Chainsaw crank seal removal. Efco 156 or Oleo Mac 956. 

For those who try this method you can grease the bit to prevent metal falling into the case.

What do you do on the chainsaws that have seals that aren't that wide? Some of them on the clutch side have less area to put the holes in..

Well, I've done it a couple of times now and it's been fine. I do think I noted the 'BE VERY CAREFUL' caveat at least a few times during the video. Also, I don't really see swarf being a huge factor if you use a hand drill and GO CAREFULLY as I suggest. Obviously in an ideal world you'd use a puller.

LOL 25 seconds of information dragged out over 5 minutes