Air Filter Cleaning & Replacement Guide for 2022 Suzuki RM85

Shop parts for a 2022 Suzuki RM85 Dirt Bike.

Maintaining a clean and properly oiled air filter is essential for peak performance and longevity of your 2022 Suzuki RM85. This guide from MotoSport.com covers step-by-step instructions unique to the RM85, addresses model-specific notes, and helps you get the most from your ride.

Why Air Filter Maintenance Matters on the 2022 RM85

  • Engine Protection: The RM85's two-stroke engine is sensitive to dust and debris–a dirty filter can allow contaminants in, leading to rapid wear.
  • Performance: A clogged or improperly oiled filter reduces power and throttle response, especially in MX or trail environments.

Tools & Supplies Needed

  • Socket wrench or appropriate tool for seat bolt
  • Non-flammable air filter cleaning solvent
  • Foam filter oil
  • Rubber gloves (recommended)
  • Lint-free towels or paper towels
  • Grease for sealing the filter rim

Step-by-Step Air Filter Removal

  1. Remove the seat by loosening and taking out the seat bolt.
  2. Take off the air cleaner cap located above the filter.
  3. Unscrew the wing nut holding the air filter in place.
  4. Pull out the air filter element with care to avoid shaking debris into the intake.

How to Clean the Air Filter

  1. Fill a cleaning tub with a non-flammable solvent specifically designed for foam filters.
  2. Gently submerge and wash the filter. Avoid twisting or wringing to prevent tears–instead, squeeze out the dirt and old oil.
  3. Rinse thoroughly and let dry completely. Drying in a clean plastic bag helps avoid contamination.

Oiling & Reinstalling the Air Filter

  1. Apply a high-quality foam filter oil evenly throughout the filter. Work the oil in until coverage is uniform–the RM85's engine relies on proper oiling for sealing against fine dust.
  2. Squeeze gently (no wringing) to remove excess oil. Too much oil can restrict airflow, too little reduces filtering capacity.
  3. Apply a thin layer of grease around the edge of the filter where it contacts the airbox for an optimal seal.
  4. Check the airbox. Clean any remaining dust, especially around the sealing surface.
  5. Reinstall the filter, secure the wing nut, replace the air cleaner cap, and reattach the seat. 

When to Replace the Air Filter

  • If the filter has any tears, hard spots, or permanent stains, replace it immediately. The RM85 can ingest dirt quickly when the element is compromised.
  • Keep a spare filter on hand for race weekends or especially dusty rides.

2022 RM85 Owner Tips

  • The RM85's compact airbox is prone to trapping mud and sand–inspect the screen and consider a pre-filter cover for extreme conditions.
  • Always check the seal around the filter rim. Even a small gap can allow debris into the carburetor and cylinder.

Consistency with filter maintenance is the key for the 2022 Suzuki RM85 to stay performing at its best, whether you’re battling at the track or enjoying the trails.

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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.