Magneto-electrical a. : Pertaining to, or characterized by, electricity by the action of magnets; as, magneto-electric induction.

Example:
How do I remove that magneto cover (I think it's a flywheel) on my ATV?

Taxonomy
magneto, magneto ignition system, voltage, coil, primary coil, spark plug, flame fronts, ignition system, tension, high voltage, secondary winding, cylinder, combustion chamber, electrical, free encyclopedia, electrical supply, aviation engines, arc.

Defination from the web:
magneto is an electrical generator that uses permanent magnets to produce pulses of high voltage alternating current. ... used in aviation engines even though an electrical supply is usually available. This is because a magneto ignition system is more reliable than a battery ...