I have a craven speed puller have used it a few times and it works a treat.
If you want to borrow it you are more than welcome PM me, remember you brake you replace.
I have attached a link for the puller. I got mine from lohan, also a link for alta how to change the pulley.
My advice also is buy a tentioner stop while your there fit it will save you a lot of hard earned if the belt goes.