Checking The Rear Brake Pads; Checking The Brake Fluid Level - Yamaha YFM90RA Owner's Manual

Tightening torque:
Locknut (rear brake caliper):
16 Nm (1.6 m·kgf, 11.6 ft·lbf)
WARNING
Operating with improperly serviced or adjusted
brakes could cause the brakes to malfunction,
resulting in reduced braking performance.
This could increase the chance of a collision or
accident. After adjusting the parking brake free
play, block the rear of the ATV off the ground
and spin the rear wheels. Check to make sure
there is no brake drag. If brake drag is noticed,
perform the adjustment again.

Checking the rear brake pads

The rear brake pads must be checked for wear at the
intervals specified in the periodic maintenance and
lubrication chart. Each brake pad is provided with
wear indicator grooves, which allow you to check the
brake pad wear without having to disassemble the
brake. If a brake pad has worn to the point that the
wear indicator grooves have almost disappeared,
have a Yamaha dealer replace the brake pads as a
set.
1. Wear indicator groove

Checking the brake fluid level

Insufficient brake fluid may allow air to enter the brake
system, possibly causing it to become ineffective.
Before riding, check that the brake fluid is above the
minimum level mark and replenish if necessary.
A low brake fluid level may indicate worn brake pads
and/or brake system leakage. If the brake fluid level
is low, be sure to check the brake pads for wear and
the brake system for leakage.
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