Motorcycle Glossary

Stator

In Turkish: Statör (sargı)

In short

The stator is the set of fixed coil windings inside the flywheel that generate alternating current together with the flywheel magnets.

As the flywheel spins, its magnets induce current in the stator windings. That current charges the battery through the regulator rectifier and, on some models, also powers the ignition (AC CDI) and lights.

Symptoms of a problem

The battery does not charge
Darkened windings, a burnt smell, flaking varnish
A weaker spark on AC-CDI models

A stator is tested by measuring the resistance between its leads and its AC output with the engine running. A flywheel puller is needed to replace it.