Clean the lint screen
Clean the lint screen as directed by the manufacturer and avoid overloading the drum. Check that the chosen cycle suits the fabric and load.
Watch for airflow issues
An unusually hot appliance or a long drying cycle may indicate restricted airflow. Arrange inspection of the vent and appliance rather than continuing to run repeated cycles.
Put safety first
Stop using the dryer if you notice a burning smell. If you smell gas, leave the area and contact your gas provider or emergency services from a safe location. Do not attempt gas or electrical repairs yourself.