Before you received goods and checking the spare parts condition if all are good.
Étape 1: Installez d’abord la bande d’engrenages en plastique sur les plaques métalliques supérieure et inférieure, et appuyez sur le bouton à la main.
Étape 2: Then fix the two square pillars with screws (washers are required under each screw) Step3: Then install the fixed side plate, and fix it with screws and washers on both sides (note: the metal of the fixed side plate should be aligned with one side of the plastic gear strip) Step4: Install the active side plate and after that fixed another two square pillars with screws.(washers are required under each screw) Step5: Use both hands to push the movable side plate upwards until the two PINS catch the upper and lower metal plates Step6: Finally, install the metal gear lever
