Parts availability is pretty low in Australia. Best way of dealing with spare parts is to either buy a second machine as a spare parts unit or, simply buy the parts from USA and get them shipped. Be prepared to pay for the shipping though, as it can be quite expensive depending on what you need.
That being said, they make for a fun project. I have one in the works currently. Where in Australia are you located?
Forget the whales.. Save the 2-Stroke!
85 ATC110 - The Greatest ATC of all time - (My First - new in 85)
83 FL250 - Odyssey w/420cc - SOLD
82 185s -10.25:1 piston, Full 200x upper, Goki Electric start - SOLD
84 200x - Auto-X - Weisco Hi-comp, Cam'd, Bassani'd, Westcoast swinger, -SOLD
82 200E Big Red -SOLD
85 ATC250ES Big Red - Snow Plow !