They've told me to tighten it all up and keep using it, and are sending me some new belts.
If it comes loose again it will be going back for a refund as not fit for purpose - the issue is logged with them and I’m following their instruction for now.
I’ve a tractor mounted flail mower hear 9ft cut and that has no key ways but does have proper keyless taper locking hubs so I’d say they have skimped on the hub to save a quid
