Buy a puller. The holes are threaded and you can use the bolts off one of your Victa 18 height adjusters. The puller doesn't cost much
http://www.ebay.com.au/itm/13PC-HARMONIC-BALANCER-KIT-GEAR-PULLEY-PULLER-STEERING-WHEEL-CRANKSHAFT-TOOLS-/121819710306?hash=item1c5d054362:g:tyQAAOSwlV9WTshM
Doing it that way will break something for sure, you will find it useful for a lot of jobs Sean.