Oki B6200 Maintenance Manual page 213

After installing, make sure that the 3 claws of the GUIDE ASSY SD R150 sit
correctly in the grooves of the HOUSING TOP 150.(NOTE3).
5) While pressing down the hook of the HOUSING TOP 150, install the GUIDE ASSY SD L150
(PL2.1.11) to the HOUSING TOP 150.
After installing, make sure that the 3 claws of the GUIDE ASSY SD L150 sit
correctly in the grooves of the HOUSING TOP 150.
6) Push the PLATE ASSY BTM downward to lock.
7) Install the GEAR PINION (PL2.1.12) to the HOUSING TOP 150.
When installing the GEAR PINION, make sure the GUIDE ASSY SD R150 and GUIDE
ASSY SD L150 are completely opened. If not, the side register may be misaligned.
8) Install the COVER CST (PL2.1.1) to the 150 PAPER CASSETTE.
Chapter 3 Removal and Replacement Procedures (RRPs)
3 – 49