49. Solder the wires onto 

 the solder points of 

 the potentiometer 

 (model SF40). Make 

 sure the wires are 

 long enough to get 

 the potentiometer in 

 and out without de- 

 soldering. 



50. Bring the potentiometer into 

 middle position; that means 

 turning the shaft until you 

 measure 5-kn resistance be- 

 tween 1 and 2 or 2 and 3 on 

 the potentiometer. 



51. Assemble the potentiometer 

 without turning the shaft. Be 

 sure it is seated correctly. 



68 



