Polaris SPORTSMAN 850 HIGH LIFTER EDITION 2020 Owner's Manual page 89

BRAKES
HAND BRAKE
The front and rear brakes are hydraulic disc brakes, activated by moving the
single brake lever toward the handlebar. These brakes are self- adjusting.
Under normal operation, the diaphragm extends into the reservoir as fluid level
drops. If the fluid level is low and the diaphragm is not extended, a leak is likely
and the diaphragm should be replaced. To ensure proper diaphragm operation,
always fill the reservoir as needed whenever the cover is loosened or removed.
Do not overfill.
An over-full master cylinder may cause brake drag or brake lock- up, which
could result in serious injury or death. Maintain brake fluid at the recommended
The following checks are recommended to keep the brake system in good
operating condition. Check more often if brakes are used heavily under normal
operation.
1. Always keep brake fluid at an adequate level. See the Master Cylinder/Brake
Fluid section for details.
2. Check the brake system for fluid leaks.
3. Check the brakes for excessive travel or spongy feel.
4. Check the friction pads for wear, damage and looseness. Replace brake
pads when they are worn to .030" (0.762 mm).
5. Check the security and surface condition of the disc. Clean any grease using
a recommended brake cleaner or alcohol. Do not use spray lubricants or
other petroleum-based products. If you discover any damage (cracks,
excessive corrosion, warping) see your dealer for service before operating.
AUXILIARY FOOT BRAKE
The hydraulic auxiliary brake system requires no adjustment. Check the brake
fluid level frequently for the auxiliary brake system.
SEAT REMOVAL
To remove the seat, do the following:
1. Grasp one side of the seat near the rear edge.
2. Pull upward abruptly to disengage the under-seat fasteners.
3. Remove the seat.
WARNING
level. Do not overfill.
MAINTENANCE
87