How to Bleed and Replace Brake Fluid on a 2011 Yamaha Grizzly 550 4X4
Shop parts for a 2011 Yamaha Grizzly 550 4X4 ATV.
This MotoSport exclusive service guide walks you through a safe, thorough brake fluid change and bleed for the 2011 Yamaha Grizzly 550 4X4. Follow these steps carefully to restore braking performance and protect the brake system from moisture and contamination.
What you need
- Brake fluid: DOT 4 recommended by MotoSport for Grizzly 550 use – confirm with your owner’s manual if unsure
- Clear vinyl tubing to fit bleeder nipples
- Catch bottle & clamp or one-way bleed bottle
- 9 mm and 10 mm wrenches (bleeder & banjo/line fittings as required)
- Clean rags, gloves, safety glasses
- Syringe or turkey baster for reservoir fluid removal
- Vacuum bleeder or hand pump (optional) for faster bleeding
- Brake cleaner, new banjo crush washers if removing lines
- Floor jack or ramps and stands to safely lift the ATV if needed
Model notes for the 2011 Yamaha Grizzly 550
- The Grizzly 550 uses a single master cylinder with separate calipers for front and rear brakes; bleed the brake furthest from the master cylinder first.
- This model is sensitive to contaminated fluid — moisture causes soft pedal feel and corrosion in ABS sensors (if equipped), so replace fluid every 1-2 years depending on use.
- Inspect the rubber hose routing for chafing at the steering and suspension travel points common on Grizzly ATVs.
- If the caliper slide pins are tight or pitted, service them while the wheels are off to prevent uneven pad wear after bleeding.
Safety first
- Work on a level surface; secure the ATV with the parking brake off when bleeding to allow pistons to move.
- Brake fluid will damage paint & plastics — wipe spills immediately with clean water and brake cleaner.
- Never reuse drained fluid. Dispose of old fluid per local regulations.
Step-by-step brake fluid replacement & bleeding
- Park the ATV upright and cold. Remove any body panels that block reservoir access.
- Clean the master cylinder reservoir cap area thoroughly to keep debris out. Remove the cap and diaphragm carefully.
- Using a syringe or turkey baster, remove as much old fluid from the reservoir as possible without letting the reservoir run dry. Refill with fresh DOT 4 fluid to the max level.
- Identify the bleed order. For the Grizzly 550, use the sequence farthest to closest from the master cylinder: rear passenger side, rear driver side, front passenger side, front driver side (adjust if your master cylinder location differs).
- Attach clear vinyl tubing to the bleeder nipple and submerge the other end in a catch bottle partially filled with fresh fluid or a one-way bleed bottle to prevent air backflow.
- Have an assistant slowly depress the brake lever/pedal several times and hold it down. With the lever held, open the bleeder nipple 1/4 to 1/2 turn and let fluid run until the stream is steady and free of bubbles, then close the nipple before releasing the lever. Repeat until no bubbles appear.
- If using a vacuum or pressure bleeder, follow the tool instructions. Start at the farthest caliper and work toward the nearest, keeping the reservoir topped up to avoid drawing air into the system.
- After each caliper, wipe the bleeder nipple and torque to spec if you removed banjo bolts (consult shop manual or MotoSport parts tech). Replace crush washers when reinstalling banjo fittings.
- Confirm total replacement by flushing until clear, new fluid appears at each bleeder and the reservoir shows fresh fluid with no debris. Do not overfill the reservoir; keep fluid between min & max marks.
- Securely tighten all bleeder nipples and reinstall the diaphragm & reservoir cap. Clean all spilled fluid and reinstall bodywork.
- Pump the brake pedal/lever with the engine off until firm. Start the engine and check again for firmness and leaks. If soft, repeat bleeding sequence focusing on the caliper(s) that still show air.
Final checks & break-in
- Inspect for leaks at banjo bolts, bleeder nipples, and hoses under pressure.
- Test brakes at low speed in a safe area to confirm proper function before normal riding.
- Bed new pads if installed: perform several controlled stops from low speed to moderate speed to mate pads and rotors.
Common issues & MotoSport tips
- If brake feel remains spongy after thorough bleeding, inspect master cylinder seals & caliper pistons for wear. Rebuild or replace as needed.
- Replace rubber hoses every few years or if you see cracking/swelling; old hoses can collapse internally and cause poor braking even when lines test leak-free.
- Keep a maintenance log of fluid changes & parts replaced — frequent heavy-duty riding or wet use shortens fluid life.
Following this MotoSport-exclusive procedure will ensure you replace and bleed the brake fluid on your 2011 Yamaha Grizzly 550 4X4 safely and effectively. If you need model-specific parts or service kits, use the parts link above to find replacements compatible with your ride.
Related Shopping Categories
Shop Brake Fluid for a 2011 Yamaha Grizzly 550 4X4 ATV.
Shop Brake Bleeders for a 2011 Yamaha Grizzly 550 4X4 ATV.
Shop Brake Pads for a 2011 Yamaha Grizzly 550 4X4 ATV.
Shop Brake Lines for a 2011 Yamaha Grizzly 550 4X4 ATV.
Shop Brake Tools for a 2011 Yamaha Grizzly 550 4X4 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.
