Gestetner 9920 Operator's Manual page 171

Installation
D
Hold the Multi - purpose Feeder as shown and fit it in the slots provided.
Note
Do not hold the Multi - purpose Feeder by the extension, it could be dam-
aged.
E
Before you use the Multi - purpose Feeder , you need to change the paper
size setting to match the size of paper you will be using by function 36. See
P.103 "Changing The Paper Size Settings"
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