tape deck/wrong speed

[kingrat2010]

hi everbody
can somebody help me
my tapedecks from both ics str 5091 plays at a wrong speed, one is much to fast, one plays to slow
i opened the back from the box and there is a little screw at the tapedeck with two letters f and s, i think it stands for fast and slow
can it be that simple ?
or probably its something with the belts?
help needed thanx

 

[Fatdog]

It might be that simple. However, tight belts will cause the motor to spin slowly. Then when those tight belts begin to loosen, the motor will spin closer to its normal speed.

I would put new belts (correct size) on both decks and then do any needed adjustments.

 

[kingrat2010]

thanx a lot
but i need some more information
how can i measure the belt ? cut it or expand it ? take the size ? take the half size ?
sorry im confused
the question is how can i change the belt without making damage