2006-2009 Suzuki LT-R450 Service Manual, Page 383Get this manual
SERVICING INFORMATION
Complaint Insufficient brake power Symptom and possible causes
1Leakage of brake fluid from hydraulic system
Repair or replace ReplaceClean disc and padsReplaceBleed airReplenish AdjustRepair surface with sandpaperCorrect pad fitting or replaceTighten to specified torque ReplaceReplace brake fluidDisassemble and clean master cylinderBleed airReplenish fluid to specified level; bleed airReplace with correct fluid Tighten to specified torqueReplaceReplace piston andor cupClean and lubricateLubricateAdjust
2Worn pads 3Oil adhesion of engaging surface of padsshoe
4Worn disc
5Air in hydraulic system
6Not enough brake fluid in the reservoir