2004-2009 Honda TRX450R/TRX450ER Service Manual, Page 413Get this manual
HYDRAULIC BRAKE ASSEMBLY MASTER CYLINDER PIVOT BOLT DUST COVER
SPRING MASTER PISTON SNAP RING
BRAKE LIGHT SWITCH
BRAKE LEVER
LEVER SPRING
Coat the master piston and piston cups with clean DOT brake fluidInstall the spring onto the piston endDo not allow the Install the spring and master piston into the master