Air Filter Cleaning – Replacement Guide for 2017 Honda CRF150RB

Shop parts for a 2017 Honda CRF150RB Dirt Bike.

The 2017 Honda CRF150RB is a high-performance mini race bike built with precision Honda engineering. To keep the engine breathing efficiently and running clean, proper air filter maintenance is vital. Below is a comprehensive, MotoSport.com-exclusive guide created specifically for 2017 CRF150RB owners.

About the CRF150RB Air Filter System

Your 2017 CRF150RB uses a dual-stage foam air filter design, engineered to maximize airflow while capturing dirt, dust, and sand that could harm your engine. Aftermarket options such as the Twin Air filter use coarse outer foam for debris and fine inner foam for smaller particles, a reliable design trusted in competitive racing environments†1. This dual-layer construction is essential to maintain the high-revving performance the CRF150RB is famous for.

How Often Should You Clean or Replace the Filter?

  • Recreational riding: Inspect the filter every 3-5 hours of ride time.
  • Competition/Muddy conditions: Inspect after every ride, and clean or replace as needed.
  • Replacement should be done if filter material appears torn, excessively dirty, or damaged.

What You Need

  • Gloves
  • Clean rags or absorbent towels
  • Approved air filter cleaning solution
  • Air filter oil (foam-specific)
  • Plastic bag (for oiling)
  • Correct air filter for 2017 CRF150RB (check cage and fitmentthis model shares filters across 2007–2025, but always verify to avoid leaks)

CRF150RB Air Filter Removal Steps

  1. Ensure the bike is off and cool.
  2. Remove the seat by releasing the rear seat bolts (use an 8mm socket).
  3. Locate the airbox and carefully loosen the filter cage wingnut—keep track of all hardware.
  4. Gently pull out the filter and attached cage.

Cleaning and Oiling the Filter

  1. Lightly tap the filter to remove loose dirt.
  2. Soak the filter in the cleaning solution, gently massaging out old oil and grime. Do not twist or wring aggressively, as this can tear the foam.
  3. Rinse with cool water until clean. Let dry completely.
  4. Saturate the dried filter with foam filter oil. Knead the oil evenly throughout both layers. Place the filter in a plastic bag to minimize mess.
  5. Lightly squeeze out excess oil (the filter should be tacky, not dripping).

Reinstalling the Filter (Important Tips)

  • Inspect the filter cage and gasket for damage—replace if needed. The 2017 CRF150RB features a specific sealing edge designed to eliminate leaks at the airbox.
  • Ensure the filter is seated flat and evenly against the sealing surface to prevent dirt ingress.
  • Install the cage and filter into the airbox. Tighten the wingnut securely but avoid overtightening that could strip threads or deform the seal.
  • Reinstall the seat and hardware.

Special Notes for 2017 CRF150RB Owners

  • The filter cage and mounting hardware are unique to the CRF150RB model, and some aftermarket filters require transfer of OEM components. Always check that your replacement filter kit includes any necessary gaskets or adapters for this year/model†3.
  • This bike's high-RPM, small-displacement engine does not tolerate dirt ingestion—never run without an air filter and always keep the seal clean and oiled.
  • Twin-stage foam filters are standard for this bikepaper or gauze filters are not recommended due to reduced protection and sealing on CRF airboxes†2.

When to Replace vs. Clean

  • Replace the filter if any holes, rips, or hardened foam are present, or if the glue seams are deteriorating.
  • Clean for regular maintenance; a properly cared-for foam filter can last many rides.

Consistent air filter maintenance will keep your 2017 Honda CRF150RB delivering maximum throttle response and power on the track or trail—trust MotoSport.com for parts, cleaning supplies, and expert advice 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.