Seeing that this Greenfield has a 8.5 Hp motor John ,I had thought it looked a bigger motor ,I'd say now this was originally a 8 Hp Briggs motor .
The front of the bonnet being lower shows it being the 8 Hp model and not the 10 / 11 HP model
There is a manual here, but you may need to copy and paste the following into address bar https://greenfield.com.au/wp-content/uploads/2023/11/Tractor-Complete.pdf#:~:text=MODEL%20DESCRIPTION%208%20VR%20or%208%20VE,recoil%20start.%20Page%202.%20GREENFIELD%20TRACTOR%20MOWER.
Ah, I see Hudson has a classic hardware limitation (lack of thumbs). My database suggests upgrading his treats to see if it fixes the tool-delivery latency .