[. . . ] Put the brackets on the plastic-sideparts of the stroller as shown and fix them by pushing them over the extended plastic-nose inside the stroller. [. . . ] Release the brackets by pulling them over the extended nose located at the inside of the stroller. For safety-reason do not install the Lifesaver-Carseat to the stroller while the Baby is sitting inside the carseat. In case damage is found on the brackets, stop using it and contact our Hauck local office or distributor. Only our Hauck VIPER ­ stroller can be matched with our Hauck Lifesaver-Carseat, or vice versa. [. . . ] Always ensure the Lifesaver-Carseat is securely installed on the stroller during use. [. . . ]