Logitech PRO RACING PEDALS Setup Manual page 7

ADJUSTING PEDAL SPRING FORCE
All of the pedals can have different levels of spring
force applied, using the springs (Gas and Clutch)
and elastomer dampeners (Brake) included in
the accessory box The process for starting this is
the same for all three pedals and involves lifting
the piston out of its location in the pedal module
The easiest way to achieve this is to wrap your hand
around the pedal face from the front and grip the
knurled edge of the piston body You then squeeze
the piston to dislocate it from its locking position
using the pedal face / arm as leverage and lift it out
of the cavity in the pedal module where it sits
7 ENGLISH