Call Kitchenaid to request assistance.

https://www.kitchenaid.com/resources/contact-us.html

Another model (not yours) on the FIXYA site only had 3.0 cu ft capacity and that information was received by calling KitchenAid.

http://www.fixya.com/support/t1445719-capacity_kitchenaid_washer_model

About 1/2 full.