My mower brakes do not work

The adjuster is on the right side just in front of the rear wheel. its the clutch rod / brake rod . you will see a spring on the shaft with two nuts one used to lock the adjustment. loosen the nuts and turn the nuts so the nuts go towards the back of the tractor. keep checking the peddle for brake .

Park on a firm, flat, level surface (garage floor, driveway, etc.
Tractor in neutral, engine OFF look in front of the right side rear tire and locate your brake rod leading to the brake arm on the side of the transaxle. You will note in the bottom center of the brake arm there is a bolt with a nut sticking out about a 1/4 to 1/2 inch. Tighten this nut just until you can no longer roll the tractor back and forth using the fender or the wheel. At this point, back the not off 1/2 TURN ONLY this should give you brakes. If it does not, you are going to have to do a lot more than just adjust them