Air Filter Cleaning – Replacement Guide for 2018 Honda CRF110F

Shop parts for a 2018 Honda CRF110F Dirt Bike.

The air filter on your 2018 Honda CRF110F is essential for maintaining engine performance & longevity. Regular cleaning and timely replacement are key to preventing dirt & contaminants from damaging your engine, especially given the CRF110F's popularity as both a play bike & a training bike for all skill levels.

Unique CRF110F Air Filter Features

  • Dual-layer foam: Most aftermarket filters for this model use two layers of foam to catch both large debris & fine particles, maximizing engine protection while ensuring optimal airflow for power—flow bench tests confirm these filters outperform traditional designs.
  • Carbureted intake: Your 2018 CRF110F uses a carbureted intake, which means the air filter is especially critical for preventing dust and dirt from clogging jets and causing poor throttle response.
  • Easy maintenance design: The CRF110F's airbox is engineered for straightforward access, making filter removal & installation trouble-free for riders of all ages.

Step-by-Step Cleaning Guide

  1. Remove the seat by loosening the bolts with a socket wrench. Lift the seat to access the airbox.
  2. Open the airbox cover and carefully remove the air filter. Take note of the orientation for reinstallation.
  3. Inspect the filter. If it's torn or excessively dirty, replace it with a new dual-layer foam filter compatible with the 2018 CRF110F.
  4. If reusing, tap the filter gently to dislodge loose dirt. Avoid using compressed air, as it can damage the foam.
  5. Wash the filter in a dedicated cleaning solution or mild soap & warm water. Rinse thoroughly until water runs clear.
  6. Squeeze out water gently (do not twist or wring, which can tear the foam). Let it air-dry completely—never install a wet filter.
  7. Apply high-quality filter oil evenly to the foam. Make sure all surfaces are lightly and evenly coated, but do not oversaturate.
  8. Clean the airbox with a damp cloth, ensuring no residual dirt remains.
  9. Reinstall the filter, ensuring a snug seal. Replace the airbox cover and seat securely.

When to Replace Your Air Filter

  • Visual damage or tears anywhere on the foam
  • Loss of foam structure—if the filter no longer springs back when squeezed
  • Persistent clogging or reduced power after cleaning
  • After heavy rides in dusty or sandy conditions

Replacement foam filters designed for the 2018 CRF110F offer improved airflow and modern dual-layer technology, ensuring the best performance and protection.

Additional Model-Specific Tips

  • Never run your CRF110F without a properly oiled air filter—even short rides without filtration can severely damage the engine.
  • If upgrading performance parts such as carb or exhaust, ensure your airflow matches the need by selecting compatible high-flow filters.
  • For best results, inspect your filter after every 2–3 rides or more frequently in dusty environments.

The 2018 Honda CRF110F's reputation for reliability starts with good air filter maintenance. Follow these MotoSport-exclusive steps to keep your bike running at its best, season after season.

Related Shopping Categories

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Shop Intake Parts for a 2018 Honda CRF110F 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.