More than likely NOT a simple adjustment.  It's a very   
   common symptom caused by a gummed up clutch, (behind the   
   vertical playing turntable).  You may have to find   
   experienced help, (service call), or another collector   
   willing to offer some help with a cleanup-relube.   
      
   You will find good information on youtube on how to   
   lube the mech, and also other Seeburg Jukeboxes displaying   
   this same exact symptom, with various collectors showing   
   where to lube the clutch assembly.   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)