The master cylinder assembly should begin with placing the cylinder in a vise followed by lubricating new No.1 and No.2 piston sub-assembly units with lithium soap base glycol grease before final installation. Straigt insertion of the piston prevents broken cylinder bore while safeguarding the rubber lips on pistons. After pushing the piston into place, install new components including the gasket and piston stopper bolt while torquing them to 10 Nm (100 kgf-cm, 7 ft-lbf). You should attach the snap ring working with snap ring pliers afterward apply lithium soap base glycol grease to a fresh O-ring before putting it on the master cylinder. To install the No.2 piston on the VSC version position its groove horizontally before adding a straight pin followed by pushing in the piston and placing the snap ring. The two new master cylinder reservoir grommets need lithium soap base glycol grease before they can be installed onto the master cylinder reservoir sub-assembly. Determine the proper placement of the master cylinder reservoir sub-assembly on the master cylinder by screwing it in then secure the brake master cylinder reservoir strainer followed by installation of the brake master cylinder reservoir filler cap assembly. Install the master cylinder sub-assembly and 2-way with the two nuts while torquing to 13 Nm (127 kgf-cm, 9 ft-lbf) before using Special Service Tool: 09023-00101 to attach six brake lines to the sub-assembly and torque them to 15 Nm (155 kgf-cm 11 ft-lbf). The workflow includes connecting the level warning switch connector followed by adding brake fluid to the reservoir and executing brake master cylinder bleeding of the brake line then examining the fluid level in the reservoir before leak inspection and finishing with air cleaner assembly installation.