1998-2004 Honda Foreman 450 factory service manual, Page 288Get this manual
BRAKE SYSTEM Remove the brake drum cover O-ringRemove the brake drum
Measure the brake drum 1.0
SERVICE LIMIT: 161.0 mm (6.34 in)
Inspect the brake drum for scoring, cracks and out of roundness
Check the brake drum cover dust seal for wear or DUST SEAL damageDrive it out of the drum cover if necessaryFor the installation of the dust seal, see page 14-22