You can toggle between reserve and on fuel settings from the level on the left side of the motorcycle. It is located near the start of the seat and claims on, off and reserve marks. You can fill your tank full and ride till your reserve comes into action. That signifies that its again time for a refill. The engine powering the Gixxer SF is a 154.9 c, air cooled motor producing 14.6 HP and 14 Nm of torque.