Air Filter Cleaning & Replacement Guide for 2009 Suzuki RM85
Shop parts for a 2009 Suzuki RM85 Dirt Bike.
If you own a 2009 Suzuki RM85, keeping your air filter clean and properly oiled is key to maintaining engine performance and longevity. The RM85 is a high-revving, race-oriented youth motocrosser and its small displacement engine relies on clean airflow for maximum power. Neglecting the air filter can lead to loss of power, dirty air entering the engine, accelerated wear, and costly repairs.
Why Air Filter Maintenance is Critical for Your RM85
- Performance: A clean filter helps maintain optimal throttle response and power delivery, which is crucial for the RM85's 2-stroke engine.
- Engine Protection: Dirt and sand entering the engine can cause pre-mature piston, cylinder, and bearing wear. This is especially important for the RM85, which is often ridden in dusty track and trail conditions.
Tools & Supplies Needed
- Basic hand tools (socket and screwdriver)
- Non-flammable cleaning solvent or specialized air filter cleaner
- Foam filter oil
- Gloves and a tub (for washing)
- Paper towels and plastic bag (for drying)
- Grease (for sealing the rim of the filter)
Step-by-Step: Cleaning the RM85 Air Filter
- Remove the seat and air cleaner cap to access the air filter element. On the RM85, this involves taking out two screws; the filter should pop right off after removal.
- Carefully remove the air filter element. Be cautious not to let any dirt fall into the airbox.
- Inspect the filter for tears or damage. Replace if damaged for proper sealing.
- Wash the filter element in a pan filled with a non-flammable cleaning solvent or a dedicated air filter cleaner. Gently squeeze (do not wring or twist) to remove excess solvent and avoid cracking the foam.
- Dry the filter in a clean plastic bag or let it air dry. Speed up drying with gentle airflow, but never use direct heat.
- Oil the clean, dry filter. Pour foam filter oil into the plastic bag and knead it throughout the filter. The RM85 requires good coverage; ensure the filter is evenly coated but not excessively saturated.
- Squeeze excess filter oil from the element. Use paper towels if needed.
- Apply grease lightly around the rim of the filter to prevent dirty air bypassing the seal. This is a key step for RM85s ridden in sandy or muddy conditions.
- Clean the airbox with a paper towel. Check for any debris or dirt that could damage the engine.
- Reinstall the air filter, air cleaner cap, and seat. Make sure all bolts and screws are tightened securely.
Replacing the RM85 Air Filter
- Replacement is needed if the foam element is ripped, brittle, or not sealing. Always use a filter specifically for the 2009 Suzuki RM85 to ensure correct fit and performance.
- Consider adding an air filter screen or cover for extra protection against mud and sand in harsh conditions.
Model-Specific Tips for 2009 Suzuki RM85 Owners
- Check often: RM85s are usually ridden by younger or novice riders, often in extreme conditions, so inspect the air filter every ride in dusty environments.
- Foam care: Do not twist the foam element while cleaning – foam tears easily and will not seal properly.
- Oil choice: Use high-quality foam filter oil (such as MOTUL AIR FILTER OIL) for best protection.
- Filter rim: Always grease the filter rim to improve the seal. This is a specific step for the RM85's airbox design.
- Frequent cleaning: Track use or riding in a group requires more frequent maintenance due to increased dust and roost.
When to Replace Your Filter
- Every season – or more often if you ride in extreme conditions.
- If the foam has become hard, brittle, or does not spring back after being squeezed.
- If the filter is visibly torn or does not fit tightly in the airbox.
Final Thoughts
Caring for the air filter on your 2009 Suzuki RM85 is essential to protecting your engine and enjoying every ride. Cleaning or replacing your filter regularly is an easy job that pays off with better performance and longer engine life. Trust MotoSport for all your Suzuki RM85 air filter needs, and keep your ride running strong.
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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.
