Replenishing Brake Fluid; Master Cylinder Fluid Level; Bleeding The Hydraulic Brake System - Polaris INDY TRAIL RMK Service Manual

MAINTENANCE / TUNE UP

Replenishing Brake Fluid

Remove brake fluid master cylinder reservoir cover. Add Polaris
brake fluid as required to bring the level up to the top of the fluid
level mark on the inside of the reservoir (B). The proper fluid level
is 1/4-5/16² (.6-.8 cm) below the lip of the reservoir opening.
NOTE: On some models, the brake fluid level can be seen
through the plastic reservoir. The fluid should be maintained be-
tween the minimum and maximum marks on the reservoir for
those models.
Inspect the reservoir to be sure it contains the correct amount of
fluid. Use only Polaris DOT 3 high temperature brake fluid.
Change fluid every 2 years or whenever the fluid is dark or con-
tamination is suspected.

Master Cylinder Fluid Level

1/4 - 5/16² (.6 - .8 cm) below lip of
reservoir opening
WARNING
Do not over fill the master cylinder. Fluid expansion could cause brakes to lock, resulting in serious injury or death.
Once a bottle of brake fluid is opened, use what is necessary and discard the rest. Do not store or use a partial
bottle of brake fluid. Brake fluid is hygroscopic, meaning it rapidly absorbs moisture from the air. This causes
the boiling temperature of the brake fluid to drop, leading to early brake fade and the possibility of serious injury.

Bleeding the Hydraulic Brake System

Air in the hydraulic brake system will cause a springy or spongy brake lever action. Bleeding is necessary to re-
move air from the system.
1. Remove brake fluid master cylinder reservoir cover and gasket.
CAUTION:Brake fluid is a hazardous material. Contact with decals, paint, and many plastics will cause damage.
Use proper precautions when handling brake fluid.
2. Fill the master cylinder reservoir and replace gasket and cover. Keep the fluid level 1/4-5/16² (.6-.8 cm) below
lip of reservoir opening.
3. Slip a rubber tube over the ball of the bleeder valve and direct the flow of fluid into a container.
WARNING
Never re-use brake fluid. Brake fluid is hygroscopic, meaning it rapidly absorbs moisture from the air. This causes
the boiling temperature of the brake fluid to drop, leading to early brake fade and the possibility of serious injury.
4. Squeeze brake lever a full stroke. Then unscrew bleeder valve
(A) 3/4 of a turn to release air.
5. Close bleeder valve first and then release brake lever.
Repeat steps 4 and 5 until fluid flows from bleeder valve in a solid
stream free of air bubbles. Do not allow reservoir to run dry or air will
be drawn into system.
6. Re-fill reservoir to proper level after bleeding operation. Do not
overfill the master cylinder.
7. Replace gasket and cover.
During the bleeding procedure make sure to keep the reservoir as lev-
el as possible to minimize the possibility of air entering the system.
2.18
1/4-5/16²
(.6-.8 cm)
Polaris DOT 3 High Temp Brake Fluid
PN 2870990
A
B
Bleeder Tube