2003 Suzuki LT-Z400 Factory Service Manual, Page 29Get this manual
MAINTENANCE
THE BRAKE FLUID CIRCUIT in the brake fluid circuit acts like cushion absorb of pressure developed by the master der and thus interferes with the full braking performance of the brake The presence of air is indicated by "on,n of the brake lever and also by lack of forcethe to which such air exposes the machine and rider, it is essential the brake and restoring the brake the brake fluid circuit be of air in the manner:Fill the or rear brake reservoir with the specified brake fluid to the top of the inspection window or the upper limit lineReplace the reservoir cap to prevent dirt fromAttach hose to the air and insert ttle free end of the hose into and release the brake lever or the brake sev" succession and squeeze trle lever or the it Loosen the air bleeder valve by of turn so that the brake fluid runs into ttlis will remove the tension of the brake lever causing it to touch the handlebar grip or the brake pedal reaching bottom of the strokeThen, close the air bleeder pump and squeeze the lever or the valve, Repeat this "'"0''''''' no contains afr bubbles