Deflection pulley guides the cable precisely for smooth operation. The winch block doubles the pulling force of the winch and deflects and distributes the force, making it easier to adapt to the working conditions on the jobsite. The movable idler roller cover mounted on the mobile wiper will be pushed out of the way and turned to the side so that you can insert the rope into the pulley. When the cord is inserted into it, the two covers must be brought together again so that the two eyelets overlap. The eyelets must be fixed with straps or buckles made of textile material. Metal hooks or rings should not be used to secure the pulleys. In addition, the drum bearings should be lubricated before first use.