Mercury GO BOLDLY SeaPro 500hp Operation And Maintenance Manual page 46

Remove the access cover from the front of the ERC to expose the adjustment
screws. Using a hex wrench turn the desired screw clockwise to increase
tension, or counterclockwise to decrease tension. Install the access cover after
the desired tension is achieved.
a b
a
Single-handle console ERC
a - Access cover
b - Detent adjustment screw
c - Handle friction adjustment screw
FEATURES AND CONTROLS
71261
Panel mount ERC (ERC shown not
installed, access cover removed)
a - Handle friction adjustment screw
b - Detent adjustment screw
36
b
c
71976
eng