2009 Suzuki 400 LTZ Quad Sport Service Manual, Page 369Get this manual
4A-13 Brake Control System and Diagnosis: When installing the brake light switch, align the projection on the switch with the hole on the master cylinder Front Brake Master Cylinder Parts Inspection
Refer to "Front Brake Master CylinderBrake Lever Disassembly and Assembly (Page 4A-12)"
B933H24106013
Master Cylinder Inspect the master cylinder bore for any scratches or other damage
I933H1410030-01
Apply grease to the brake lever pivot bolt Apply grease to the contact point between piston and brake lever: Grease 9900025100 (SUZUKI Silicone Grease or equivalent)