The rotor (flywheel with magnets) spins on the shaft of the STIHL 180 chainsaw, creates the magnetic field for the ignition coil and cools the cylinder with its fins. Manufacturer: EMAS. Country of origin: Taiwan.
Replace it if there are cracks, the magnets have lost strength, or the key or fins are damaged. Signs: weak spark, unstable ignition, runout. The fit and the key must match the crankshaft of your saw.
