Using the diagram, locate the idler wheel cam. The manual details how to adjust the eccentric pin to ensure the idler meets the motor pulley and the inner platter rim perfectly flush—not vertically misaligned.
The TD124 came in 50Hz (European) and 60Hz (US) versions. The manual shows how to re-wire the motor for different voltages (110/125/220/240v). If you import a deck from Germany to the USA, you must follow this diagram or you will burn the motor coils. thorens td124 service manual
According to the manual, you must disconnect the motor springs (Part #124) using two pairs of pliers. Do not stretch them. Set the motor on a clean cloth. Using the diagram, locate the idler wheel cam