How to Bleed & Replace Brake Fluid on a 2016 Can-Am DS90X

Shop parts for a 2016 Can-Am DS90X ATV.

This MotoSport guide covers safe, repeatable steps to flush and replace the brake fluid on a 2016 Can-Am DS90X. Follow all safety precautions, wear gloves and eye protection, and work on a level surface with the engine off. Use only the brake fluid specified by the manufacturer – if you don't have the owner's manual, confirm DOT rating before proceeding (many Can-Am youth models use DOT 3 or DOT 4; verify for your exact model year).

Tools & Supplies

  • Manufacturer-specified brake fluid (fresh, sealed container)
  • Clear plastic tubing that fits snugly over bleeder nipple(s)
  • Catch bottle or jar for old fluid
  • Syringe or turkey baster to remove old fluid from the reservoir
  • Wrenches for bleeder nipple (usually 7mm or 8mm on small ATVs)
  • Socket set / hex keys for removing caliper covers if needed
  • Rags, brake cleaner, and a small funnel or reservoir spout
  • Assistant (preferred) or a one-way vacuum bleeder

Model-Specific Notes for the DS90X

  • Small-frame youth ATVs like the DS90X have compact reservoirs. Keep fluid level topped during the procedure to avoid sucking air into the master cylinder.
  • The DS90X typically has simple hydraulic brake plumbing without ABS — this makes manual bleeding straightforward but still requires diligence to avoid contamination.
  • Use extra caution with rubber components: the DS90X's hoses and seals can age and may be brittle. Inspect lines and the master cylinder boot; replace any cracked or softened hoses before bleeding.
  • Brake fluid is corrosive to paint and plastics. Immediately clean any spills on plastic bodywork or painted surfaces with brake cleaner and a rag.

Preparation

  • Park ATV on level surface; secure with wheel chocks and place on a stable lift or stand so wheels can be rotated if needed.
  • Locate the brake master cylinder reservoir (handlebar brake & foot brake systems as applicable). Clean the cap area thoroughly to prevent contamination.
  • Remove the reservoir cap and diaphragm; use a syringe to remove most old fluid from the reservoir to minimize contamination when opening the system.
  • Top the reservoir with a small amount of fresh fluid so the reservoir is near full but not overfilled.

Bleeding Sequence & Method

General principle: bleed the caliper farthest from the master cylinder first, then work toward the nearest. On small ATVs the system is short & you may only have one caliper per circuit. Keep the reservoir topped at all times.

Manual Two-Person Bleed

  1. Attach clear tubing to the caliper bleeder nipple and place the other end in a catch bottle partially filled with fresh fluid to avoid drawing air back into the line.
  2. Have your assistant slowly pull the brake lever (or press the pedal) and hold steady. Open the bleeder nipple a 1/4 turn to let fluid flow. Close nipple before assistant releases lever/pedal. Repeat until clear, bubble-free fluid appears.
  3. Top the reservoir frequently so the level never drops to the bottom. If the reservoir runs dry, restart the process from the reservoir being full.
  4. After the circuit is clear, tighten the bleeder nipple to the proper snugness. Wipe nipple & caliper clean.

One-Person Vacuum or Pressure Bleed

  • Follow tool manufacturer instructions. Connect vacuum hose to bleeder nipple or use a pressure kit on the reservoir with regulated low pressure.
  • Operate the tool until clear fluid without bubbles flows into the catch container. Keep reservoir level topped when using pressure methods.

Replacing All Brake Fluid (Full Flush)

  1. Perform bleeding on each circuit/calliper until the reservoir is empty of old fluid and freshly added fluid is flowing out clear and free of air.
  2. Work methodically: add small amounts of fresh fluid to the reservoir between calipers rather than dumping a large amount at once.
  3. When final caliper is bled, fill reservoir to the correct fill line, reinstall diaphragm & cap securely.
  4. Clean around the reservoir and bleeder nipples. Dispose of old fluid per local hazardous waste regulations.

Post-Bleed Checks

  • Pump the brake lever or pedal several times; feel for firm, consistent resistance. Sponginess indicates air still in system — repeat bleeding.
  • Inspect for leaks at calipers, lines, hose fittings, and the master cylinder. Torque fittings to serviceable snugness if needed.
  • Check brake pad thickness and rotor condition while caliper is exposed. Replace pads or rotors showing significant wear.
  • Test brakes at low speed in a safe area before returning to normal use.

Maintenance Tips & Troubleshooting

  • Bleed fluid every 1-2 years or sooner if performance degrades or fluid looks dark/cloudy. Fresh fluid maintains boiling point & braking consistency.
  • If you see persistent bubbles, check for a cracked hose, leaking master cylinder seal, or a loose banjo bolt allowing air ingress.
  • Never mix DOT types (DOT 3, DOT 4, DOT 5.1). DOT 5 silicone fluid is not compatible with systems designed for glycol-based DOT 3/4/5.1.
  • If you encounter a stuck bleeder or rounded fastener, use proper tools or replace the fitting; avoid damaging calipers by forcing tools improperly.

Final Notes for DS90X Owners

  • Because the DS90X is a youth model, ensure brakes are tuned to predictable feel suitable for less-experienced riders — avoid overly aggressive pad choices that may surprise a young operator.
  • Inspect and replace the rubber reservoir diaphragm if perished; small tears will allow contamination or evaporative losses.
  • Keep replacement parts simple & OEM or MotoSport-approved replacements for best fit & reliability on this model.

Performing a careful brake fluid flush and bleed restores brake performance and safety on your DS90X. If you prefer professional help, book service with a qualified technician familiar with youth Can-Am ATVs.

Related Shopping Categories

Shop Brake Fluid for a 2016 Can-Am DS90X ATV.

Shop Brake Bleeders for a 2016 Can-Am DS90X ATV.

Shop Brake Pads for a 2016 Can-Am DS90X ATV.

Shop Brake Lines for a 2016 Can-Am DS90X ATV.

Shop Brake Tools for a 2016 Can-Am DS90X 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.