, January 2017