The older type yaw damper on the 707, F4F, was of the parallel variety, and indeed OFF was the requirement.
This presented the pilot with some handling issues, as the vertical fin on these older models was shorter than later models, so in gusty winds, it was a dutch rollin' bronco....
Later 'fixes' for this was the 39 inch ventral fin fitted, and this helped...some.
The ultimate was on the -320B advanced models, taller vertical fin, no ventral fin, and a much better designed series type full time yaw damper, as on modern types, now.
The older 707's nearly did not make it onto the British register, as David P. Davies insisted they be improved in the handling department...especially the rudder power.
Ha! Even the 'improvements' implemented by Boeing were a tad on the thin side, from my experience in these old aeroplanes...long ago.