Control knobs are hard to turn or feel loose and wobbly.

Safety First: Turn off gas and power before working on gas valves or electrical switches.

Step-by-step:

• Remove knobs: Pull the knobs straight off the shafts. Clean grease and debris from the knob and shaft.
• Inspect knobs: Replace any cracked or stripped control knobs.
• Valve/switch condition: If knobs are good but still hard to turn, the gas valve or infinite switch may be worn. Replace the affected surface burner valve or infinite switch.