14. REAR WHEEL/SWING ARM/ HYDRAULIC BRAKE ATV 50 Assembly Before assembly, apply brake fluid to all removed parts. Install the spring together with the 1st rubber cup. · During assembly, the master cylinder, main piston and spring must be installed as a unit without exchange. · When assembling the piston, soak the cups in brake fluid for a while. Install the main piston and snap ring. Fluid Tube Bolt Install the rubber cover. Install the brake lever. Install the brake fluid tube with the bolt and two sealing washers. Then, install the rearview mirror. Fill the brake reservoir with recommended brake fluid to the upper level. Bleed air from the hydraulic brake system. (Refer to 14-18.) Sealing Washer Place the brake master cylinder on the handlebar and install the master cylinder holder with the "UP" mark facing up, aligning the tab on the holder with the hole in the handlebar. First tighten the upper bolt and then tighten the lower bolt. Torque: 1.2 kgf-m (12 N-m, 8.6 lbf-ft) "UP" Mark 14-22