2004-2009 Honda TRX450R/TRX450ER Service Manual, Page 411Get this manual
HYDRAULIC BRAKE Disconnect the front brake light switch connectorsRemove the master cylinder holder bolts, holder and master cylinderMASTER CYLINDER
I CONNECTORS
Remove the dust cover from the brake lever
DUST COVER
Remove the pivot nut, bolt and brake leverRemove the screw and brake light switch