YAMAHA 5TA-14991-00 Nos Carburetor Screw

( Manufacturer Part Number: 5TA-14991-00 ), ( Part Type: Carburetor Screw )

Review YAMAHA Nos Carburetor Screw fits YZ250 2003–2013

The **Yamaha 5TA-14991-00 No-Spark Carburetor Screw** is a precision-engineered component designed exclusively for the **2003 2013 Yamaha YZ250** dirt bike, serving as a critical adjustment tool for fine-tuning the throttle response and overall performance of the bike s carburetor system. This high-quality, **chrome-plated screw** is engineered to replace the standard spark plug screw, allowing riders to make precise throttle valve adjustments without the risk of accidental ignition hence the "no-spark" designation. Crafted from durable, corrosion-resistant materials, this screw features a **fine-threaded design** that ensures secure and repeatable positioning, enabling riders to dial in the perfect mixture of air and fuel for optimal power delivery, smooth acceleration, and improved throttle control. Whether you're a competitive racer looking to shave milliseconds off lap times or an enthusiast seeking to refine the bike s handling for better control on technical terrain, this screw provides the precision needed to achieve the ideal carburetor setting. Its compatibility with the YZ250 s carburetor system specifically the **Pike carburetor** used in these models makes it an essential accessory for any rider serious about performance tuning. Installing the **5TA-14991-00** is a straightforward process, requiring only basic tools, and it eliminates the need for a spark plug during adjustments, reducing the risk of engine damage from misfires or improper throttle settings. With its reliability, ease of use, and direct impact on engine performance, this component is a must-have for anyone looking to maximize the potential of their Yamaha YZ250.

### Pros and Cons of Buying a 2003-2013 Yamaha YZ250 with a NOS Carburetor (Part Number: 5TA-14991-00)

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#### **Pros**

1. **Reliability and Durability**

The Yamaha YZ250 is widely regarded as one of the most durable and dependable dirt bikes in its class. The 2003-2013 models, in particular, are known for their robust frame, engine, and overall build quality. With proper maintenance, these bikes can easily last well over 10,000 miles per year for many years.

2. **Performance and Power**

The YZ250 features a 249cc, air-cooled, single-cylinder engine that produces around 30-35 horsepower, depending on the year and tuning. This makes it a strong and capable bike for cross-country riding, trail riding, and even light motocross. The NOS (New Old Stock) carburetor (5TA-14991-00) is a genuine Yamaha replacement part, ensuring a proper fit and reliable performance without the risk of aftermarket inconsistencies.

3. **Ease of Maintenance and Repairability**

The YZ250 is a relatively simple bike to work on compared to more complex modern models. Many parts, including the carburetor, are easily accessible and replaceable. The engine and drivetrain are straightforward, making it easier and cheaper to maintain than some competitors.

4. **Affordability**

The YZ250 is one of the most budget-friendly dirt bikes in its class. Parts, labor, and fuel costs are lower than those of more expensive bikes like the KTM 250 SX-F or Husqvarna FE 250. This makes it an attractive option for riders on a budget or those looking for a reliable backup bike.

5. **Versatility**

The YZ250 is well-suited for a variety of riding disciplines, including trail riding, enduro, and light motocross. Its simplicity and durability make it a great choice for riders who want a no-frills, capable bike without the complexity of modern electronics or suspension tuning.

6. **Strong Aftermarket Support**

The YZ250 has a large and active aftermarket community. This means you ll find a wide range of parts, upgrades, and tuning options to customize your bike to your liking. From carburetor kits to exhaust systems and suspension upgrades, there are plenty of ways to improve performance if desired.

7. **Resale Value**

While not as high as some premium brands, the YZ250 retains a decent resale value due to its reliability and popularity. This means you can often recoup a significant portion of your investment if you decide to sell it later.

8. **Lightweight and Maneuverable**

The YZ250 is one of the lightest bikes in its class, weighing around 210-220 pounds (depending on the model year). This makes it highly maneuverable and easy to handle, especially on technical trails or in tight corners.

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#### **Cons**

1. **Outdated Technology**

The YZ250 lacks modern features found on newer bikes, such as electronic fuel injection (EFI), advanced suspension systems, and digital displays. While this may not be a dealbreaker for all riders, those who prefer the latest technology or advanced riding aids may find the YZ250 lacking.

2. **Less Power Relative to Modern Bikes**

While the YZ250 is still a capable bike, it doesn t match the power output of modern 250cc bikes, which often produce 40-50 horsepower thanks to EFI and other advancements. If you re looking for a bike that can handle aggressive motocross or high-speed trail riding, you might find the YZ250 underpowered.

3. **Suspension Limitations**

The YZ250 s suspension is basic compared to modern bikes. The fork and shock are not as adjustable or high-performance as those found on newer models. While this isn t a major issue for casual riders, serious motocross riders may prefer the improved handling and comfort of modern suspension systems.

4. **Fuel Injection vs. Carburetion**

The carbureted nature of the YZ250 means it can be less consistent in performance, especially in varying conditions (e.g., high altitude, cold weather, or humid environments). While the NOS carburetor is reliable, it doesn t offer the precision and adaptability of fuel injection. Tuning a carbureted bike can also be more challenging and less precise.

5. **Less Comfort for Long Rides**

The YZ250 s ergonomics and seating position are more aggressive and less comfortable for long-distance riding compared to modern enduro bikes. If you plan to do extensive trail riding or long-distance enduro, you might find the bike less comfortable over time.

6. **Limited Modern Upgrades**

While the aftermarket for the YZ250 is strong, some modern upgrades (e.g., high-performance suspension, advanced exhaust systems, or electronic components) may not be as readily available or as compatible as they would be on a newer bike. This can limit customization options for some riders.

7. **Environmental Regulations**

Depending on where you ride, older carbureted bikes may face restrictions or challenges in areas with strict emissions regulations. While the YZ250 is not as polluting as some older bikes, it may not meet the standards of newer, more environmentally friendly models.

8. **Potential for Wear and Tear**

Since the YZ250 is an older model, if you re buying a used bike, there s a risk of hidden wear and tear, such as worn-out suspension, clutch, or drivetrain components. A thorough inspection by a mechanic is highly recommended before purchasing.

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### **Conclusion**

The Yamaha YZ250 (2003-2013) with a NOS carburetor (5TA-14991-00) is an excellent choice for riders who prioritize reliability, simplicity, and affordability. It s a fantastic bike for trail riding, enduro, and casual motocross, offering a balance of power, durability, and ease of maintenance. The NOS carburetor ensures that you re getting a genuine, high-quality replacement part, which will keep the bike running smoothly without the risks associated with aftermarket parts.

However, if you re looking for a bike with modern technology, advanced suspension, or higher power output, the YZ250 may fall short. It s also worth noting that while the bike is reliable, it requires regular maintenance to keep it in top condition, especially if you plan to ride it frequently or aggressively.

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### **Recommendation**

- You re looking for a reliable, no-frills dirt bike for trail riding, enduro, or light motocross.

- You prefer a simple, easy-to-maintain bike with a strong aftermarket support system.

- You re on a budget and want a bike that s affordable to purchase, insure, and maintain.

- You don t need the latest technology or high-performance features and are content with carburetion.

- You plan to ride the bike regularly and want a durable machine that will last for many years with proper care.

- You want more power and modern features like electronic fuel injection and advanced suspension.

- You plan to ride aggressively in motocross or on technical terrain where performance and handling are critical.

- You prefer the convenience and precision of fuel injection over carburetion.

- You re willing to invest more in a bike that offers better comfort and adjustability for long-distance riding.

In summary, the YZ250 is a fantastic bike for the right rider one who values reliability, simplicity, and affordability over cutting-edge technology. If you fit this description, the NOS carburetor will help ensure your bike stays in great shape for years to come.

Details:

2003 2013 Yamaha YZ250 NOS Carburetor choke cap, New condition.

part #: 5ta1499100 prices

• $16.99-$19.99

specifications cyclevintagee:

• for models: Yz250
• for makes: Yamaha
• for years: 2003-2013
• mpn: 5ta-14991-00
• part type: Carburetor Screw

general cyclevintagee:

• condition: Used
• Parts Accessories > Motorcycle Scooter Parts Accessories > Other Motorcycle Scooter Parts Accessories

payments cyclevintagee:

• credit card: Diners-club
• wallet: Paypal
• other

returns cyclevintagee:

• paid by: Buyer
• time: 30 Days
• policy: Returns Accepted

seller cyclevintagee:

• # reviews: 1988
• rating: 100.0%
• city: Ballston Lake, New York

shipping cyclevintagee:

• transit: 4-8 Days
• service: Standard
• cost: $0.00
• type: Fixed
• class: Standard

offer cyclevintagee:

• options: Ship-to-home
• started: May 7, 2026
• availability: In Stock
• quantity: 1
• sold: 0

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