Canon LBP3360 User Manual page 260

If the paper feeder is installed, set the paper cassette of the paper feeder also.
CAUTION
When setting the paper cassette, be careful not to catch your fingers.
25
Open the front cover.
Holding the opening of the front cover, open it gently.
26
Take the toner cartridge out of the protective bag.
Paper Jams 8-23
8