Air Filter Cleaning – Replacement Guide for 2014 Yamaha YZ85
Shop parts for a 2014 Yamaha YZ85 Dirt Bike.
The 2014 Yamaha YZ85 is known for its high RPM two-stroke engine, and keeping its air filter clean and well-maintained is essential for performance and longevity. Routine air filter service not only ensures uninterrupted airflow for maximum power, but also effectively protects your engine from damaging dust and debris. Here’s a comprehensive MotoSport guide, tailored for YZ85 owners, with step-by-step instructions for air filter cleaning and replacement.
Why Proper Air Filter Maintenance Matters
- Two-stage foam air filters are standard on the YZ85—engineered to catch a broad range of dust and dirt before they enter your engine. This design features coarse outer foam to trap larger particles and a fine inner foam layer for superior filtration of smaller debris, which prevents premature engine wear and helps maintain the bike's peak performance.
- A clogged or dirty filter restricts airflow, resulting in power loss and increased engine wear.
What’s Unique About the 2014 YZ85 Air Filter?
- The YZ85 filter uses dual-layer, multi-density foam specifically designed for harsh motocross conditions. Foam filters require regular servicing and proper oiling to maximize their lifespan and filtering efficiency.
- The airbox on this model is compact—make sure the sealing ring on your filter is seated flush to prevent unfiltered air bypass.
Tools & Supplies You’ll Need
- Socket wrench or T-handle (to remove seat and side panel)
- Clean gloves
- A bucket for washing
- Foam air filter cleaner or a mild detergent
- Foam air filter oil (never use engine oil or non-foam filter oils)
- Lint-free towels or paper towels
How to Remove the Air Filter
- Remove the seat by loosening the rear seat bolt.
- Access the airbox. Carefully unscrew the filter's wingnut and lift the filter and cage out of the airbox.
- Inspect the airbox for excess dirt. Carefully wipe it out before reinstalling the filter.
Cleaning the Air Filter
- Gently separate the foam filter from its cage.
- Submerge it in warm water with foam filter cleaner or mild detergent. Squeeze (do not wring or twist.) repeatedly until the dirt and old oil are removed.
- Rinse thoroughly with clean water. Repeat until water runs clear.
- Allow the filter to air dry completely away from direct heat or sunlight to avoid damaging the foam structure.
Oiling and Reinstalling the Filter
- Once dry, apply high-quality foam filter oil evenly, working it into all areas. Every bit of foam should be colored with oil; don’t over-saturate.
- Reinstall the filter onto the filter cage and check that the sealing ring is fully engaged.
- Align the filter properly in the airbox, then hand-tighten the wingnut firmly but don't overtighten. Double-check that the filter fits snugly around the airbox opening with no gaps.
- Reinstall the seat securely.
Replacement: When to Change the Air Filter
- Replace your air filter if it has holes, tears, or degraded foam, or if repeated cleanings do not restore its original form.
- A spare, freshly-oiled filter is invaluable during dusty riding or long rides—swap it out as soon as performance drops.
Pro Tips for YZ85 Owners
- Keep an extra filter oiled and in a resealable bag for quick swaps at the track.
- Foam-specific filter oil makes a significant difference in both protection and filter lifespan.
- Always inspect your filter's sealing ring and filter cage before reinstallation.
- Regular filter service helps maintain the crisp throttle response and high-rev performance that sets the YZ85 apart from its class.
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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.