Coleman HS400UTV-2 Owner's Manual page 137

Periodic Maintenance and Adjustment 8-33
Rear brake pad check
Each brake pad is provided with wear
indicator grooves, which allow you to check
the brake pad wear without having to
disassemble the brake system. To check the
brake pad wear, check the wear indicator
grooves. If a brake pad has worn to the point
that the wear indicator grooves have almost
disappeared, have a service center replace
the brake pads as a set.
1. Brake pad wear indicator groove