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Description
Standard Spark Plug
The workhorse, at the heart of smooth-running engines around the world.
FEATURES
- OEM Quality
- Triple-Gasket Sealing Process
- Consistent Performance
- Plug of Choice in Millions of Vehicles
- Sold each
Technical Specifications
- MFG. Part Number AB-6
Vehicle Information
Yamaha Yamahopper Scooter (1979-1987)
The Yamaha Yamahopper QT50, produced from 1979 to 1987, is a classic moped renowned for its simplicity, fuel efficiency, and minimal upkeep. Its unique shaft-drive system contributed to its low maintenance appeal, making it a popular choice for urban commuting. Throughout this period, the Yamahopper was consistently powered by a reliable 49cc (often referred to as 50cc) two-stroke, single-cylinder engine. This robust engine, shared with other Yamaha models, ensured a stable and consistent platform. The QT50 was offered as a single, consistent model without distinct trim levels, maintaining standard features like turn signals, a solid-state CD ignition, and drum brakes across all years. Minor variations in wiring and electrical equipment were noted between 1979 and 1983, but these did not constitute a major generation or engine change. The core design remained unchanged, ensuring a consistent experience for riders. FAQ:
Q: How do I find parts specific to my 1979-1987 Yamaha Yamahopper?
A: To ensure you select the correct parts for your Yamahopper, please use the year and model selector at the top of this page.
Maintenance
| Component | Interval | Details |
| Transmission Oil | 1 year | Engine uses 2-cycle oil, no engine oil filter. |
| Spark Plug | Initial 1 month, then 3 months, then 6 months, then every 6 months or 1 year | Inspect, clean, or replace as needed. Recommended: NGK BP4HS, gap 0.6-0.7 mm. |
| Air Filter | Initial 1 month, then 3 months, then 6 months, then every 6 months | Wash and dampen with Yamalube 2-cycle oil or SAE motor oil. |