Do we need to kasher the coffee machine for pesach use?
It can’t be koshered on Pesach
Sephardim would have to, if they use it for mostly Chametz coffees. Otherwise it can be used.
Ashkenazim, would have to, if they used a chametz coffee in it.
Not familiar with one that would be chametz, but everything is possible.
Is it because of the plastic components?
The kashering would be for the metal parts.