2006-2009 Suzuki LT-R450 Service Manual, Page 252Get this manual
CHASSIS
BRAKE FLUID REPLACEMENT
Place the vehicle on level surface and keep the handlebar straight Remove the master cylinder reservoir cap and diaphragm Suck up the old brake fluid as much as possible Fill the reservoir with new brake fluidSpecification and classification: DOT 4
Connect clear hose to the air bleeder valve and insert the other end of the hose into receptacle Loosen the air bleeder valve and pump the brake lever until the old brake fluid is completely out of the brake system Close the air bleeder valve and disconnect the clear hoseFill the reservoir with new brake fluid to the upper mark of the reservoirBrake air bleeder valve: Nm (0.6 kgf-m, 4.5 Ib-ft)
ICAUTION I