2008 Yamaha Rhino YXR70FX Factory Service Manual, Page 385Get this manual
FRONT AND REAR BRAKES
5Check: brake fluid level Brake fluid level is under the "MIN" level line Fill upRefer to "CHECKING THE BRAKE FLUID LEVEL" in chapter 36Adjust: brake pedal free play Refer to "ADJUSTING THE BRAKE PEDAL" in chapter 3