How to Bleed and Replace Brake Fluid on a 2015 Yamaha Grizzly 700 4X4 EPS

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This MotoSport exclusive procedure covers safe, effective replacement and bleeding of the hydraulic brake system on the 2015 Yamaha Grizzly 700 4X4 EPS. Follow these steps precisely to restore firm braking performance and avoid contamination or damage to components.

What you need

  • DOT 4 brake fluid (Yamaha recommends DOT 4 compatible fluid)
  • Clear plastic tubing that fits over bleeder screws
  • Catch bottle for old fluid
  • Brake bleeder wrench or box wrench set (8 mm typically for bleeders)
  • Disposable gloves & safety glasses
  • Clean rags and isopropyl alcohol
  • Hand pump or vacuum bleeder (optional but speeds process)
  • Torque wrench
  • Small funnel or pipette for filling master cylinder
  • Service manual for torque specs and OEM part numbers

Safety and prep

  • Work on a level surface with engine off and parking brake engaged.
  • Protect painted surfaces from brake fluid; it damages paint. Keep rags handy.
  • Wear gloves & eye protection. Brake fluid is corrosive.
  • Have new fluid open only when ready to use; DOT 4 absorbs moisture quickly.

Model notes specific to the 2015 Grizzly 700 4X4 EPS

  • The Grizzly 700 uses a front dual-caliper and rear single-caliper configuration on most trims; confirm your machine's layout before beginning.
  • Electronic Power Steering (EPS) variants like this model have extra electrical components nearby; avoid spilling fluid on connectors and wiring harnesses.
  • Bleeder screw sizes on Grizzly calipers are typically small – use the correct wrench to avoid rounding. Caliper bleeder orientation can trap air if improper sequence is used.
  • Master cylinder filler and reservoir caps are plastic & can be brittle with age – inspect and replace if cracked to ensure a proper seal.
  • If calipers show heavy corrosion or seals leak, replace caliper seals or the caliper assembly before bleeding for best results.

Step-by-step: complete fluid replacement and bleed

  1. Remove the seat and access panels to expose the master cylinder reservoir. Clean the reservoir cover & surrounding area with isopropyl alcohol to prevent contaminants from entering.
  2. Place a catch container under each caliper and position the bike securely on a stand so wheels are level with the ground.
  3. Open the master cylinder reservoir cap. Siphon or carefully remove old fluid until the level is low but not dry to avoid introducing air into the system.
  4. Top up the reservoir with fresh DOT 4 fluid. Keep the cap loose but present so the system can breathe; never run the reservoir dry.
  5. Identify bleeding sequence. For the 2015 Grizzly platform use this order for best air removal: far-side front caliper, near-side front caliper, rear caliper. If in doubt, bleed the wheel farthest from the master cylinder first, then work toward the closest.
  6. Attach clear tubing to the bleeder nipple and submerge the other end in a small catch bottle partially filled with old fluid to prevent air return.
  7. One-person method: have an assistant pump the brake lever (or pedal) slowly 3-5 times and hold pressure. Open the bleeder screw about a quarter turn to let fluid purge, then close before the assistant releases. Repeat until clear fluid with no bubbles emerges. Keep reservoir topped at all times.
  8. Power bleeder or vacuum bleeder method: attach device to bleeder nipple or reservoir per tool instructions. Operate until clear, bubble-free fluid flows, watching reservoir level closely. Never let reservoir run dry.
  9. Work each caliper in sequence until you see clean fluid and no air bubbles in the tubing. Periodically pump lever/pedal to confirm a firm feel. If lever feels spongy after bleeding, repeat the sequence.
  10. After final bleed, tighten bleeder screws to factory torque (consult service manual; typically light torque, confirm spec). Wipe all fittings clean and replace bleeder caps.
  11. Top the reservoir to the recommended level, reinstall the cover and secure. Clean any spilled fluid from painted or plastic surfaces immediately.
  12. Test brakes while stationary: apply lever/pedal several times to confirm firm resistance and proper free play. Re-check reservoir level after a short test ride and inspect for leaks.

Torque & maintenance tips

  • Torque caliper mounting bolts and bleeder screws to Yamaha specs from the service manual. Over-tightening bleeder screws can strip threads; hand-tight plus specified torque only.
  • Replace brake fluid every 2 years or sooner if discoloration or moisture contamination is noted.
  • Use only DOT 4 or manufacturer-approved fluid. Mixing incompatible fluids can damage seals and reduce braking performance.
  • Keep spare bleeder screw caps on hand; they prevent dirt ingress when trail riding.

Troubleshooting

  • Persistent spongy lever after several bleeds: check master cylinder for internal leaks or worn seals; inspect flexible hoses for swelling under pressure and replace if suspect.
  • Air that keeps reappearing: inspect for leaking fittings or cracked hoses on the circuit. A leaking union will draw air back into the system when pressure is released.
  • Brake fade after bleeding: contaminated pads/rotors from spilled fluid will require replacement or thorough cleaning; brake fluid on pads reduces friction and is not recoverable.

Final checks

  • Perform a slow-speed controlled ride to validate braking performance before any high-speed use.
  • Re-inspect reservoir level and all fittings after the first ride and again after 50 miles of use.
  • Record the service date and fluid type in your maintenance log for future reference.

For OEM replacement parts, seals, bleeder screws or DOT 4 fluid specific to the 2015 Yamaha Grizzly 700 4X4 EPS, trust MotoSport for parts & expertise tailored to your ride.

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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.