Air Filter Cleaning & Replacement Guide for 2006 Suzuki RM85

Shop parts for a 2006 Suzuki RM85 Dirt Bike.

The Suzuki RM85 is a high-revving two-stroke mini motocrosser renowned for its responsiveness and lightweight build. Keeping its air filter clean and properly oiled is essential for engine performance – and for long-term reliability. This MotoSport step-by-step guide is tailored to your 2006 RM85, highlighting key details unique to this model and best practices for effective maintenance.

How Often Should You Service the Air Filter?

  • Clean after every ride in dusty or sandy conditions.
  • At minimum, check after every 2-3 rides in normal conditions.
  • Always inspect before replacement – a torn or deteriorated filter must be replaced immediately.

Tools & Supplies Needed

  • 8mm socket or T-handle
  • Air filter oil formulated for foam filters
  • Grease (for sealing the rim)
  • Non-flammable filter cleaner or a mild soap solution
  • Clean rags
  • Disposable gloves
  • Plastic bag (for oiling the filter)

Removal – 2006 RM85 Air Filter

  1. Remove the seat by loosening the rear seat bolt with an 8mm socket.
  2. Unclip or unscrew the airbox lid (air cleaner cap).
  3. Remove the wing nut holding the air filter in place. The RM85 uses a wing nut for tool-less filter removal, providing easy access.
  4. Carefully lift out the air filter with the attached filter cage. Avoid letting any dirt fall into the air boot.

Inspection

  • Check the air filter for tears, holes, or breakdown in the foam – replace if damaged.
  • Inspect the filter cage and airbox for dirt and debris. Wipe out the airbox using a clean, damp rag.

Cleaning the Air Filter

  1. Fill a pan with non-flammable cleaning solvent or warm soapy water. Submerge and gently squeeze (do not twist or wring) to wash out dirt.
  2. Repeat as necessary until the filter is clean. Rinse thoroughly and gently squeeze out excess water.
  3. Allow the filter to dry completely. Avoid direct sunlight or heat sources.

Oiling & Reinstalling the Air Filter

  1. Pour quality foam filter oil evenly over the filter or place the filter and oil in a plastic bag and massage thoroughly to ensure full coverage.
  2. Squeeze to remove any excess oil. The filter should be tacky, not dripping.
  3. Apply a bead of waterproof grease to the outer sealing edge of the filter for additional dirt protection – this is especially important on the RM85, as its airbox design is particularly susceptible to dust entry during aggressive riding.
  4. Reinstall the filter and cage, aligning the mounting holes properly. Secure with the wing nut – do not overtighten.
  5. Reattach the airbox cap and seat securely.

Replacement Tips & Model-Specific Notes

  • The 2006 RM85 uses a standard foam filter mounted on a plastic cage. High-quality aftermarket filters are available and can improve filtration efficiency.
  • Inspect the intake boot for cracks or loose clamps, as any leaks here can cause dirt ingestion – a common issue with neglected RM85s.
  • When riding in especially wet or dusty tracks, a filter skin or pre-filter cover can help extend filter service intervals.
  • Never start or run the engine without a properly installed and oiled air filter.

Final Check

  • After installation, ensure the air filter is fully seated and the airbox is free of tools and rags.
  • Check your work before every race or practice session.

MotoSport has everything you need to keep your 2006 Suzuki RM85 running strong – with expert support and a wide selection of OEM and aftermarket air filters. Clean, oil, and replace regularly for maximum engine health and performance ride after ride.

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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.