This site doesn't sell parts - it just helps with information.
Firstly, you need to post what model Elna as Tavarao Switzerland made several compuerised models, the 5000,7000, 9000, and the current Elna range are mostly computerised models now.
To find the part you need, identify your model number by looking on the plate near the power inlet on the side of the machine.
You could call a local Elna dealership, search Yellow Pages or online. Or the Elna head office in your country is often a great place to start. go to www.elna.com
and then enter your country, then go to that website. Then find the Contact Us page to see their phone number and or email address. Often best to go to the source first off rather than be told that parts arent available when they may well still be able to be purchased.