How to Bleed & Replace Brake Fluid on a 2018 Can-Am Outlander MAX 450 DPS

Shop parts for a 2018 CAN-AM OLM450DPS ATV.

This MotoSport-exclusive service guide walks you through a complete brake fluid change and bleed on the 2018 Can-Am Outlander MAX 450 DPS. Follow this step-by-step procedure for safe, consistent braking performance. Read all steps before starting and work in a clean, well-ventilated area.

Safety & prep

  • Wear safety glasses and nitrile gloves; brake fluid is corrosive to paint and plastics.
  • Work on a flat surface; block wheels and set parking brake. Turn ignition OFF and remove key.
  • Have rags and a catch container for old fluid. Dispose of used fluid per local regulations.
  • Inspect brake lines, fittings, calipers and master cylinder for leaks or damage before proceeding. Replace any damaged components.

Tools & supplies

  • DOT 4 brake fluid (use fresh, unopened container)
  • Clear plastic tubing that fits snugly over bleed nipples
  • Catch bottle or reservoir for old fluid
  • Wrenches for bleed nipples (usually 8mm-11mm); adjustable wrench for fittings
  • Vacuum bleeder, pressure bleeder, or helper for manual pump method
  • Clean turkey baster or syringe for reservoir flushing
  • Torque wrench (refer to service manual for torque specs)

Model-specific notes for the 2018 Outlander MAX 450 DPS

  • The master cylinder reservoir is mounted at the handlebars; use care with wiring harness and DPS components nearby.
  • DPS (Dynamic Power Steering) is hydraulic on this model. Avoid introducing brake fluid into DPS components and keep reservoirs clearly separate.
  • Brake line routing and fittings are specific to the MAX wide chassis – inspect clamps and clips that secure lines to the frame while you work.
  • Can-Am uses DOT 4 as factory recommended fluid for the 2018 Outlander 450 DPS. Do not mix DOT 3/mineral oils with DOT 4 or DOT 5 fluids.

Procedure overview

  1. Remove the reservoir cap & diaphragm and clean around the opening to prevent contamination.
  2. Siphon or remove old fluid from the master cylinder reservoir until you reach a low but safe level. Do not let the reservoir run dry unless you are prepared to thoroughly purge air from the system.
  3. Top the reservoir with fresh DOT 4 fluid. Keep the cap off during bleeding, and maintain fluid level above the minimum mark throughout.
  4. Identify caliper bleed screws at each wheel. Fit clear tubing on the nipple and submerge the other end in a bottle with a small amount of clean brake fluid to prevent air re-entry.
  5. Bleed in the correct sequence: farthest caliper from the master cylinder first, moving to the nearest. On the Outlander MAX 450 DPS that typically means: rear caliper first, then the front calipers left/right depending on which is farthest. If unsure, follow farthest-to-nearest rule relative to the handlebar master cylinder.

Bleeding methods

1) Vacuum bleeder (recommended for a single tech)

  1. Attach vacuum pump to the bleed nipple with tubing and open nipple 1/4 to 1/2 turn.
  2. Create vacuum and pump fluid until no more bubbles appear in the tubing and the fluid at the master reservoir looks clear.
  3. Close nipple while vacuum is applied, then remove pump. Move to next caliper maintaining reservoir level.

2) Pressure bleeder (fastest for a full flush)

  1. Attach pressure bleeder to the master cylinder reservoir per tool instructions. Pressurize to recommended PSI for DOT fluid (usually low pressure, under 15 psi).
  2. Open each bleed nipple in sequence until clear fluid flows with no air. Close nipple before moving on.

3) Manual helper or pedal/lever pump method

  1. If using a helper: have helper slowly pump the brake lever/release & hold while you open the bleed nipple to let fluid/air out, then close the nipple, then have helper release the lever. Repeat until clear fluid appears.
  2. For single-operator manual bleeding, use a one-way check-valve or a vacuum/pressure adapter to avoid reintroducing air.

Flush vs. Partial Replace

For a full brake fluid change, keep bleeding until new fluid runs through all calipers and into the catch bottle, refreshing the master reservoir as needed. For a partial top-off, simply remove bubbles and ensure a firm lever feel – full flush is recommended at least every 2 years or sooner if fluid is contaminated.

Final checks & finishing

  • Ensure bleed nipples are closed and torque to manufacturer spec where applicable. If you don't have the spec, snug then back off slightly; avoid rounding fittings.
  • Top reservoir to the proper level, install diaphragm and cap, and clean any spilled fluid immediately.
  • Cycle the lever/ pedal several times to confirm firm, consistent feel. If lever remains spongy, repeat bleeding sequence.
  • Check for leaks at all fittings, calipers and lines after a short test ride, then re-torque fittings if required.
  • Bed-in new pads if you installed brakes components: perform several controlled stops from low speed to moderate speed to transfer pad material to rotors.

Troubleshooting

  • Spongy lever after bleeding: likely trapped air — repeat full bleed procedure; ensure reservoir never went dry.
  • Persistent leaks or soft lever: inspect master cylinder, caliper seals, and hose condition; replace any soft or swollen hoses and leaking seals.
  • Contaminated fluid (dark, dirty): full system flush mandatory. Contaminated fluid reduces boiling point and braking reliability.
  • DPS interference: if steering assist fluid or components show contamination, isolate and service DPS separately; never mix fluids between systems.

Maintenance schedule & tips

  • Recommended brake fluid service interval: replace every 2 years or sooner if exposed to water or heavy use.
  • Keep a sealed spare bottle of DOT 4 in your garage for topping up during routine checks.
  • Inspect lines and clamps whenever you service brakes – MAX-wide chassis components can rub if clips are missing or worn.
  • Record the service date and mileage/hours in your maintenance log.

Follow this MotoSport guide to keep the 2018 Can-Am Outlander MAX 450 DPS brakes safe and reliable. If you find damaged calipers, hoses or the master cylinder during inspection, choose high-quality replacement parts and hardware to maintain performance and safety.

Related Shopping Categories

Shop Brake Fluid for a 2018 CAN-AM OLM450DPS ATV.

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Shop Brake Lines for a 2018 CAN-AM OLM450DPS ATV.

Shop Brake Tools for a 2018 CAN-AM OLM450DPS 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.