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Description
FEATURES
- Designed as a drop-in replacement for OEM ball-type bearing sets
- High-quality tapered roller bearings decrease maintenance along with less wear and longer life
Technical Specifications
- MFG. Part Number 22-1077
Vehicle Information
Yamaha PW50 Dirt Bike (1981-2026)
The Yamaha PW50, a popular mini dirt bike designed for young riders, has maintained a remarkably consistent design and specifications from its introduction in 1981 through to the 2026 model year. Initially known as the "Y-Zinger," it was renamed PW50 in 1991. This iconic model features a reliable 49cc air-cooled, two-stroke, single-cylinder engine with reed-valve induction, paired with a fully automatic, single-speed transmission and a low-maintenance shaft final drive. Yamaha's Autolube oil injection system simplifies operation by eliminating the need for fuel/oil premixing, making it ideal for young riders. The PW50 has not been offered in traditional "trims," maintaining a single model with variations primarily in color schemes and minor aesthetic updates. Despite its long production, there have been very few significant generation or engine changes mid-cycle. Notable minor updates include a switch to oil-dampened suspension components in 1997, with later improvements to fork and rear suspension components. This enduring design ensures high parts interchangeability across its many model years. Q: How do I ensure I select the correct part for my Yamaha PW50?
A: To guarantee a perfect fit, please use the year and edition selector at the top of this page to specify your exact model year.
Maintenance
| Component | Interval | Details |
| Engine Oil (Two-Stroke Oil Injection System) | Check level and top up as needed | The Autolube system injects two-stroke oil directly into the engine, eliminating the need for premixing. Oil is consumed during operation. |
| Transmission Oil | Every 10 hours or annually | Change more frequently (every 5 to 7 hours) for aggressive or race-level riding. Check level every 20 hours or monthly. |
| Spark Plug | Inspect regularly, replace as needed | Check for wear and deposits to ensure optimal engine performance. |
| Air Filter | Clean every 10 hours, replace at least once per season | Clean more frequently (every 5 hours or after every ride) in dusty or muddy conditions. Replace immediately if damaged. |