fits model: It400, Yz400. make: Yamaha.

( Part Type: Start Gear ), ( Vintage Part: Yes ), ( Country Of Origin: Japan ), ( UPC: 498156510200 )
The **Yamaha IT400/YZ400 Kick-Start Idle Gear** (part number **498-15651-02-00**) is a precision-engineered component designed specifically for Yamaha s IT400 and YZ400 off-road motorcycles, ensuring smooth and reliable operation of the kick-start mechanism. This idle gear plays a critical role in the bike s ignition system by maintaining consistent engagement between the kick-starter lever and the flywheel during startup, reducing wear on the starter components and preventing premature failure. Crafted from high-quality, durable materials, this gear is built to withstand the demanding conditions of off-road riding, where vibrations, dirt, and heavy use can accelerate wear on smaller parts. Its precise fitment ensures that the kick-start mechanism operates with minimal resistance, allowing riders to easily initiate the engine with a single, fluid motion even under challenging conditions. Whether used for maintenance, replacement, or upgrading an existing bike, this idle gear is a straightforward yet essential upgrade for enthusiasts seeking to enhance the longevity and performance of their Yamaha IT400 or YZ400. Its compatibility with the bike s stock kick-start system makes it an ideal choice for riders who prioritize reliability without sacrificing the authenticity of their motorcycle s original design.
### Yamaha IT400/YZ400 (Model: 498-15651-02-00) Pros and Cons
#### **Pros:**1. **Reliability and Durability** Yamaha is known for building robust, long-lasting engines. The IT400/YZ400 is a proven design used in generators, pressure washers, and other power equipment, meaning it has been tested for durability in various applications.
2. **Kick-Start Mechanism** The kick-start feature makes it easier to start the engine without an electric starter, which can be useful in remote or off-grid locations where power sources are limited.
3. **Idle Gear Functionality** The idle gear allows the engine to run smoothly at low RPMs, which is beneficial for applications like generators where consistent idling is required without excessive wear.
4. **Versatility** This engine can be adapted for multiple uses, including generators, pressure washers, pumps, and even small vehicles or equipment. Its modular design makes it easy to integrate into different setups.
5. **Fuel Efficiency** Yamaha engines are generally fuel-efficient compared to some competitors, reducing operational costs over time.
6. **Low Maintenance** With proper care, this engine requires minimal upkeep, making it a cost-effective choice for long-term use.
7. **Aftermarket Support** Yamaha has a large user base, so finding replacement parts, manuals, and maintenance guides is relatively straightforward.
8. **Quiet Operation** Compared to some other engines in its class, the IT400/YZ400 tends to run more quietly, which is advantageous for residential or noise-sensitive applications.
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#### **Cons:**1. **No Electric Start** The lack of an electric starter can be inconvenient in cold weather or when the engine is difficult to kick-start, especially for those who prefer the convenience of a push-button start.
2. **Limited Power Output** At 15 HP, this engine is best suited for light to medium-duty applications. For heavy-duty tasks like large generators or industrial equipment, a more powerful engine may be necessary.
3. **Weight and Size** The engine is relatively heavy (around 60-70 lbs depending on the model), which can make installation or relocation more challenging, especially for DIYers without proper lifting equipment.
4. **Vibration and Noise** While generally quieter than some competitors, it still produces noticeable vibration and noise, which may not be ideal for indoor or noise-restricted environments.
5. **Fuel and Oil Requirements** Like many small engines, it requires regular oil changes and may need premium fuel or additives to maintain performance, adding to maintenance costs.
6. **Resale Value** Specialty engines like this one may not hold their value as well as more common or brand-name models, especially if they are repurposed or modified.
7. **Learning Curve for Installation** If you re not experienced with engine installation, setting up the IT400/YZ400 in a generator or other equipment may require some technical skill or professional assistance.
8. **Limited Modern Features** Unlike newer engines, this model lacks modern conveniences such as digital gauges, automatic choke systems, or advanced fuel injection, which may limit its appeal for tech-savvy users.
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### **Conclusion:**The Yamaha IT400/YZ400 (498-15651-02-00) is a solid, dependable engine well-suited for light to medium-duty applications where reliability, simplicity, and versatility are prioritized. Its kick-start and idle gear features make it practical for generators, pressure washers, and other equipment where consistent low-speed operation is needed. However, its lack of an electric start, moderate power output, and physical size may be drawbacks for users seeking convenience or heavy-duty performance.
If you need a durable, off-grid or backup power solution and are willing to handle the kick-start process, this engine is an excellent choice. For those who prefer electric start, higher power, or quieter operation, a more modern or specialized engine may be a better fit.
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### **Recommendation:** **Buy this engine if:**- You need a reliable, long-lasting engine for a generator, pressure washer, or similar light to medium-duty application.
- You are comfortable with kick-starting the engine and don t require electric start.
- You value versatility and plan to repurpose the engine for multiple uses.
- You re working in a setting where fuel efficiency and low maintenance are important.
**Avoid this engine if:**- You prioritize electric start for convenience, especially in cold climates.
- You need a high-power engine for heavy-duty tasks (e.g., large generators, industrial equipment).
- You re sensitive to noise or vibration and require a quieter, smoother-running engine.
- You lack experience with engine installation or maintenance and need a more user-friendly model.
**Alternative Considerations:**- For electric start convenience, look at Yamaha s newer models like the EF1000iS or Honda s GX series.
- For higher power, consider Yamaha s larger engines (e.g., IT650) or commercial-grade models.
- If noise is a concern, explore engines with sound-dampening features or electric-start options.
Yamaha mx400b 1975. Yamaha mx250b 1975. Good usable condition, YAMAHA 1975 MX250B TRANSMISSION: Yamaha mx250b MX400B 1976 DT250C TRANSMISSION 250B C 400B C: dt250c DT400C IT400C YZ250C: yz250c YZ400C: YZ400c 1977 YZ250D 1978 YZ250E.