The motor is a powermore by Zongshen, the same people who make the predator power motors (note predator australia motors not USA harbor freight Predators). I would rate them below loncin but above sumec and relatively on par with rato and lifan.

You would have some home of getting parts through rover as they have used them.

They are more common on mtd's american products https://www.rona.ca/en/product/remi...r-140-cc-20-in-grey-11a-02sb583-02225231

Aldi also use it on their more recent mowers https://au-catalogues.com/n/aldi-specials/catalogue-69226-13

I was unlucky enough to be given the previous model that had a 99cc t100 motor of unknown manufacturer but the same as used on early aldi mowers and a few others. Put it on a 18in rover deck with rover blades - was comically easy to bog down but strangely hard to outright stall. 3 uses later the pull start completely disintegrated and I couldn't be stuffed finding a cheap replacement so all i have left is the carby and a few other bits.