Air Filter Cleaning – Replacement Guide for 2013 Yamaha YZ85
Shop parts for a 2013 Yamaha YZ85 Dirt Bike.
Maintaining the air filter on your 2013 Yamaha YZ85 is vital for consistent performance and engine longevity. The YZ85 is renowned for its high-revving two-stroke power–perfect for younger riders and mini-class racing, yet demanding in terms of air filtration. This MotoSport guide details cleaning and replacement procedures unique to your YZ85 to help you keep your machine ready for the next moto.
When to Clean or Replace Your Air Filter
- Follow the intervals in your owner’s manual. Aggressive riding and dusty conditions may require more frequent cleaning or replacement.
- Inspect after every ride–if the filter appears dirty, oily, or damaged, take action.
Required Tools & Supplies
- Socket wrench (to remove seat and side panels)
- Nitrite gloves (recommended for handling filter oils and dirt)
- Foam air filter cleaner
- Filter-specific oil
- Clean bucket for washing
- Genuine Yamaha replacement air filter element (if needed)
Step-by-Step: How to Clean the Air Filter
- Remove the seat and side number plate using a socket wrench.
- Locate the wingnut securing the air filter–unscrew and carefully remove the filter element.
- Take apart the foam from the plastic cage.
- Immerse the filter in the air filter cleaner inside a clean bucket. Gently squeeze (do not twist) to dislodge dirt and contaminants.
- Rinse with warm water and squeeze until all cleaner is out.
- Let the filter air-dry fully in a clean environment.
- Once dry, apply Yamaha-recommended foam filter oil evenly throughout the element. Massage for full coverage without twisting.
- Apply lithium soap-based grease to the sealing surface for a proper airtight fit.
- Reinstall the filter on the cage, secure with the wingnut, and replace seat and panels.
When to Replace
- If the foam shows tears, excessive wear, or damage, replace with a genuine Yamaha element.
- Inspect the seal and cage for cracks or looseness–replace if compromised.
YZ85-Specific Notes
- The 2013 YZ85 design uses a foam element secured by a wingnut behind the side number plate and seat–easy access but requires careful re-sealing after cleaning.
- High-revving engine performance depends particularly on unrestricted airflow–never operate with a saturated, torn, or improperly installed filter.
- After reinstallation, double-check filter seating and airbox cleanliness to prevent dust bypass,–a common risk on this model after aggressive riding.
- Keep pre-operation checks of chassis fasteners, cables, and exhaust tightness in your regular maintenance routine for best results.
Expert MotoSport Tips
- Always keep a spare YZ85 air filter element ready for race day rotation.
- Consider upgrading to a high-performance dual-layer foam filter for increased filtration and airflow, especially in sand or extreme dust.
- Stay clear of aerosol oils–use only Yamaha-approved oil for the most effective coverage.
Related Shopping Categories
Shop Air Filters for a 2013 Yamaha YZ85 Dirt Bike.
Shop Air Filter Oil for a 2013 Yamaha YZ85 Dirt Bike.
Shop Air Box Covers for a 2013 Yamaha YZ85 Dirt Bike.
Shop Tools for a 2013 Yamaha YZ85 Dirt Bike.
Shop Intake Parts for a 2013 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.
