Air Filter Cleaning & Replacement Guide for 2021 Yamaha PW50
Shop parts for a 2021 Yamaha PW50 Dirt Bike.
Regular air filter maintenance is essential for the longevity and performance of your 2021 Yamaha PW50. The PW50 uses a simple foam air filter that keeps debris out of the engine, making cleaning and replacement straightforward for any owner.
Tools & Supplies Needed
- Number three Phillips screwdriver
- Clean rag
- Contact cleaner or mild soapy water
- Air filter oil (if reusing a foam filter)
- Replacement air filter (if damaged)
Step-by-Step Cleaning & Replacement Instructions
-
Locate the Air Filter:
The air filter is situated in front of the left rear shock. Access the filter by removing the seat, which is fastened with two 10mm or 12mm bolts at the rear. Pull the seat off as a single piece to expose the air filter box. -
Remove Air Filter Cover:
Use the Phillips screwdriver to remove the center screw that holds the air filter cover. You may need to press down on the kickstarter to access the screw easily. -
Extract the Air Filter Element:
Once the cover is off, pull the foam air filter out carefully. Check for excess dirt – if present, meticulously wipe out the air box with a clean rag and contact cleaner. Inspect the air box for cracks or other damage. -
Inspect the Filter:
Thoroughly examine the foam filter for tears, crumbling, or deterioration. If the foam is coming apart or visibly worn, replace it immediately. -
Cleaning the Filter (if reusable):
Soak the foam element in a cleaning tub with mild soapy water or approved cleaner for about 10–15 minutes. Gently work the cleaner through the foam, rinse with clean water, then let it fully dry. Avoid using gasoline for cleaning, as it can harden the rubber parts and deteriorate the foam. -
Oiling the Filter:
If you are reusing the filter, apply air filter oil evenly once the foam is dry. Massage the oil into the foam to ensure complete coverage, but do not oversaturate. -
Reinstall the Air Filter:
Place the cleaned or new filter back into the box, ensuring it seats correctly. Replace the cover and secure it with the screw. Reinstall the seat onto the frame.
Model-Specific Notes for PW50 Owners
- The PW50 features a very basic air box and foam filter setup. There are no rubber seals in the filter channel; the foam sits directly in the plastic housing, sealing by tension. Ensure the foam element fits snugly and is not pinched or misaligned during reinstallation.
- The PW50's air box can attract more debris due to its exposed position, especially in muddy or dusty conditions – inspect more frequently if riding in these environments.
- The 2021 PW50 remains compatible with most previous-year air filters due to Yamaha's consistent design, allowing for easy replacement with MotoSport's extensive parts selection.
- Always check the air box for cracks or warping if excessive dirt is found inside, as this could compromise engine protection.
Maintenance Tips
- Clean or replace your PW50's air filter every 5–10 riding hours or after any ride in very dusty conditions.
- Never run the bike without the air filter installed to prevent engine damage.
- Regular air filter maintenance is crucial for beginner riders, as engine longevity can affect learning and reliability for young riders.
Related Shopping Categories
Shop Air Filters for a 2021 Yamaha PW50 Dirt Bike.
Shop Air Filter Oil for a 2021 Yamaha PW50 Dirt Bike.
Shop Air Box Covers for a 2021 Yamaha PW50 Dirt Bike.
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Shop Intake Parts for a 2021 Yamaha PW50 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.
