2008 Yamaha Raptor 250SE / 250SE2 Factory Service Manual, Page 88Get this manual
ADJUSTING THE PARKING BRAKE CHECKING THE BRAKE FLUID LEVEL
2Adjust: parking brake cable end length aLoosen the locknut and adjusting bolt bSlide back the rubber cover cLoosen the locknut dTurn the adjusting nut in direction or until the specified brake cable end length is obtainedeTighten the locknutfSlowly turn the adjusting bolt clockwise until resistance is feltgTurn it 18 counterclockwisehTighten the locknut 16 Nm (1.6 mkg, 11 ftlb)
iSlide the rubber cover to its original position