To be honest with you mate, Joe's right, I mean you could give it a go, and see what happens, but if you so manage to get it to actually start, I'd put my money on 'Rough as guts'.
Are you in NSW or ACT, I might be able to point you in the direction of a good place to grab a cheap engine for it ($10-$20) or if your close enough, I should be able to dig one up you can have.