Disconnect the connector to the motor and apply 12v to it. Orientation wont matter as you will know whether its winding in so reverse the polarity. Ive done this a few times if i have had cars delivered with no keys and the handbrake is on
If you're really interested in going for it then make some enquiries as to whether the turbo oil screens have been done. Its a common fault and can lead to expensive replacement turbos. The oil screen is peanuts in cost but its the labour cost that makes it an expensive job
I think sometimes all it takes is the small claims court papers to land on their doorstep to finalise things. They probably think you wont go that far and you are full of hot air.
Courts usually dont look favourably on large companies screwing over the average man, but it does depend on what...
Ive got the same printer: 283fdw and works great. Toners are the same ones they shipped with and apart from it dropping offline from its wireless occasionally its works. Got mine from JL when they had the £100 cash back