Fujitsu ScanSnap S500M Operator's Manual page 120

ATTENTION
8. Attach a new Pick roller to the Pick roller shaft.
Aligning the key with the slot on the Pick roller, insert the Pick roller shaft into the pick
roller.
9. Install the Pick roller with its shaft to the scanner.
Insert the right end of the shaft to the roller bushing (right), and set the shaft to the slot while
lowering it.
Pick roller shaft
104
If you push up the pick roller tab using your fingernail, your fingernail may be
chipped. If you cannot push it up successfully with your fingernail, you can use
a paper clip to push up the pick roller tab.
Key
Pick roller shaft
Pick roller
2
Pick roller
Slot
1