Place a wood block behind the rear wheel of the Clark forklift to prevent it from moving while you are attempting to adjust the parking brake. Locate the parking brake handle next to the steering column, and open the operator compartment cover.
Determine whether the parking brake cable is too loose or too tight by pulling up on the cable. If it moves more than a 1/2 inch, the cable needs to be tightened; if it moves less than a 1/4 inch, it needs to be loosened.
Turn the nut on the cable with an open-end wrench. Turn the nut clockwise a half-turn at a time to tighten the brake and counterclockwise a half-turn at a time to loosen the brake.
Activate the parking brake lever between each adjustment to determine how much adjustment is needed. Proper adjustment will cause the parking brake cable to move between a 1/4 and 1/2 inch.
Close the operator compartment cover.