How to Bleed and Replace Brake Fluid on a 2014 Polaris Scrambler XP 850 H.O.
Shop parts for a 2014 Polaris SCRAMX85H ATV.
This MotoSport proprietary guide walks you through draining and replacing the brake fluid on a 2014 Polaris Scrambler XP 850 H.O. Follow the steps exactly, use proper personal protective equipment, and never reuse old fluid. This model uses a hydraulic system with separate calipers front and rear; bleed the system to remove air and restore firm lever/pedal feel.
What you’ll need
- DOT 4 brake fluid (new, unopened) — DOT rating matters; Polaris recommends DOT 4 for this platform
- Clear hose (inner diameter to fit bleeder nipple)
- Catch bottle partially filled with fresh brake fluid or clean water
- Brake bleeder pump or vacuum pump, or a helper for manual bleeding
- 10mm or appropriate socket/wrench for bleeder fittings and caliper banjo bolts
- Torque wrench (for reinstalling banjo bolts and caliper hardware)
- Clean rags, gloves, safety glasses
- Small funnel or bleed funnel for master cylinder (if equipped)
- New banjo crush washers (recommended) and any replacement seals as needed
- Brake cleaner and spray bottle for cleanup
Safety and preparatory notes specific to the Scrambler XP 850 H.O.
- Park on level ground, engage parking brake, and block wheels. Lift the ATV securely on a stand if needed to access calipers.
- Protect painted plastic and frame with rags or cardboard — brake fluid will damage paint and plastics on this model.
- If your Scrambler has aftermarket skid plates or accessory reservoirs installed, remove or reposition them for clear access to the master cylinder and calipers.
- Inspect lines for chafing at common contact points near the frame and swingarm — the XP 850 can experience rubbing if plastics or mounts shifted.
- Replace any soft, cracked hose sections before bleeding. Old hoses can introduce air and leak after bleeding.
Overview of the system and bleed order
The Scrambler XP 850 H.O. typically has a single front master cylinder and a rear master (or proportioning routing) depending on equipment. Bleed starting at the caliper farthest from the master cylinder, then proceed to the next-farthest, and finish at the caliper closest to the master cylinder. If unsure which is farthest, follow this order as a safe general rule: rear caliper (if mounted farthest), then right front, then left front. If your bike uses a combined/split circuit, bleed each circuit separately following the same farthest-to-closest rule.
Step-by-step: drain and replace brake fluid
- Remove master cylinder reservoir cap. Clean around the cap so no dirt falls in. Use a clean cloth and inspect fluid level and condition.
- If fluid is dark or contaminated, siphon as much old fluid from the reservoir as possible with a turkey baster or syringe. Do not squeeze reservoir to force contaminated fluid into the system.
- Top reservoir with fresh DOT 4 fluid to prevent sucking air during the bleed. Keep reservoir full throughout procedure to avoid introducing air.
- Start at the caliper farthest from the master cylinder. Fit clear hose over the bleeder nipple and place the other end into your catch bottle partially filled with clean fluid to avoid drawing in air.
- Have a helper slowly depress the brake lever/pedal several times and hold it down, or use a vacuum/pressure bleeder. With lever held, open the bleeder nipple about 1/4 turn until fluid and air bubbles appear in the hose, then close nipple before the helper releases the lever. Repeat until fluid runs clear with no bubbles.
- Keep topping the master cylinder with fresh fluid to maintain level. Work methodically from farthest caliper to nearest caliper to purge trapped air.
- If using a one-person pressure or vacuum bleeder, follow the device instructions — maintain a constant supply of fresh fluid to the reservoir and monitor for bubbles during the cycle.
- When finished with each caliper, clean the bleeder nipple and torque it snugly. Replace any banjo crush washers when reinstalling the caliper line or after loosening banjo bolts. Use a torque wrench to tighten banjo bolts to factory specification or to a snug setting if specifications are not available; avoid over-torquing.
- Repeat the bleeding sequence for the other circuit (front/rear) as required until all circuits are clear and pedal/lever feel is firm.
- After bleeding, wipe any spilled fluid immediately, reinstall reservoir cap, and ensure fluid level is at the specified mark. Cap must be secure to prevent contamination.
Verifying the job
- Pump the brake lever/pedal several times to check firmness. A spongy feel indicates remaining air — repeat bleeding.
- Inspect all fittings, hoses, and calipers for leaks while pressure is applied.
- Lower the ATV and test brakes at slow speed in a safe area. Perform progressive stops to bed the system and confirm consistent performance.
Model-specific tips for the 2014 Scrambler XP 850 H.O.
- Master reservoir location can be recessed under plastic panels on some trim levels — remove the panel to access and avoid forcing the cap, which can crack the housing.
- The XP 850 H.O. uses robust calipers but check for seized pistons on older machines; stuck pistons will prevent a proper bleed and require caliper service or piston cleaning.
- If you have a factory ABS or traction system option (rare on this model), follow service procedures for that system — it may require cycle/activation procedures after bleeding.
- Replace rubber hoses if they show swelling under pressure or visible cracking. New OEM-style hoses reduce the risk of air entry and improve pedal feel.
- Keep any metal brake line fittings and banjo bolts free of corrosion — replace crush washers each time the line is disturbed to ensure a leak-free seal.
Fluid disposal and final maintenance
- Dispose of old brake fluid per local hazardous waste regulations — do not pour down drains.
- Record the service date and mileage. Brake fluid absorbs moisture over time; replace fluid every 1-2 years depending on usage and storage conditions.
- After a major service or component replacement, recheck torque on caliper and banjo bolts after a short ride.
Performing a thorough bleed and fluid replacement will restore braking performance and prolong components on your Polaris Scrambler XP 850 H.O. For OEM and performance brake parts compatible with this model, use MotoSport parts specifically listed for 2014 Polaris SCRAMX85H.
Related Shopping Categories
Shop Brake Fluid for a 2014 Polaris SCRAMX85H ATV.
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Shop Brake Lines for a 2014 Polaris SCRAMX85H ATV.
Shop Brake Tools for a 2014 Polaris SCRAMX85H ATV.
Disclaimer: This guide is provided for general informational purposes only and is not intended to replace your motorcycle's official owner's manual. Always refer to your manufacturer's documentation for model-specific instructions, torque specifications, safety procedures, and maintenance requirements. If you are unsure or inexperienced, consider seeking assistance from a qualified mechanic or technician.