The cable rewind is no problem, we have those.
If the motor sounds OK, I wouldn't be looking at doing anything with it. They're very well protected by the bag and filters.
If you're going to open the machine up anyway, there's no harm with checking the length of the carbons.
There is a Pet model 2014 2100w K1 parts list
>here<Not all of what we have is on the site and anything we don't have we can get within a few days. If you need something not on the site, shoot us an email
>here<