Oki 80 Series - Manual (Page 45)

Maintenance 45
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.
3 Grasp the sheet guide. Lift it slightly, then slide it back.