Stylus Pro 4880 Field Repair Guide 1/17/08
Paper Feed Timing Belt Adjustment Printer Component, Software Item, LCD Display, Printer Button  Page 157.
Paper Feed Timing Belt Adjustment
Note: This adjustment sets the Paper Feed Belt tension.
1. Remove the Left Side Cover.
2. Remove 2 Screws to free the Flexible Cable Support, and move it down, (out of the way).
3. Loosen the Screw that fastens the Paper Feed Motor Bracket, allowing the Tension Spring to 
1 Screw
1 Screw