Removing key off crankshaft?

[Savage99]

I have a 1981 Honda ATC 200 that I am attampting to swap bottom ens off of another motor. The key on the left side of the crankshaft is worn on my "new" bottom end. How would I go about getting that thing off the crankshaft??? I tried to tap it off but no luck. Any ideas? Thanks.

Mark.

[83185s]

id try a small solid screwdriver and a hammer..if it doesnt work get a propane torch and heat it up a bit then hammer again..it seemed to work for mine