IFB washing machines generally do not require an external stabilizer if the voltage supply in your area is stable and within the acceptable voltage range specified by the manufacturer. Most modern IFB washing machines come with an in-built voltage stabilizer that protects the appliance from voltage fluctuations.
However, if you live in an area with frequent voltage fluctuations or power surges, it is recommended to use a good quality voltage stabilizer. Voltage fluctuations can damage the electronic components of the washing machine over time and may void the warranty if the damage is attributed to unstable power supply.
To be sure about the specific requirements for your IFB washing machine model, it is essential to refer to the user manual or contact IFB customer support directly. They will be able to provide the most accurate and up-to-date information regarding the need for an external stabilizer for your particular model.