Kyocera FS-C1020MFP - Manual (Page 439)

Push in the waste toner bottle until it clicks into place.
Push the green part all the way in.
Place the transfer unit down on the front cover.
Slide the transfer unit along the guide rails into the machine. When it stops, push on the
green PUSH mark until it clicks into place.
Using both hands, carefully push up the front cover until it closes.