Control knobs are hard to turn or feel stuck on gas cooktop.

Safety first: Turn off all burners and ensure they are cool. Do not use excessive force on knobs.

• Remove knobs: Pull the knobs straight off the valve stems.
• Clean area: Wipe the panel and knob interiors with mild detergent to remove grease.
• Inspect knobs: Replace any knobs that are cracked or deformed.
• Lubricate valve (technician): A qualified technician can apply high-temperature gas valve lubricant to the stem if the valve is stiff. Do not use household oils.