I forgot to mention that I also checked with a spring scale that after adjusting the adjuster nut to 25 Nm the force needed to turn the front fork lies in the range that Honda specifies for road bikes.

I found a web site which has basic maintenance info for loads of Honda bikes; for road going bikes the force needed to turn the fork should lie between 1...1.8 kg (depending on model), with smaller bikes being at the lower end and bigger bikes at the upper.
I attached my fish scale to one of the fork tubes between upper and lower clamps and pulled on the scale. The reading was a consistent 1100 g. Test passed.