PERIODIC MAINTENANCE AND ADJUSTMENT7-227EAU51721Changing the brake fluidHave a Yamaha dealer change thebrake fluid at the intervals specified inthe periodic maintenance and lubrica-tion chart. In addition, have the oil sealsof the master cylinders and calipers aswell as the brake hoses replaced at theintervals listed below or whenever theyare damaged or leaking. Oil seals: Replace every twoyears. Brake hoses: Replace every fouryears.EAU22762Drive chain slackThe drive chain slack should bechecked before each ride and adjustedif necessary.EAU41413To check the drive chain slack1. Install the removable sidestandand place the motorcycle on it.TIPWhen checking and adjusting the drivechain slack, there should be no weighton the motorcycle.2. Shift the transmission into theneutral position.3. Measure the drive chain slack asshown.4. If the drive chain slack is incorrect,adjust it as follows.EAU41484To adjust the drive chain slackConsult a Yamaha dealer before ad-justing the drive chain slack.1. Loosen the axle nut and the lock-nut on each side of the swingarm.2. To tighten the drive chain, turn thedrive chain slack adjusting bolt oneach side of the swingarm in di-rection (a). To loosen the drivechain, turn the adjusting bolt oneach side of the swingarm in di-rection (b), and then push the rearwheel forward. NOTICE: Improp-er drive chain slack will over-Drive chain slack:35.0–45.0 mm (1.38–1.77 in)1. Drive chain slack