Air Filter Cleaning & Replacement Guide for 1987 Yamaha PW50
Shop parts for a 1987 Yamaha PW50 Dirt Bike.
The 1987 Yamaha PW50 is known for its reliable, simple 2-stroke engine and straightforward maintenance. Keeping your dirt bike’s air filter clean and properly installed is essential for peak performance and engine longevity. This guideexclusive to MotoSport.comdetails how to clean and replace the air filter of your 1987 PW50, ensuring your ride continues to deliver dependable fun for years to come.
Understanding Your PW50 Air Filter
The 1987 PW50 features a foam element air filter housed inside the airbox. The foam filter is washable and reusable, designed to catch particles with its dual-stage constructiona coarse-foam outer layer and a finer inner layer. This design offers superior filtration and airflow, protecting the engine from dust and dirt without restricting performance.
When to Clean or Replace
- Clean: After every ride in dusty or muddy conditions.
- Replace: If the foam shows signs of tearing, brittleness, or persistent clogging after cleaning.
- Check: Before every ride; a clogged filter limits performance and may cause engine damage.
Tools & Materials Needed
- Foam air filter cleaner or mild dish soap
- Foam filter oil
- Clean water
- Clean towel or paper towels
- Gloves (recommended)
- Replacement filter (if needed)
How to Remove the Air Filter
- Locate the airbox under the seat or side panelremove the cover by unscrewing or unclipping fasteners.
- Remove the air filter element. Note its orientation for reinstallation.
- Inspect the airbox for debris; wipe it clean as needed.
Cleaning Instructions
- Gently tap the foam filter to loosen dirt.
- Place the filter in a bucket with warm, soapy water. Squeeze (never wring) repeatedly to release trapped dirtrepeat with fresh water until clean.
- Rinse thoroughly under running water. Squeeze out excess water.
- Let the filter air-dry completely in a shaded area.
Oiling the Filter
- Once dry, apply foam filter oil evenly across the entire filter. Work the oil into the foam by hand to ensure full coverage.
- Lightly squeeze out excess oildo not squeeze so hard that you tear the foam.
- The filter should feel tacky, not dripping.
Reinstalling the Filter
- Fit the filter securely back into the airbox, matching the original orientation.
- Check for a snug seal all the way aroundthe PW50 relies on a thick, flat foam sealing surface for maximum contact and protection.
- Reattach the airbox cover, ensuring it's firmly in place.
Pro Tips for 1987 Yamaha PW50 Owners
- The air filter element for the PW50 is compatible across many model years, so finding replacements or upgrades is straightforward.
- Inspect the intake boot and box for any cracks or air leaks during maintenance—air leaks can let in unfiltered air, risking engine damage.
- Use only foam-specific filter oil, as regular motor oil will not offer proper filtration or may damage the foam.
- Store a spare clean, oiled filter in a resealable bag for quick swaps when needed.
Signs Your Air Filter Needs Immediate Attention
- Loss of power or hesitation during acceleration
- Visible dirt or sand in the airbox
- Unusual engine noises or smoke
- Foam tearing, hardening, or loss of shape
With routine cleaning and attention, your 1987 Yamaha PW50 will keep running strong ride after ride. For the most trusted selection of OEM and aftermarket parts, MotoSport.com has you covered every step of the way.
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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.
