Drill a hole approximately 8mm deep in the rim just below the tooth gap using a 6mm drill bit.
Insert a chisel into the gap between the teeth of the rim and hit it sharply to split the rim.
Heat the new rim evenly to a temperature of 200-230°C and press it onto the flywheel with a chamfer on the inner diameter. To control the temperature, it is recommended to use a thermochromic pencil.
Push the rim onto the flywheel by hitting the bronze drift.