truck can be jacked up before you start.when its time to use the truck again. screw allen bolt in tight, screw octagon stud in tight and tighten jam nut. if stud is not tight, unit will not stop when driving, it will coast

on the brake valve their is an allen head bolt, loosen it so that you have about 2 threads holding it. then look down at the air cleaner toward the hydrostat. straight down from the cap of the air filter. their is an octagon stud with a jam nut.jam nut takes a 19 mm socket. I loosen the jam nut and the stud comes with it.screw the nut down till only 2 threads show. screw it back in an tighten. this is to help release the brake.pump brake pedal with your hand untill pedal is tight. jack up truck on 1 side and you should be able to push the drive wheel with your hand