i have a gf 9191 it runs a bit slow i changed the belts but theres no speeed ajust on the motor is there one anywere if so do you have a pic of were , the motor gets really hot to thanks paul

Look at this thread ...

http://stereo2go.com/eve/forums/a/tpc/f/8596027254/m/4621009535

Some motors don't have speed ajust, more if were made before 1979.

Exception were manufacturers that used motors (without speed control) and built some kind of speed control on the mainboard, like grundig or philips in early 70's.

But most manufacturers used motors with mechanical speed control until the end of 70's,. Then the motors became electronic with the speed control built inside.

The mecanical ones can't be adjusted without dismatle.