Oki 490 - Manual (Page 44)

44 Microline 490/491 User’s Guide
3 Grasp the sheet guide. Lift it slightly, then slide it back. 4 Pivot the sheet guide forward and gently rest it against the
roller assembly.
Careful!
If you push the sheet guide too hard against the roller
assembly, it may dislodge it. If it does, be sure to reseat the
roller assembly before continuing.