Air Filter Cleaning – Replacement Guide for 2007 Suzuki RM85

Shop parts for a 2007 Suzuki RM85 Dirt Bike.

The air filter on your 2007 Suzuki RM85 plays a crucial role in protecting the high-revving two-stroke engine from dirt, dust, and debris. Routine maintenance will not only ensure peak performance but also help avoid costly engine repairs. This guide developed exclusively for MotoSport owners covers essential steps and insider tips specific to the 2007 RM85.

Why Air Filter Maintenance Is Critical on the RM85

  • Designed for high RPMs – The RM85's engine intakes large volumes of air at high speeds, making a clean, well-oiled filter essential for instant throttle response.
  • Off-road conditions – Even a short ride in dusty or sandy terrain can quickly clog the filter, exposing the engine to premature wear.

How to Access and Remove the Air Filter

  1. Remove the seat by loosening the bolts underneath the rear fender.
  2. Take off the air cleaner cap to access the filter element.
  3. Gently unscrew the filter wing nut. Carefully slide the filter and cage assembly out of the airbox. Take care not to let dirt fall into the intake tract.

Cleaning Your Air Filter

  1. Fill a pan with a non-flammable cleaning solvent or a commercial air filter cleaner. Fully immerse the filter element and agitate gently to remove dirt.
  2. Do not twist or wring the foam – Instead, squeeze the element to remove solvent. Twisting can cause cracks or tears in the filter element, a common issue seen on older RM85 filters, leading to loss of engine protection.
  3. Let the filter dry completely, ideally in a well-ventilated area.

Oiling – Critical Step for Foam Filters

  1. Pour air filter oil over the dried element. Foam filters require thorough saturation with quality filter oil, such as MOTUL AIR FILTER OIL or a MotoSport-recommended equivalent.
  2. Work the oil evenly throughout the foam by hand. Every pore must be oiled but not dripping—excess oil can restrict airflow, too little risks engine damage.
  3. Pro Tip: Place the oiled filter in a clean plastic bag and knead thoroughly to ensure even distribution.

Inspect – Replace if Needed

  • Check for cracks, tears, or hardened areas in the foam. Inspect the cage and screen for straightness and integrity.
  • If the filter appears excessively dirty, damaged, or degraded, replace it immediately. Filters are inexpensive compared to engine repairs.

Install and Seal the Filter

  1. Before installation, apply a bead of waterproof grease around the filter's sealing edge and the airbox lip. This step prevents fine dust from bypassing the filter—especially important for the RM85's airbox design, which can allow dust ingress if not sealed correctly.
  2. Carefully insert the filter and cage assembly, ensuring the fixing bolt and bracket align properly.
  3. Tighten the wing nut by hand until snug. Avoid overtightening, which can deform the filter or cage.
  4. Reinstall the air cleaner cap and seat.

Owner Tips Specific to the 2007 Suzuki RM85

  • The original filter cage and airbox shape require precise alignment. Always double-check for even sealing before reinstalling the seat.
  • Muddy or sandy rides may require air filter servicing after every ride—the RM85 is susceptible to filter clogging in these conditions. Consider using an air filter screen or cover for extra protection.
  • Stock filter elements from 2007 may now be brittle—inspect foam for degradation annually, or upgrade as needed.

Routine and proper air filter maintenance is essential for the longevity and performance of your 2007 Suzuki RM85. Rely on MotoSport for all your air filter, oil, and replacement part needs so your bike remains ready for every 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.