2003 Yamaha YFM400FAR Kodiak Factory Service Manual, Page 274Get this manual
FRONT BRAKE CHAS
Brake fluid delivery passage (brake caliper body) Blockage Blow out with compressed air
WARNING
Replace the caliper piston seal and dust seal whenever the brake caliper is disassembled
ASSEMBLING THE FRONT BRAKE CALIPERS
WARNING
All internal brake components should be cleaned and lubricated with new brake fluid only before installationRecommended brake fluid: DOT 4