Customer Questions and Answers for Rinse Aid Dispenser Knob (Dishwasher) by Whirlpool

This dishwasher rinse aid dispenser knob mounts on the inner-door dispenser and lets you set the rinse-aid dosage. Replace a cracked, stripped, or missing knob to restore easy adjustment and consistent rinse-aid use during the rinse/dry cycle.

• Adjusts the rinse-aid dispensing level on the dispenser
• Restores a secure, readable setting pointer for dosage control
• Common symptoms: knob broken or missing, won't stay on, can't turn or adjust settings, stripped splines
• Helps address inconsistent rinse-aid use when the setting can't be changed

• Disconnect power to the dishwasher before servicing
• Open the door; pull the old knob straight off (gently pry evenly if needed to avoid damage)
• Align the new knob with the flat/splines and press on; it turns through the full setting range
• On some models, accessing retainers may require removing inner-door screws—refer to your service information