Air Filter Cleaning – Replacement Guide for 2010 Kawasaki KX85

Shop parts for a 2010 Kawasaki KX85 Dirt Bike.

Keeping your 2010 Kawasaki KX85 performing at its best requires routine air filter care. Dust, dirt, and debris can choke your engine and lead to expensive damage—especially on this high-revving two-stroke designed for the demands of youth motocross. MotoSport.com has you covered with this proprietary step-by-step guide tailored to your KX85, so you can ride longer and stronger.

How Often Should You Clean or Replace Your Air Filter?

  • After every dirty or dusty ride.
  • At minimum, after every 2-3 rides in moderate conditions.
  • Replace the filter if there are tears, excessive wear, or it cannot be fully cleaned.

Tools – Supplies Needed

  • 8mm socket or T-handle
  • Air filter cleaner (foam filter safe)
  • High-quality foam air filter oil
  • Disposable gloves
  • Clean, lint-free towels
  • Waterproof grease
  • Bucket or wash tub

Removing the Air Filter

  1. Remove the seat by unbolting the two rear seat bolts with your 8mm tool.
  2. Locate and unscrew the wing nut securing the air filter in place.
  3. Carefully pull the air filter out. Stuff a clean lint-free towel into the airbox opening to keep debris from entering the carburetor and engine.

Cleaning the Air Filter

  • Do not use gasoline or flammable solvents for cleaning—these are dangerous and can damage the foam.
  • Wash the foam filter with an air filter-specific cleaner or mild dish soap and warm water.
  • Rinse thoroughly until all dirt and cleaning agents are removed.
  • Gently squeeze (do not wring) the filter to remove excess water.
  • Let the filter dry completely out of direct sunlight.

Oiling – Reinstalling the Air Filter

  1. Once dry, saturate the filter completely with high-quality foam filter oil. Work the oil into all areas.
  2. Squeeze out any excess oil (use a clean towel if necessary).
  3. If desired, apply a thin layer of waterproof grease around the filter's sealing edge to prevent dust leakage (recommended for sandy or silty conditions).
  4. Remove the towel from the airbox opening. Double check there is no debris inside.
  5. Carefully reinstall the filter, aligning the center hole and tightening the wing nut until secure but not over-tightened.
  6. Reinstall the seat and bolts.

When to Replace the Air Filter

  • If you see tears, thinning, or the foam remains soiled after cleaning, replace the element immediately.

Specific Notes – 2010 Kawasaki KX85

  • Your KX85 has a straightforward air box design, making regular filter maintenance fast and accessible.
  • Always inspect the inside of the airbox when the filter is removed. Dirt inside the duct can indicate a poor filter seal—use waterproof grease if this is seen.
  • Never skip air filter care—even one ride with a dirty or damaged filter can cause cylinder scoring or premature piston wear on a KX85.
  • Make sure breather hoses routed near the airbox are not kinked or blocked, as this can affect engine performance and longevity.

For all your 2010 Kawasaki KX85 air filter parts, oils, and maintenance products, MotoSport.com supplies everything you need to keep your machine race-ready every time you head to the gate.

Related Shopping Categories

Shop Air Filters for a 2010 Kawasaki KX85 Dirt Bike.

Shop Air Filter Oil for a 2010 Kawasaki KX85 Dirt Bike.

Shop Air Box Covers for a 2010 Kawasaki KX85 Dirt Bike.

Shop Tools for a 2010 Kawasaki KX85 Dirt Bike.

Shop Intake Parts for a 2010 Kawasaki KX85 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.