I don't think it's normal.

I would confirm this from another source before tinkering, but this is 
my understanding:


The rubber skirt around the knob will  come off if you get under it with 
something thin and pry it.

  Under the rubber, there is a hole in the knob that  will take a metric 
hex key (Allen wrench).

Maybe this has gotten loose.

73, Steve KW3A


On 11/21/2015 2:28 PM, howard kaufman wrote:
> The tuning knob on my ts-590 has about a 16th of an inch wobble on the
> shaft.  This effects the smoothness of the tuning.
>
> I bought the radio used, so I am wondering if this is normal, and if not,
> how to fix it?
>
>
>
>
>
> Howard Kaufman MSW LCSW
>
>
>