Hello RSB,
A big warm welcome to the ODK Forums.
If your passion is for Scotty's then you've most certainly come to the right place.
Your story is not an uncommon one, many Scotty's are passed down from Grandparents and Parents to siblings, thus this is a true testament to the Model 45, Supercut and Model 33 that have survived all these years while most other mowers have long ago gone to landfill or scrap heaven to be reincarnated into a flimsy Talon etc.
I'm sure you will find all the info you need here and if you don't then all you need to do is ask.
Cheers,
BB.