Air Filter Cleaning – Replacement Guide for 2019 Yamaha TTR125L
Shop parts for a 2019 Yamaha TTR125L Dirt Bike.
Maintaining the air filter of your 2019 Yamaha TTR125L is essential for peak engine performance and longevity. This guide is designed specifically for MotoSport customers who ride the TTR125L, offering step-by-step instructions tailored to your model—whether you are cleaning, inspecting, or replacing the filter entirely.
Important Model-Specific Notes
- The 2019 TTR125L uses a dual-stage foam air filter, designed to trap coarse and fine particles for optimized engine protection and airflow.
- Always use high-quality foam air filter oil, such as Yamalube or a synthetic formula, for best results. Proper oiling improves filtration and engine efficiency.
- Check for tears, rips, and signs of heavy wear. Any compromised foam should be replaced immediately to prevent engine damage.
- This model shares fitment with filters from previous years–OEM part number Yamaha 5HP-14450-00-00 is compatible with TTR125L models from 2000–2026, making replacements easy.
Air Filter Cleaning Guide
- Remove the seat & air box cover: Unscrew and set aside for easy access to the air filter.
- Take out the foam filter: Gently remove the filter from the air box. Avoid rough handling to prevent tearing the foam or accidentally dropping debris into the intake.
- Initial inspection: Look for damage: holes, worn spots, or loose seams. If found, discard and replace the filter.
- Pre-clean: Tap out or gently brush off loose dirt and debris.
- Wash the filter: Rinse in warm, soapy water (mild detergent recommended) until oil and dirt are gone. Never use gas or harsh chemicals as they can degrade the foam and seams.
- Rinse thoroughly: Use clean water to ensure all soap and contaminants are removed.
- Dry naturally: Squeeze (do not wring) excess water out, then let air dry at room temperature or in warm sunlight. Never use heat guns or dryers.
- Final inspection: Before oiling, confirm the filter is dry and undamaged.
How to Oil & Reinstall the Air Filter
- Apply foam air filter oil: Coat the foam evenly, working it gently through the filter for full coverage. The oil should be tacky/sticky.
- Reinstall the filter: Fit the oiled filter snugly into the air box, ensuring a tight seal for maximum dirt protection.
- Replace the air box cover & seat: Secure all fasteners and double-check fitment.
When to Clean or Replace Your Air Filter
- Regular Riding: Inspect and clean the air filter every 10 hours or after every major ride in dusty conditions.
- Replacement: Change the filter after every 4–6 cleanings, or immediately if you observe any damage, loss of shape, or excessive wear.
Disposal – Environmental Care
- Always dispose of solvents and old filter materials responsibly and in accordance with local environmental regulations.
MotoSport.com Pro Tips for 2019 TTR125L Owners
- The TTR125L—with its broad compatibility from 2000–2026 filters—makes upgrades and replacements both affordable and straightforward.
- Using top-quality filters and oils preserves your TTR's reliability and smooth power no matter the terrain.
- If the bike bogs or loses power after cleaning or replacing the filter, double-check air box installation and filter oiling. Poor sealing or oil application can affect jetting and performance.
Keep your 2019 Yamaha TTR125L running strong with routine air filter care and genuine parts from MotoSport.
Related Shopping Categories
Shop Air Filters for a 2019 Yamaha TTR125L Dirt Bike.
Shop Air Filter Oil for a 2019 Yamaha TTR125L Dirt Bike.
Shop Air Box Covers for a 2019 Yamaha TTR125L Dirt Bike.
Shop Tools for a 2019 Yamaha TTR125L Dirt Bike.
Shop Intake Parts for a 2019 Yamaha TTR125L 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.
