Having been told by Eufy support that they do not stock spares, and that they won’t honour my warrantee as my fault happened 3 days past 12 months (!)… I thought I’d mention here that I have read elsewhere that Eufy 11 is the same device as the iLife A4.
If you search eBay for iLife A4, you will find spares for many of the internal motors and components. For example:
https://rover.ebay.com/rover/0/0/0?mpre=https%3A%2F%2Fwww.ebay.fr%2Fulk%2Fitm%2F123551839490
I haven’t tested this theory as I managed to get my central brush motor running again with some lubrication… However I thought this might help others.
If only Eufy would stock spares rather than treat this expensive item as a consumable that might become unusable only days outside of its 12 month warrantee. That, or at least direct people to spares from other companies.
Hope this is useful!