Mechanical knob controls are stiff, hard to turn, or do not click into positions.

Safety: Turn off power before removing knobs or front panels.

• Remove knobs: Pull the knobs straight off the shafts. Clean the knob bores and panel area of grease and debris.
• Lubrication: Do not use general-purpose oil. If the manufacturer allows, apply a small amount of high-temperature-safe contact lubricant to the shaft (avoid contacts).
• Inspect selector switch: If the switch does not click or feels loose, replace the function selector switch.
• Replace thermostat: If the temperature knob shaft is stiff or wobbly, replace the oven thermostat assembly.