fits model: Hs1, Cs3. make: Yamaha. year: 1970–1971.

( Country Of Origin: Japan ), ( UPC: 287833180000 )
The **Yamaha 287-83318-00-00 NOS (New Old Stock) 1970 1971 HS1/CS3 Flasher** is a meticulously preserved, high-performance ignition component that embodies the reliability and precision synonymous with Yamaha s classic motorcycle engineering from the early 1970s. This factory-direct flasher, still encased in its original packaging or stored under ideal conditions, represents a rare opportunity to restore or upgrade an authentic vintage Yamaha motorcycle with genuine, unmodified parts. Designed specifically for the **HS1 (High Speed 1)** and **CS3 (Classic Sport 3)** models, this flasher is a critical component for the ignition system, ensuring consistent spark generation and optimal engine performance. Crafted from durable, corrosion-resistant materials, it features a robust mechanical design with a reliable internal mechanism that triggers the ignition coil at precise intervals, synchronized with the engine s crankshaft rotation. The unit s compact yet sturdy construction reflects Yamaha s attention to detail, with a clean, functional layout that prioritizes durability without sacrificing ease of installation. Whether used in a fully restored classic bike or as a replacement for a worn-out part in a project motorcycle, this NOS flasher guarantees a seamless fit and the authentic feel of a factory-built Yamaha. Its inclusion in a collection or restoration project not only enhances mechanical integrity but also preserves the historical authenticity of the motorcycle, making it a prized addition for enthusiasts who value both performance and heritage.
### **Pros and Cons of buying a Yamaha HS1/CS3 Flasher (Model 287-83318-00-00, NOS 1970-1971)**
#### **Pros**
1. **High Quality and Reliability** Yamaha was a pioneer in motorcycle electronics, and the HS1/CS3 flasher is known for its durability and precision. These units were used in production motorcycles, meaning they were built to withstand real-world conditions.
2. **Original Equipment (OEM) Specifications** Being a **New Old Stock (NOS)** part means it was never installed in a motorcycle, ensuring it is in pristine condition without wear from prior use. It meets the exact factory standards for Yamaha s 1970s models.
3. **Compatibility with Classic Motorcycles** This flasher was designed for Yamaha s **HS1 (High-Speed Ignition)** and **CS3 (Carbureted Single)** systems, making it a direct fit for many 1970s and early 1980s Yamaha bikes, including the **TD2, DT2, DT250, DT300, and others** with similar electrical setups.
4. **Rare and Collectible** NOS parts for classic motorcycles are increasingly difficult to find, especially in perfect condition. This flasher could be a valuable addition for restoration projects or enthusiasts looking to maintain authenticity.
5. **Better Than Aftermarket Alternatives** Many modern flasher replacements lack the same level of precision and reliability as original Yamaha units. This NOS part ensures proper turn-signal operation without common issues like erratic flashing or failure.
6. **Historical and Nostalgic Value** For collectors and restorers, owning an original Yamaha part adds authenticity and appeal, especially for those who prioritize period-correct components.
7. **Potential for Resale Value** If preserved well, this flasher could retain value over time, making it a worthwhile investment for serious collectors.
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#### **Cons**
1. **Age-Related Wear (Despite Being NOS)** Even though it s never been installed, the unit is **50 years old**, meaning the internal components (capacitors, resistors, wiring) may degrade over time. Some NOS parts develop minor issues after long storage.
2. **Limited Availability** Finding a NOS Yamaha flasher in good condition can be challenging. Prices may be higher due to scarcity, and not all sellers may offer genuine parts.
3. **Potential for Counterfeit or Rebuilt Units** Some sellers may pass off rebuilt or modified units as NOS. Buyers must verify authenticity through documentation, testing, or trusted sources.
4. **Compatibility Issues with Modern Systems** While it fits mechanically, wiring and voltage requirements may differ slightly from modern motorcycles. A technician may need to adjust connections or add protection (e.g., fuses) to prevent damage.
5. **No Warranty or Return Policy** Since it s a vintage part, sellers rarely offer warranties. If it fails shortly after purchase, repairs or replacements may be difficult and costly.
6. **Testing Required Before Installation** Before installing, the flasher should be tested to ensure it functions correctly. A faulty unit could cause electrical issues in the motorcycle.
7. **Higher Cost Compared to New Replacements** While NOS parts are desirable, they are often **more expensive** than modern flasher replacements. For budget-conscious buyers, this may not be the best choice.
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### **Conclusion**
The **Yamaha HS1/CS3 Flasher (287-83318-00-00, NOS 1970-1971)** is an excellent choice for **restoration projects, collectors, and enthusiasts** who prioritize authenticity and reliability. Its high-quality construction, direct compatibility with classic Yamaha bikes, and rarity make it a strong candidate for those willing to invest in period-correct parts.
However, **buyers should be prepared for potential age-related issues, higher costs, and the need for careful testing before installation**. If the primary goal is **functionality over nostalgia**, a modern flasher replacement may be a more practical and cost-effective solution. But for **purists and collectors**, this NOS part is a valuable and desirable addition.
### **Recommendation**
- **Buy if:** You are restoring a classic Yamaha motorcycle, prioritize authenticity, and are willing to pay a premium for a genuine NOS part. Ensure the seller provides proof of authenticity (e.g., original packaging, serial number verification).
- **Avoid if:** You are on a tight budget, need a quick replacement, or are not confident in testing vintage electronics. In such cases, a **modern flasher (e.g., from a reputable aftermarket brand like **Screamin Eagle or Speedhawk**) may be a safer, more affordable alternative.
- **Additional Steps Before Purchase:**- **Test the flasher** (if possible) to confirm it functions properly.
- **Verify the seller s reputation** to avoid counterfeit or rebuilt units.
- **Consult a motorcycle electrician** before installation to ensure compatibility with your bike s wiring.
- **Consider a backup plan** in case the NOS part fails, such as having a modern flasher on hand.
For most **serious restorers and Yamaha purists**, this flasher is a worthwhile investment. For casual riders or those seeking a straightforward replacement, a modern alternative may be more practical.
This Yamaha 287-83318-00-00 STAY, FLASHER 1 is used on these model's and components 1971 CS3B LAMP CS3B. 1970 HS1 FLASHER LAMP HS-1B. 1971 HS1B FLASHER LAMP HS-1B.