Mitsubishi Fuso Canter 2013 Owner's Manual page 367

6. Slowly drive both vehicles forward. Do not race
either vehicle's engine.
7. When the towed vehicle becomes free, promptly
stop it each vehicle by applying the brake pedal.
To make the rope or wire rope easy to remove
from the towing hooks, let it become slightly
slack before stopping the towed vehicle.
13-35