How to Bleed & Replace Brake Fluid on a 2016 Kymco MXU 700i
Shop parts for a 2016 KYMCO MXU700i ATV.
This MotoSport guide walks you through safely flushing and replacing the brake fluid on a 2016 Kymco MXU 700i. Follow these steps carefully to restore firm brake lever and pedal feel, prevent corrosion, and maintain braking performance.
What you need
- DOT 4 brake fluid (confirm with your owner&s manual before purchase)
- Clear plastic tubing that fits over the caliper bleed nipples
- Brake fluid catch bottle or jar (marked for hazardous fluids)
- Wrenches for bleed nipple and caliper bolts (open/box end)
- Turkey baster or fluid syringe (optional) to remove old fluid from reservoir
- Clean rags, gloves, eye protection
- Brake cleaner and small brush for caliper area
- Zip-top bag and rubber band (to cap reservoir between steps)
- Torque wrench for reinstalling components to spec (use service manual values)
Owner notes specific to the 2016 Kymco MXU 700i
- The MXU 700i typically uses a two-circuit braking setup: handlebar master cylinder for front brakes and a foot pedal master cylinder for the rear. Bleed both circuits separately.
- There is no factory ABS on this model, so bleeding is straightforward but you must keep each reservoir and circuit isolated when servicing.
- Brake reservoirs are plastic and can be brittle with age; inspect for cracks, swollen seals, or leaky gaskets and replace the reservoir if damaged.
- Always use fresh DOT 4-grade fluid unless your owner&s manual specifies otherwise. Do not mix DOT 3 and DOT 5 fluids; DOT 5 is silicone-based and incompatible with DOT 3/4.
- Brake lines on this ATV are exposed to off-road debris. Inspect hoses for nicks, swelling, or brittle sections and replace if any damage is found.
Preparation
- Park on level ground and secure the ATV so it won&t roll. Remove the key and disconnect the battery negative terminal if you will be working near electrical components.
- Clean the master cylinder reservoir caps and surrounding area to prevent contamination from entering the system when opened.
- Remove brake reservoir caps and diaphragms. Use a turkey baster or syringe to remove most of the old fluid from each reservoir; do not reuse removed fluid.
- Inspect and clean bleed nipples and caliper bodies. Fit clear tubing onto each bleed nipple and submerge the other end in a jar partially filled with old fluid to prevent air being drawn back in.
Bleeding sequence
For best results, bleed the system starting with the caliper farthest from the reservoir and finishing with the nearest. On the MXU 700i this typically means:
- Front brakes: right front, left front, then master cylinder (if shared circuit or dual calipers).
- Rear brake (foot pedal): bleed the rear caliper(s) then the rear master cylinder reservoir.
Two-person pump-and-hold method (recommended)
- Have an assistant repeatedly pump the brake lever or pedal several times and hold it to build pressure.
- Open the farthest bleed nipple one-quarter to one-half turn to let fluid and air escape into the tubing/jar. Close the nipple before the assistant releases the lever/pedal to avoid sucking air back in.
- Repeat until fluid runs clear with no bubbles, then proceed to the next caliper in the sequence.
- Keep the reservoir top-up frequently so it never runs dry; running dry will introduce significant air and require more bleeding.
One-person vacuum or syringe method
- Attach a handheld vacuum pump or syringe setup to the bleed nipple tubing. Draw fluid until clear bubble-free fluid appears, then close the nipple and move on.
- Maintain reservoir fluid level throughout.
Replacing the brake fluid fully
- With each caliper bled to clear, drain the remaining reservoir fluid and refill with fresh DOT 4 fluid.
- Repeat the bleeding sequence to push fresh fluid through the lines until only new fluid exits each bleed nipple.
- Once clear fluid with no bubbles appears and brake lever/pedal feel is firm, tighten bleed nipples to snug (then to service manual torque if specified).
- Top off reservoirs to the proper level and reinstall diaphragms & caps. Clean any spilled brake fluid immediately; it damages paint and plastics.
Final checks
- Operate the brakes multiple times with the ATV stationary to confirm firm lever and pedal feel.
- Check for leaks at bleed nipples, hose fittings, and master cylinder. Re-torque any fittings per service manual.
- Inspect pad wear and rotor condition while calipers are off; replace pads or rotors if worn or damaged.
- Dispose of old brake fluid according to local hazardous-waste rules.
- Road-test slowly in a safe area to confirm braking performance before full-speed use.
Tips & troubleshooting
- If brakes feel spongy after bleeding, recheck for air by repeating the bleed sequence and ensure the reservoir never ran dry.
- Stubborn air can hide in the master cylinder. If repeated bleeding fails, consider bench-bleeding or replacing the master cylinder.
- Corrosion or collapsed rubber hoses often mimic air-in-system symptoms; replace suspect hoses.
- Keep spare bleed nipple crush washers or O-rings on hand to prevent leaks when resealing nipples.
Following this MotoSport procedure will ensure your 2016 Kymco MXU 700i has clean, properly bled brake fluid and reliable stopping power. If you&re unsure about any step, consult your service manual or contact a qualified technician.
Related Shopping Categories
Shop Brake Fluid for a 2016 KYMCO MXU700i ATV.
Shop Brake Bleeders for a 2016 KYMCO MXU700i ATV.
Shop Brake Pads for a 2016 KYMCO MXU700i ATV.
Shop Brake Lines for a 2016 KYMCO MXU700i ATV.
Shop Brake Tools for a 2016 KYMCO MXU700i 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.