Customer Questions and Answers for Knob Barrel (Control Knob Insert) by Whirlpool

This control knob barrel is the inner sleeve that connects the knob to the control shaft. Replacing a worn or cracked barrel restores a snug fit so the knob turns the switch or valve reliably without slipping.

• Couples the knob to a D-shaped or splined control shaft
• Restores positive engagement for smooth, accurate adjustments
• Replaces a stripped, cracked, or missing inner sleeve
• Common symptoms: loose or wobbly knob, knob spins without changing settings, or falls off

• Disconnect power; for gas appliances, shut off gas supply
• Pull the knob straight off; remove the damaged barrel from the knob
• Align the new barrel with the shaft shape and press it fully into the knob
• Push the knob back onto the shaft until seated; verify proper operation