Hi deejay, thanks for info mate, I will check full serial tomorrow but I do remember it starts with 71 and to my knowledge that means 1971 was the year it was built.
To answer your questions I have know how to use this machine, as I work as an outdoor power equipment apprentice.
I have just finished my 1st year at NQ Power Equipment in Innisfail Qld. Anyway we were cleaning out the shed and they put it out for scrap, and I saw it; I couldn't let it go, as it is in such good condition and looks still all original.... so my plan is to fully restore it and just keep it. I guess I do like the old stuff so yeah, might start collecting... lol