Air Filter Cleaning & Replacement Guide for 2013 Kawasaki KX85
Shop parts for a 2013 Kawasaki KX85 Dirt Bike.
Maintaining the air filter on your 2013 Kawasaki KX85 is critical for both performance and engine longevity. The KX85 uses a foam air filter that relies on a sticky oil to trap dirt–a simple yet effective system that, if neglected, may allow debris into your engine, leading to costly repairs and diminished performance.
Why Air Filter Maintenance Matters
- Performance: Clean airflow is essential for maximum power and throttle response.
- Longevity: Trapped dirt protects the cylinder, piston, and crankshaft from premature wear.
- Reliability: Prevents engine failures caused by dirt ingestion.
Tools & Supplies You'll Need
- 8mm socket or wrench
- Clean rags
- Air filter cleaner or mild detergent (dish soap works)
- Foam air filter oil
- Waterproof grease (optional for sealing edge)
- Disposable gloves
How to Remove & Inspect the Air Filter
- Locate the seat bolts–there are two, requiring an 8mm socket.
- Remove the bolts and lift off the seat.
- Loosen and remove the wing nut securing the air filter to the airbox.
- Carefully pull out the filter. Take care not to drop debris into the intake.
- Inspect the area around the airbox; wipe away loose dirt before proceeding.
Regular inspection avoids sucking dirt into the motor, especially after a dusty ride.
Cleaning Instructions
- Dry Pre-Clean: Gently tap or brush off loose dirt from the filter.
- Wash: Submerge the filter in warm water mixed with a mild detergent. Squeeze (do not wring) the filter to flush out debris and old oil. Repeat if needed.
- Rinse: Rinse with clean water until no soap remains.
- Dry: Allow to air dry completely. Avoid forced drying; do not use compressed air as it can damage the foam.
- Inspect: Check for tears, brittleness, or glue breakdown. If the foam crumbles or the glue fails, replace the filter.
Oiling & Reinstallation
- Apply foam-specific air filter oil evenly. Work the oil throughout the filter so all of the surface is sticky to the touch.
- Optionally, apply a thin bead of waterproof grease to the filter's sealing edge for extra protection, though some riders choose not to.
- Reinstall the filter, ensuring proper alignment with the central bolt and airbox guide.
- Tighten the wing nut securely, but avoid overtightening.
- Replace the seat and secure both bolts.
Replacement Guide
- If the foam is damaged or the filter glue is failing, immediately replace the filter.
- Filters can typically be washed and reused around 10 times before replacement.
- Running a pre-oiled filter is an option for easy swaps during events or multi-day rides.
2013 Kawasaki KX85 Owner's Notes
- This model's airbox is relatively accessible, making routine maintenance straightforward.
- Always double-check the fit of the air filter – improper installation can lead to engine damage.
- Inspect the intake area for debris after each ride, especially in muddy or sandy terrain.
- Keeping a spare, pre-oiled filter on hand minimizes downtime and protects your engine.
Proprietary MotoSport Tip
Routine filter cleaning every 1-2 rides, more often in dusty conditions, ensures your KX85 runs at peak performance and you avoid expensive engine repairs. Always use foam-specific oil and never substitute with generic engine oil or dry filters. Only original or high-quality aftermarket filters designed for the KX85 are recommended for best results.
Related Shopping Categories
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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.