2008 Polaris ATV Sportsman 300 400 H.O. Service Manual, Page 47Get this manual
MAINTENANCE Check the fluid level of the foot brake master cylinder reservoirAdd fluid to indicated level on reservoirSportsman 300 Located on the lower right side of the ATVSportsman 400 H.OLocated under the front storage box cover
Brake Pedal Freeplay
Reservoir Foot Brake
Use Polaris DOT Brake Fluid (PN 2872189) Check brake system for fluid leaks, excessive travel or spongy feel Check brake pads for wear, damage or looseness Check surface condition of the disc Inspect thickness of brake pad friction material1
Check foot brake effectiveness by applying approximately 50 lbs(23 kg) of downward force on the pedalThe top of the pedal should travel no more than inch (25.4 mm)
CAUTION
DO NOT OVERFILL! Excess brake fluid may cause brake dragFill to the indicated fill line or specification