Martin Yale 2051 Manual

2051-2045 Retarder adjustment
The retarder is also called the sheet separator. It is directly below the feed wheel.
Push the feed tray down and lock in the paper loading position.
Lift the top cover.
Press the retarder pressure release button.
This will release the pressure against the feed wheel and allow you to turn the
feed wheel in the direction of paper feed. While the button is depressed the feed
wheel should turn freely.

Martin Yale 2051 Specifications

General

Fold Capacity	Up to 5 sheets at a time
Throat Width	8.5"
Power Requirements	115V, 60Hz
Fold Types	Letter, Half, Z-fold, Double Parallel
Fold Speed	8, 600 sheets per hour