It's a Greenfield - they're kinda an Australian icon at least where I live. Australian made & pretty bulletproof.

Good fun to mow with because they're light & zippy. Very clever design. Can easily mow through waste high grass - not bad for 11.5HP.

If I maintain it & don't hit too many rocks & branches, I should get 10 years from it. I destroyed the cast aluminium deck on the last one clearing scrubby land. Motor was still good & had twice as many hours on it than the new one with a dead motor. 🤷

Check the actual manual, so old school.

https://greenfield.com.au/wp-content/uploads/2023/11/Anniversary-12-32-Complete.pdf