How to bleed and replace brake fluid on a 2012 Can-Am Outlander 800R X MR
Shop parts for a 2012 Can-Am Outlander 800R X MR ATV.
This step-by-step MotoSport guide walks you through safely flushing and bleeding the brake system on a 2012 Can-Am Outlander 800R X MR. Follow these instructions carefully, use quality DOT4 fluid, and observe safety precautions. If your machine has factory ABS or combined braking features, see the model notes section before starting.
Tools & supplies
- DOT4 brake fluid (new, unopened container)
- Brake bleeder kit or clear tubing and a catch bottle
- 10 mm wrench (bleeder screws)
- Flat screwdriver and pliers for reservoir clamp
- Clean rags and isopropyl alcohol
- Jack stands or ramps to raise the ATV safely
- Protective gloves & eye protection
- Torque wrench for reassembly checks
Model-specific notes for the 2012 Can-Am Outlander 800R X MR
- Factory system uses DOT4 fluid. Do not mix with DOT3 or DOT5 (silicone).
- This model commonly uses hydraulic single-disc front brakes and a rear disc. Some variants have a combined brake system; if your brake lever actuates both front and rear, bleed both circuits in sequence (see below).
- ABS was not standard on most 2012 Outlander ATVs; if your unit has an ABS module, avoid opening ABS valve housings and consult a dealer for ABS-specific procedures.
- Brake lines and calipers are exposed to mud & debris on X MR models. Inspect hoses, fittings, and caliper pistons for wear or contamination before reassembly.
Preparation
- Park ATV on level ground, engine off, ignition key removed. Block wheels and secure the machine on stands so wheels can rotate freely.
- Clean area around master cylinder reservoir cap. Remove reservoir cap and diaphragm carefully to minimize contamination. Top up with DOT4 but do not overfill.
- Locate bleed nipples on calipers. Typical layout: two front calipers each with a single bleeder, one rear caliper bleeder. If combined system, a proportioning valve or unit may be present between circuits.
- Prepare catch bottle with a little fresh brake fluid to prevent air being drawn back in. Attach clear tubing to bleeder and clamp bottle below the caliper level.
Bleeding sequence
Follow this sequence for single-circuit systems: farthest wheel from master cylinder first, then next farthest, finishing with the closest. For most Outlander layouts: right rear (if applicable) – left rear – right front – left front. If only three bleeders exist, follow the same principle: farthest to nearest.
Two-person manual bleed (recommended for reliability)
- Partner pumps the brake lever slowly several times and holds pressure.
- Open the bleeder screw about 1/8 turn until fluid and bubbles flow into tubing. Close bleeder while partner holds pressure. Repeat until clear, bubble-free fluid flows and no air appears.
- Top up reservoir frequently to prevent it running dry. Never let the reservoir go empty during the procedure.
- Proceed wheel-to-wheel in the sequence above.
- After all calipers are bled, have partner apply steady pressure to lever and hold while you tighten bleeder screws to spec (light snug, then torque if available per service manual). Check lever firmness.
One-person vacuum or pump-style bleeder
- Attach vacuum bleeder to caliper bleeder and pump to draw fluid while reservoir is topped up.
- Open bleeder and allow fluid to flow until clear and bubble-free. Close bleeder before removing vacuum.
- Repeat sequence wheel-to-wheel. Keep reservoir full throughout.
Final checks & reassembly
- Inspect bleeder screws for leaks and tighten to correct torque. Clean any spilled fluid immediately with water and isopropyl alcohol — brake fluid can damage plastics and paint.
- Reinstall diaphragm and reservoir cap securely.
- Pump brakes with foot/hand lever until firm. If the lever feels spongy, repeat bleeding until firm and free of air.
- Test brake function at low speed in a safe area before riding hard. Check for leaks and recheck fluid level after a short test ride.
- Properly dispose of old brake fluid according to local regulations.
Troubleshooting
- Persistent spongy lever after multiple bleed attempts: inspect master cylinder seals, caliper pistons, and hose condition for internal collapse. Replace any suspect parts.
- Air that returns after tightening bleeders: ensure bleeder threads and hose connections are clean and seals intact. Replace bleeder screw if damaged.
- If you encounter uneven braking feel, bleed each caliper independently and verify caliper piston movement and pad condition are equal.
Maintenance tips specific to X MR owners
- After mud runs, flush brake fluid annually or every 12 months even if appearance seems fine — water contamination lowers boiling point and accelerates component corrosion.
- Inspect caliper mounts and brake line routing for chafing from aggressive trails. Replace any lines with cracks or soft spots immediately.
- Keep a small DOT4 bottle and basic bleed tools in your service kit for field adjustments, but perform full flushes in a clean shop environment.
If at any point you suspect ABS involvement, significant component wear, or if brakes remain unreliable after bleeding, stop and consult a MotoSport service professional or the dealer for diagnostic service.
Related Shopping Categories
Shop Brake Fluid for a 2012 Can-Am Outlander 800R X MR ATV.
Shop Brake Bleeders for a 2012 Can-Am Outlander 800R X MR ATV.
Shop Brake Pads for a 2012 Can-Am Outlander 800R X MR ATV.
Shop Brake Lines for a 2012 Can-Am Outlander 800R X MR ATV.
Shop Brake Tools for a 2012 Can-Am Outlander 800R X MR 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.