Safety first: Turn off power before removing knobs or control panel.

Remove knobs: Pull the knobs straight off the shafts. Clean the shafts and knob bores with a mild cleaner and dry thoroughly.
Inspect selector switch: Check for signs of melting or misalignment. If the switch body is deformed, replace it.
Check panel alignment: Ensure the control panel is not bent or pressing against the knobs. Adjust mounting screws if necessary.
Replace damaged knobs: Install new Sauter-compatible knobs if the originals are cracked or warped.

Control knobs are very stiff or difficult to turn

Possible Causes