G'day Converse ,

I would say from that number the mower is a 1978 model ,usually I check the cylinder
head number as well.

Some info on the cylinder head number in the link below.

https://www.outdoorking-forum.com.au/forum/ubbthreads.php/topics/91462/2.html

Cheers
Max.


Attachments
Z-Year.jpg (47.14 KB, 141 downloads)
Corvette.jpg (95.59 KB, 140 downloads)
15th December 1978.jpg (148.95 KB, 140 downloads)
1978.jpg (61.46 KB, 139 downloads)