1998-2001 Yamaha YFM600FHM Grizzly Factory Service Manual, Page 277Get this manual
FRONT BRAKE
ICHASI"I
Oil delivery passage (brake caliper body) Blockage -7 Blowout with compressed air
A WARNING
Replace the caliper piston seal and dust seal whenever the brake caliper is disassembled
CALIPER ASSEMBLY
WARNING All internal brake components should be cleaned and lubricated with new brake fluid only before installation
Recommended brake fluid: DOT 4