2011 Yamaha Raptor 125 Factory Service Manual, Page 129Get this manual
REAR BRAKE EAS22561
INTRODUCTION
EWA14101
WARNING
Brake disc thickness limit 3.5 mm (0.14 in) 5Adjust: Brake disc deflection Refer to "CHECKING THE FRONT BRAKE DISCS" on page 4-22Brake disc bolt 28 Nm (2.8 mkgf, 20 ftlbf) LOCTITE 6Install: Rear wheel Refer to "REAR WHEEL" on page 4-10EAS22580
Disc brake components rarely require disassemblyTherefore, always follow these preventive measures: Never disassemble brake components unless absolutely necessary If any connection on the hydraulic brake system is disconnected, the entire brake system must be disassembled, drained, cleaned, properly filled, and bled after reassembly Never use solvents on internal brake components Use only clean or new brake fluid for cleaning brake components Brake fluid may damage painted surfaces and plastic partsTherefore, always clean up any spilt brake fluid immediately Avoid brake fluid coming into contact with the eyes as it can cause serious injuryFIRST AID FOR BRAKE FLUID ENTERING THE EYES: Flush with water for 15 minutes and get immediate medical attentionCHECKING THE REAR BRAKE DISC 1Remove: Rear wheel Refer to "REAR WHEEL" on page 4-102Check: Brake disc Damagegalling Replace3Measure: Brake disc deflection Out of specification Correct the brake disc deflection or replace the brake discRefer to "CHECKING THE FRONT BRAKE DISCS" on page 4-22Brake disc deflection limit 0.15 mm (0.006 in) 4Measure: Brake disc thickness Measure the brake disc thickness at few different locationsOut of specification ReplaceRefer to "CHECKING THE FRONT BRAKE DISCS" on page 4-22EAS22570