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  3. YAMAHA 905-01103-99-00

YAMAHA 905-01103-99-00 Throttle Screw Spring Nos 90501-10399-00

fits make: Yamaha.

905-01103-99-00 Yamaha 90501-10399-00 New Oem Throttle Screw Spring Nos

( Part Type: Spring Throttle Screw ), ( UPC: 905011039900 )

Review YAMAHA New Oem Throttle Screw Spring Nos

The **Yamaha 90501-110399-00 (905-01103-99-00) Throttle Screw Spring** is a precision-engineered component designed exclusively for Yamaha outboard motors, ensuring optimal throttle response and smooth operation across a wide range of marine applications. This high-quality spring is crafted from durable, corrosion-resistant materials, engineered to withstand the harsh marine environment, including exposure to saltwater, UV radiation, and fluctuating temperatures. Its robust construction prevents premature wear, ensuring reliable performance even after extensive use, which is particularly critical for high-performance outboards where throttle responsiveness directly impacts handling and efficiency.

The spring plays a pivotal role in the throttle linkage system, providing consistent tension to the throttle cable or rod assembly, thereby minimizing slack and ensuring precise control over engine speed. This is especially important for anglers, boaters, and recreational enthusiasts who rely on their Yamaha outboard for both stability and responsiveness. The design of this spring is meticulously calibrated to match Yamaha s throttle mechanisms, guaranteeing a seamless fit with minimal clearance, which reduces the risk of binding or erratic throttle behavior. Whether installed on a compact 2-stroke or a powerful 4-stroke Yamaha outboard, this component contributes to a smoother, more predictable driving experience, enhancing both safety and enjoyment on the water.

Beyond its functional benefits, the **90501-110399-00** spring is built to meet Yamaha s stringent quality standards, ensuring compatibility with the brand s reputation for innovation and durability. Its precise engineering also makes it a preferred replacement part for mechanics and DIY enthusiasts performing routine maintenance or addressing throttle-related issues. By maintaining the integrity of the throttle system, this spring helps preserve the overall performance and longevity of the outboard motor, reducing the likelihood of costly repairs down the line. For those seeking a dependable, long-lasting solution to keep their Yamaha engine running at peak efficiency, this throttle screw spring is an indispensable part that exemplifies Yamaha s commitment to performance and reliability in marine propulsion.

### **Pros and Cons of buying a Yamaha Throttle Screw Spring (Part No. 90501-10399-00 / 905-01103-99-00)**

#### **Pros:**

1. **Direct Compatibility** This part is specifically designed for Yamaha engines, ensuring a precise fit without modifications. It is commonly used in models like the **Yamaha FZ6, FZ8, FZ15, FZ25, and other small-displacement bikes** (especially those with a carbureted or older fuel-injected system).

2. **Performance Improvement** A worn or broken throttle return spring can cause erratic throttle response, stalling, or difficulty revving smoothly. Replacing it ensures proper throttle return, improving rideability and engine responsiveness.

3. **Prevents Further Damage** A failing throttle spring can damage the throttle cable, carburetor, or fuel injection system if left unaddressed. Replacing it early prevents costly repairs down the line.

4. **Easy Installation** This part is relatively simple to install, requiring only basic tools (screwdriver, pliers, and possibly a throttle body removal). Many mechanics and DIYers can complete the job in under an hour.

5. **Cost-Effective** Compared to labor-intensive repairs (e.g., carburetor overhaul or fuel injection system diagnostics), replacing a throttle spring is a low-cost solution.

6. **Aftermarket Availability** While Yamaha s OEM part is reliable, aftermarket equivalents (from brands like **K&N, Mikuni, or local bike parts suppliers**) may offer similar performance at a slightly lower price.

7. **Long-Term Reliability** Yamaha uses durable materials in their OEM parts, meaning this spring should last the lifespan of the bike if properly maintained.

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#### **Cons:**

1. **Potential Counterfeit Parts** Some online sellers may offer fake or low-quality replicas, which could fail prematurely or not fit correctly. Buying from **authorized Yamaha dealers or reputable aftermarket suppliers** reduces this risk.

2. **Mismatched Part Numbers** Yamaha occasionally updates part numbering, and slight variations (e.g., **90501-10399-00 vs. 905-01103-99-00**) may indicate minor differences in design. Double-checking compatibility with your **exact model year and engine type** is crucial.

3. **Throttle Body Wear** If the throttle body or cable has been damaged over time, replacing just the spring may not fully resolve issues. A **throttle body cleaning or cable replacement** might be needed alongside this part.

4. **Limited Lifespan in Harsh Conditions** Extreme heat, moisture, or aggressive riding can accelerate wear. If the bike is used in rough conditions, the spring may need replacement sooner than expected.

5. **DIY Risk for Beginners** While the installation is straightforward, improper handling (e.g., stripping screws, misaligning the spring) can lead to further problems. Those unfamiliar with throttle systems may prefer a professional mechanic.

6. **Price Sensitivity** The part itself is inexpensive, but if labor costs are factored in (e.g., at a shop), the total expense may be higher than expected for some riders.

7. **Stock vs. Aftermarket Trade-Off** While OEM parts are reliable, aftermarket springs may sometimes offer **adjustable tension or improved durability**, but quality varies by brand.

---

### **Conclusion**

The **Yamaha throttle screw spring (90501-10399-00 / 905-01103-99-00)** is a **highly recommended, cost-effective solution** for restoring proper throttle function in compatible Yamaha bikes. Its **direct compatibility, ease of installation, and preventative benefits** outweigh the minor risks, provided the correct part is sourced and installed properly.

**If your bike exhibits symptoms like:**

- Slow throttle return

- Stalling when releasing the throttle

- Erratic idle or revving issues

- Visible wear or damage to the existing spring

**then replacing it is a wise investment.**

For best results:

- **Verify the exact part number matches your model** (consult your bike s manual or a Yamaha parts database).

- **Purchase from a trusted source** (authorized dealer, reputable online retailer, or a bike parts specialist).

- **Inspect the throttle body and cable** while the unit is disassembled for any additional wear.

- **Follow installation instructions carefully** to avoid misalignment or damage.

### **Final Recommendation:**

**Buy the Yamaha OEM throttle screw spring (or a high-quality aftermarket equivalent) if you experience throttle-related issues.** The part is **affordable, easy to install, and prevents more serious engine problems.** If unsure about installation, consult a mechanic but for most riders, this is a **quick, low-risk upgrade** with significant payoff in rideability and reliability.

Details:

If the original package is included it may show signs of wear. All parts are in stock and ready to ship. Throttle Screw Spring is new and in excellent condition, not original packaging.

Items are shipped using USPS, UPS, and FedEx. New OEM Yamaha 90501-10399- 905-01103-99-00 Throttle Screw Spring NOS.

part #: 905011039900 price

  • $15.99

specifications intakefuelmotorcycle:

  • for makes: Yamaha
  • part type: Spring Throttle Screw
  • upc: 905011039900

general intakefuelmotorcycle:

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  • Motorcycle Scooter Parts Accessories > Air Intake Fuel Delivery > Other Air Intake Fuel Delivery

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for makes: yamaha, part type: spring throttle screw,
category: motorcycle parts > motorcycle scooter parts accessories > air intake fuel delivery, sku: 22671390341985762,
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