How do remove these taps to replace a valve

[ac124]

Hi,
First time poster with what I'm sure is a simple problem.
Having trouble working out how these taps come off so I can replace the valve seal.
I have removed the small threaded brass spindle that seems to spread the split plastic collet when its in place. I assumed once this was out I would be able to pull the tap handle off the stem but there seems to be a lot of resistance still and I am worried about applying force or leverage until I know if this all that is required or if there is something else to remove/loosen first.
Dont know the brand of fitting but it is likely Australian and about 15 years old. Any help or suggestions are much appreciated.

cheers Greg

http://i30.photobucket.com/albums/c327/ac124/IMG_0056.jpg

[jimbo]

Probably you just need a handle puller now.

[hj]

Wrap them with tape, then use a large pair of pliers to pull them off. Or try prying them off using a screwdriver against the faucet body.

[Herk]

Looks to me like you need to squeeze the plastic tabs together while you gently pull. Forcing it will break the tabs.