Restricted gsr 750

Restricted gsr 750

I’m thinking of buying a gsr 750, found out today that it’s restricted. Not sure if it’s factory restricted or otherwise. The seller has agreed to return the bike to full power. My question relates to whether or not this invalidates any manafacturesrs warantee if this work is not carried out by registered dealer. Bike has one year of manafacturesrs warantee remaining.
Source: Restricted gsr 750