Air Filter Cleaning & Replacement Guide for 2020 Kawasaki KX85
Shop parts for a 2020 Kawasaki KX85 Dirt Bike.
The 2020 Kawasaki KX85 is renowned for its potent two-stroke engine, aggressive build, and competitive-ready features. To maintain peak performance and longevity – especially in dusty, off-road conditions – regular air filter maintenance is critical for this model. Below, MotoSport.com presents a proprietary step-by-step guide unique to the KX85, tailored for those who want optimal engine protection and performance.
Why Air Filter Care Matters For Your KX85
The KX85 utilizes an oiled foam air filter. This design is highly effective at trapping dirt, but demands routine cleaning and timely replacement to prevent debris from entering the engine. Neglecting filter maintenance can lead to reduced horsepower, premature engine wear, and costly repairs.
Supplies You Need
- Fresh cleaning solvent
- Warm soapy water
- Air filter-specific oil
- Latex or nitrile gloves
- Clean rags
- Vacuum (optional for cleaning airbox)
- Waterproof grease (optional for rim sealing)
Removal Process For KX85 Air Filter
- Remove the seat using an 8mm socket for the two seat bolts – keep bolts in a safe place for reinstallation.
- Locate the wing nut securing the air filter to the airbox. Unscrew the wing nut to free the filter.
- Carefully lift out the filter, ensuring loose dirt does not fall into the air boot.
Tip: Place a cover over the intake while you work to avoid debris entering the engine.
Cleaning Procedure
- Inspect the filter for tears, brittle foam, or deteriorated glue. If severely damaged, replace it immediately – do not attempt to clean and reuse compromised filters.
- If reusable, immerse the filter in cleaning solvent to remove old oil and grime.
Note: Avoid harsh solvents that may degrade the glue or foam structure. - After soaking, wash thoroughly in warm soapy water to lift oil and debris from the foam's cells.
- Rinse until water runs clear. Squeeze, but do not wring, to avoid tearing the foam.
- Allow to air dry completely.
Do not use heat sources; high temps can damage the foam.
Oiling & Reinstallation
- Saturate the clean, dry filter with air filter oil. Work oil into the foam evenly, ensuring all areas are covered, especially the outer layer.
Tip: A well-oiled filter is key to trapping dirt — don't skimp on oil, but avoid pooling excess oil inside the airbox. - Optionally, apply a thin layer of waterproof grease around the filter rim where it contacts the airbox for extra sealing, though many owners find careful oiling sufficient.
- Fit the filter onto its mount, ensure the plastic center piece aligns with the filter's hole so the wing nut can thread through easily.
- Tighten the wing nut securely, but do not overtighten as this may deform the filter and reduce its effectiveness.
- Reinstall the seat and fasten the bolts.
Replacement Tips for the KX85 Owner
- While the foam filter can be cleaned up to 10 cycles, check for brittleness – frequent exposure to solvent and heat will break down the foam sooner on this model.
- Always inspect sealing surfaces and check that the filter-mounting area is spotless before reinstallation.
- Kawasaki KX85 air filters are readily available pre-oiled for convenience.
- Track riders or those in severe dust should consider changing filters every ride for maximal engine protection.
Key Notes About the 2020 KX85
- The KX85 runs a high-revving 2-stroke engine – it's especially susceptible to fine dust, so filter maintenance intervals should be shorter than on 4-stroke models.
- Preserve the strong mid-range power by keeping the intake path spotless – filter neglect can impact throttle response and overall ride feel.
- This year's model uses standard mounting hardware, so you won't need special tools for basic air filter service.
Regular air filter cleaning and correct replacement practices are essential to keep your 2020 Kawasaki KX85 running strong. With MotoSport.com's expertise, you ensure your dirt bike is always ready for championship-level performance.
Related Shopping Categories
Shop Air Filters for a 2020 Kawasaki KX85 Dirt Bike.
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Shop Tools for a 2020 Kawasaki KX85 Dirt Bike.
Shop Intake Parts for a 2020 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.
