PERIODIC MAINTENANCE AND MINOR REPAIR6-206EAU22730Changing the brake fluidHave a Yamaha dealer change thebrake fluid at the intervals specified inthe NOTE after the periodic mainte-nance and lubrication chart. In addition,have the oil seals of the master cylin-ders and calipers as well as the brakehoses replaced at the intervals listedbelow or whenever they are damagedor leaking. Oil seals: Replace every twoyears. Brake hoses: Replace every fouryears.EAU22760Drive chain slackThe drive chain slack should bechecked before each ride and adjustedif necessary.EAU41410To check the drive chain slack1. Install the removable sidestandand place the motorcycle on it.NOTE:When checking and adjusting the drivechain slack, there should be no weighton the motorcycle.2. Shift the transmission into the neu-tral position.3. Move the rear wheel by pushingthe motorcycle to locate the tight-est portion of the drive chain, andthen measure the drive chain slackas shown.4. If the drive chain slack is incorrect,adjust it as follows.EAU41480To adjust the drive chain slack1. Loosen the axle nut and the lock-nut on each side of the swingarm.2. To tighten the drive chain, turn theadjusting bolt on each side of theswingarm in direction (a). To loos-en the drive chain, turn the adjust-ing bolt on each side of theswingarm in direction (b), and thenpush the rear wheel forward.Drive chain slack:35.0–45.0 mm (1.38–1.77 in)1. Drive chain slack