What is the magnetic float on a magna-stick used for?

• A. To indicate fuel level by aligning with magnet.
• B. To measure oil level.
• C. To calibrate fuel pump.
• D. To ignite fuel mixture.

Answer: (A)

The magnetic float on a magna-stick is used to show fuel level. Inside the tank, a buoyant float contains magnets. As the fuel rises or falls, the float moves up or down a calibrated stem. The magnetic field from the float couples with a magnetically driven indicator outside the tank, pulling a pointer or sliding scale along to display the current fuel quantity. This magnetic coupling allows reading the level without any physical linkage crossing the tank wall.

This isn’t about measuring oil, calibrating a pump, or igniting fuel—it’s all about providing a reliable visual indication of how much fuel is in the tank.