Air Filter Cleaning – Replacement Guide for 2017 GAS GAS EC300R

Shop parts for a 2017 GAS GAS EC300R Dirt Bike.

Maintaining a clean air filter is crucial for the performance and engine longevity of your 2017 GAS GAS EC300R. This guide from MotoSport is tailored for your EC300R to ensure peak off-road reliability, optimized airflow, and protection against dirt and debris during any ride.

Why Air Filter Maintenance Matters for the EC300R

  • The 2017 GAS GAS EC300R uses a high-flow, dual-stage polyurethane foam air filter engineered for both maximum dust filtration and airflow efficiency, supporting the bike's 2-stroke engine performance.
  • Regular cleaning and timely replacement help prevent dirt ingestion that can cause engine damage or premature wear, especially important for the EC300R's crisp throttle response and powerband.

Required Tools & Supplies

  • Clean, lint-free gloves
  • Dedicated air filter cleaning bucket
  • Air filter cleaner/degreaser (foam filter safe)
  • Fresh air filter oil formulated for foam filters
  • Spare air filter and clean airbox wipes
  • Screwdriver or 8mm T-handle (to remove seat)

Step-by-Step Cleaning Instructions

  1. Remove the Seat:
    Use an 8mm T-handle or screwdriver to remove the seat bolts. Lift the seat to access the filter housing under the subframe.
  2. Take Out the Air Filter:
    The EC300R air filter cage features a quick-release design. Carefully release the filter from its cage, noting the precise orientation for correct reinstallation.
  3. Inspect the Air Filter:
    Check for tears, hardening foam, or separation. Replace if the filter is damaged or excessively clogged.
  4. Clean the Airbox:
    Use a damp, clean cloth to remove any residual dirt from the airbox, preventing contamination when refitting the filter.
  5. Wash the Filter:
    Place the foam filter in a cleaning bucket. Gently massage air filter cleaner through the foam to break down grime and old oil. Never use gasoline or harsh chemicals, as these degrade the foam structure.
  6. Rinse & Dry:
    Rinse thoroughly with warm (not hot) water. Gently squeeze (do not wring out) excess water and allow the filter to dry completely in a well-ventilated area, away from direct sunlight or heat sources.
  7. Oil the Filter Evenly:
    Apply foam filter oil evenly around the filter and massage it through. The entire filter should have a uniform, tacky feel but not be dripping with oil.
  8. Reinstall the Filter on Its Cage:
    Confirm the filter is seated securely on the cage, with no gaps along the sealing edge.
  9. Fit the Filter & Reattach the Seat:
    Position the filter/cage assembly back into the airbox. Ensure the sealing lip covers the entire perimeter, then secure the seat back onto the subframe.
  10. Start & Check:
    Start your EC300R and listen for proper engine response. A properly serviced filter helps maximize throttle, protect your engine, and maintain optimal fuel delivery.

Air Filter Replacement Intervals – EC300R Model Notes

  • Inspect and clean the filter after every ride when riding in dusty or muddy environments. For standard trail use, service at least every 3-4 rides.
  • Replace the air filter when there are signs of damage, foam deterioration, or persistent clogging after cleaning.
  • The 2017 EC300R accommodates a variety of aftermarket and OEM filters designed for 2007–2017 models. Always ensure the replacement filter is flame retardant and sized for the 2017 EC300R's unique airbox configuration.
  • Failure to maintain or correctly install the filter can quickly lead to piston, ring, or cylinder wear in the EC300R's high-output 2-stroke engine.

Model-Specific Tips for the 2017 GAS GAS EC300R

  • The airbox geometry of the 2017 EC300R allows for a tool-free quick-change process, making filter swaps trail-friendly.
  • Periodically inspect the air filter cage for warping or rivet wear, which can cause poor filter sealing specific to this model and year range.
  • Be sure to check the airboot between the filter and carburetor for cracks or looseness, a known maintenance point for this chassis.

Trust MotoSport to keep your 2017 GAS GAS EC300R running clean & performing at its peak every ride. Proper air filter maintenance means maximum power, longer engine life, and reliability on any track or trail.

Related Shopping Categories

Shop Air Filters for a 2017 GAS GAS EC300R Dirt Bike.

Shop Air Filter Oil for a 2017 GAS GAS EC300R Dirt Bike.

Shop Air Box Covers for a 2017 GAS GAS EC300R Dirt Bike.

Shop Tools for a 2017 GAS GAS EC300R Dirt Bike.

Shop Intake Parts for a 2017 GAS GAS EC300R 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.