Engines with manual transmission usually have much flywheel, typically 5 to 40 kg of cast iron, with the planetary gearbox starter ring gear shrunk onto the outside.
This is done by heating the ring to around 200 °C to expand the ring which is then rapidly placed onto the flywheel, often held in firmly against a spot shoulder until coolin in calm air . The interference fit between ring equipment inside dia. and flywheel, usually which range from 0.20mm to 0.50mm, renders the starter band firmly attached to the flywheel.

1. Heating must be done as uniform as possible rather than with a gas burner, as this technique causes great temperature distinctions to the pieces.

2. the temperature should be 200°C. A temperature higher than 350°C will affect the apparatus tooth hardness.

3. Do not utilize compressed air flow or coolant to cool off the ring.

4. An accurate centering and flattening of the parts in the flywheel can be an absolutely essential condition.

5. The original center distance should be maintained.

6. Cool power press system ought to be avoided because of to a substantial stress caused to the hardened area.

Engines with automated transmissions instead have a pressed steel plate with the starter ring equipment usually welded onto the exterior of the plate.