A baler has a chamber, a plunger, wherein the plunger is connected to a plunger driving mechanism that is adapted to reciprocally move the plunger in the baling chamber, a hydraulic brake mechanism comprising a master cylinder, a brake cylinder and a lever, wherein the lever is provided to operate the master cylinder, which master cylinder is fluidly connected to the brake cylinder arranged to act on the plunger driving mechanism, wherein the hydraulic brake mechanism further comprises a spring arranged between the lever and the master cylinder.
