How to Change Brake Pads on a 2014 Yamaha YZ85
Shop parts for a 2014 Yamaha YZ85 Dirt Bike.Quick overview of the brake system
The 2014 Yamaha YZ85 uses a hydraulic disc brake system common to modern dirt bikes. Key components you'll interact with:
- Brake lever (front) or pedal (rear) that actuates braking.
- Master cylinder that creates hydraulic pressure when you pull or press.
- Brake line carrying fluid to the caliper.
- Brake caliper that squeezes the pads.
- Brake pads & retaining hardware.
- Brake rotor (disc) mounted to the wheel.
Hydraulic pressure pushes the caliper pistons so the pads clamp the rotor to slow the bike. The YZ85 is a lightweight youth motocross machine, but the braking system behaves like larger motocross and trail bikes, so pad wear and maintenance are the same fundamentals.
When to replace pads – common symptoms
- Reduced braking power or longer stopping distances.
- Squealing, squeaking, or grinding noises when braking.
- Excessive lever or pedal travel before engagement.
- Pad material visibly thin – less than 1.5mm of friction material or the backing plate showing.
- Rotor heat discoloration or significant scoring from metal-on-metal contact.
Inspect pads frequently after muddy sessions, long motos, or if you notice any of the symptoms above. Prompt replacement keeps control and safety sharp on track or trail.
Tools & prep
- Basic hand tools: 10mm/12mm sockets or wrenches, pliers, flathead screwdriver.
- Clean rags, isopropyl alcohol or brake cleaner, and a small brush.
- New pads sized for a 2014 Yamaha YZ85 (verify fitment).
- Bike stand to keep the wheel off the ground; second person optional for stability.
Work in a clean, well-lit area. Avoid contaminating new pads with oil, grease, or brake fluid.
Step-by-step – changing the brake pads
This sequence assumes a typical single-front caliper and rear caliper layout on the YZ85; adjust slightly if your bike has different retaining hardware.
- Secure the bike: Put the YZ85 on a stand so the wheel can rotate freely and the bike is stable.
- Access the caliper: For many YZ85 setups you can service pads with the wheel in place. If the caliper blocks access, remove the wheel by loosening axle, spacers, and axle nuts, then slide the wheel out.
- Remove retaining pin/clip: Locate the pad retaining pin or spring clip. Use pliers or a screwdriver to remove the clip, then push or slide out the retaining pin. Keep small hardware organized.
- Slide old pads out: Pull the pads straight out of the caliper. Note pad orientation and any shims or shims with springs so you install new pads the same way.
- Inspect rotor & caliper: Check the rotor surface for grooves, heavy scoring, or discoloration. Look for brake fluid leaks or debris trapped in the caliper bores.
- Clean the caliper: Use a brush and brake cleaner or isopropyl alcohol to remove dirt, mud, and old pad dust. Wipe clean with a rag.
- Compress the piston(s): Before fitting new pads, push the caliper pistons back into the bore to make room. Use a flat screwdriver or piston tool with gentle, even pressure. If the pistons won't budge, open the master cylinder reservoir briefly and remove a small amount of fluid to prevent overflow, then try again.
- Install new pads: Position any shims or springs, then slide the new pads into the caliper the same way the old ones came out. Ensure contact faces the rotor and backing plates sit flush.
- Reinstall retaining hardware: Replace the retaining pin and secure clip or bolt. Torque any bolts to a snug fit; avoid over-tightening small pins.
- Reinstall wheel (if removed): Fit the wheel and spacers, slide the axle through, and torque axle nuts to spec for a tight, safe fit. Spin the wheel to ensure it clears the pads and rotor.
- Restore hydraulic pressure: Gently pump the brake lever or pedal several times until firm to reposition pads against the rotor and restore normal travel.
- Final check: Confirm lever/pedal firmness, no dragging when released, and that hardware is secure before any test ride.
Helpful inspection tips during the job
- Measure rotor thickness – while the YZ85 has a small rotor, deep grooves or runout indicate replacement or machining is needed.
- Watch for brake fluid stains or wetness around the caliper boots which can signal small leaks.
- Ensure the caliper slides freely on its mounting pins; sticky pins can cause uneven pad wear.
- Clean away mud and packed grit around the caliper bracket and pad pocket to prevent binding.
- Confirm retaining pins, clips & springs are seated correctly so pads cannot shift under load.
Bedding in new pads
New pads require a short bedding process so the pad surface mates to the rotor. Ride to an open area and perform 8–12 moderate stops from around 15–20 mph, allowing the brakes to cool briefly between runs. Avoid one hard stop immediately – progressive, controlled stops transfer even pad material to the rotor and build consistent bite.
Final notes
Changing brake pads on a 2014 Yamaha YZ85 is a straightforward maintenance task you can handle in a garage with basic tools. Regular inspections and prompt pad replacement restore braking performance and rider confidence, whether you race motocross, ride trails, or practice in the yard.
Related Shopping Categories
Shop Brake Pads for a 2014 Yamaha YZ85 Dirt Bike.
Shop Brake Rotors for a 2014 Yamaha YZ85 Dirt Bike.
Shop Brake Lines for a 2014 Yamaha YZ85 Dirt Bike.
Shop Brake Bleeders for a 2014 Yamaha YZ85 Dirt Bike.
Shop Brake Tools for a 2014 Yamaha YZ85 Dirt Bike.
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.
