Sorry, there is no mention of the rates or distances in the maintenance manual for manual override.
A separate post for this might be a good idea considering the ambiguities found in the manuals for this subject: e.g. looking at an old AOM for one particular airline, I see the following statement ...
"Thrust levers can be manually positioned without disconnecting the autothrottle.
After manual positioning and release, the autothrottle repositions thrust levers to
comply with the active mode. The autothrottle system does not reposition thrust
levers while in HOLD mode."
If moving the levers produces HOLD mode, then how can the levers reposition?