KAWASAKI 15001-3758 Keihin Cdk Carburetor Carb 38MM

( Manufacturer Part Number: 15001-3758 ), ( Part Type: Carburetor ), ( Country Of Origin: Japan )

Review KAWASAKI Keihin 38mm Cdk Carburetor Carb Assembly fits SX 650 1991–1993

The Kawasaki 15001-3758 carburetor, specifically designed for the 1991 through 1993 650 SX models equipped with a Keihin 38mm CDK carburetor setup, represents a refined yet robust component essential for optimizing performance and reliability in these iconic off-road machines. This high-quality carburetor is engineered to deliver precise fuel-air mixture control, ensuring smooth throttle response, improved acceleration, and enhanced engine efficiency across a wide range of riding conditions. The CDK (Constant Downflow Keihin) design incorporates a unique air intake system that minimizes turbulence and maximizes airflow, which is critical for the 650 SX s high-revving, two-stroke powerplant. The 38mm venturi size strikes an ideal balance between low-end torque and mid-range punch, making it well-suited for both aggressive trail riding and competitive motocross applications. Crafted from durable materials, including a robust aluminum body and precision-machined internals, this carburetor is built to withstand the demands of off-road use, including exposure to dust, debris, and varying environmental conditions. The CDK s adjustable pilot and main jets, along with its reliable float mechanism, allow for fine-tuning to match specific fuel blends and riding styles, whether you re running premium unleaded gasoline or a more aggressive mix. For enthusiasts looking to restore or upgrade their 1991 1993 650 SX, this carburetor serves as a direct-fit replacement that maintains factory performance while offering the opportunity for subtle enhancements in power delivery and throttle control. Whether paired with stock components or integrated into a more aggressive aftermarket setup, the Kawasaki 15001-3758 carburetor remains a dependable choice for those seeking both authenticity and performance in their classic dirt bike.

### **Pros and Cons of Buying a Kawasaki 1991-1993 650 SX with Keihin 38mm CDK Carburetor**

#### **Pros**

1. **Classic Reliability** The Kawasaki 650 SX (1991-1993) is known for its robust, air-cooled single-cylinder engine, which is less prone to catastrophic failure compared to some modern liquid-cooled designs. With proper maintenance, these bikes can last decades.

2. **Simple and Durable Design** The single-cylinder engine is mechanically straightforward, making repairs and modifications easier for DIY enthusiasts. The lack of complex electronics (unlike modern bikes) means fewer points of failure.

3. **Off-Road Capability** The 650 SX was designed as a trail and enduro bike, with a sturdy frame, long-travel suspension (for its era), and a low seat height. It performs well on dirt roads, trails, and light rock crawling.

4. **Modification Potential** The Keihin CDK carburetor (38mm) is a solid choice for stock performance, but it can be upgraded to larger carbs (e.g., 40mm or 42mm) or even swapped for a Mikuni or Dell Orto for better throttle response. The engine also accepts aftermarket exhausts, clutch kits, and suspension upgrades.

5. **Fuel Efficiency** Compared to modern dirt bikes, the 650 SX is surprisingly fuel-efficient, making it a cost-effective choice for casual riding or training.

6. **Resale Value & Niche Appeal** While not a high-demand bike, the 650 SX has a loyal following among vintage dirt bike enthusiasts. A well-maintained example can still fetch a decent price in the used market.

7. **Lower Cost of Ownership** Parts are relatively affordable, and labor costs are minimal compared to modern bikes with complex drivetrains or electronic fuel injection.

8. **Historical Significance** For collectors or riders who appreciate classic Japanese dirt bikes, the 650 SX is a well-regarded model from Kawasaki s early off-road lineup.

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#### **Cons**

1. **Outdated Technology** The bike lacks modern features such as disc brakes (early models had drum brakes), electronic ignition (early models had points ignition), and advanced suspension tuning. This can make it less safe and less comfortable for aggressive riding.

2. **Poor Fuel Economy on Modern Fuel** The CDK carburetor was tuned for leaded fuel, and while it can run on unleaded, it may require adjustments (e.g., larger jets) to avoid running rich or flooding. Modern fuel blends can also cause carburetor issues over time.

3. **Weak Power Delivery** The 650cc single-cylinder produces around 45-50 horsepower, which is adequate for trail riding but feels underpowered compared to modern 450cc or 650cc twin-cylinder bikes. It lacks the mid-range punch and high-RPM power of newer engines.

4. **Suspension Limitations** The stock suspension (forks and shock) is stiff by today s standards and may not handle rough terrain as well as modern units. Upgrading the suspension is often necessary for comfort and performance.

5. **Maintenance Requirements** The points ignition system (if not upgraded to electronic) requires periodic adjustments and replacement, adding to upkeep costs. The carburetor also needs regular cleaning and tuning to maintain optimal performance.

6. **Weight and Handling** The bike is heavier than modern dirt bikes (around 220-230 lbs), which can make it less nimble on technical trails. The single-cylinder engine also lacks the torque curve of a twin-cylinder, making it less responsive in tight corners.

7. **Limited Availability of Parts** While not extinct, some aftermarket parts (e.g., specific carburetor components, clutch kits, or rare suspension upgrades) may be harder to find than for more modern bikes.

8. **Riding Experience** The lack of disc brakes, poor ergonomics (especially for taller riders), and outdated controls (e.g., no quickshifter) can make it less enjoyable for serious riders compared to contemporary bikes.

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### **Conclusion**

The Kawasaki 650 SX (1991-1993) is a **great choice for riders who prioritize simplicity, reliability, and a classic off-road experience** particularly those who enjoy tinkering with carburetors, suspension, or engine modifications. It s ideal for **casual trail riding, training, or as a project bike** for enthusiasts who appreciate vintage machinery.

However, it is **not the best option for serious enduro riders, track use, or those seeking modern comfort and performance**. The bike s outdated technology, weak power delivery, and maintenance demands make it less suitable for aggressive riding or daily use compared to newer dirt bikes.

### **Recommendation**

- **Buy it if:** You want a **budget-friendly, low-maintenance trail bike**, enjoy working on mechanical projects, or appreciate the nostalgia of a classic Kawasaki. It s also a good choice if you plan to **restore and modify it** for better performance.

- **Avoid it if:** You need **modern safety features (disc brakes, electronic ignition)**, want a **powerful, responsive engine**, or plan to ride it frequently on rough terrain without upgrades.

- **Consider alternatives:** If you want a **more capable single-cylinder bike**, look at a **Yamaha YZ250F (1990s-2000s)** or **Honda CR250R** for better power and reliability. For a **modern trail bike**, a **KTM 350/450 EXC** or **Husqvarna TE 300** offers superior handling and technology.

Ultimately, the 650 SX is a **fun, characterful bike** for the right rider one who doesn t mind its limitations in exchange for its simplicity and charm.

Details:

Kawasaki 650 SX CDK 2 Carb. Throttle lever pulls down for 650 Sx. Former Owner Installed Throttle Cable From Bracket to Arm on Carb. Choke Lever Arm Bent and Still Usable, Although Former Owner used Primer Pump.

Throttle Cable Female Receiver on Carb Sheared Off. Carb Inside Clean. Non OEM Screw on Diaphragm Cover Plate.

part #: 150013758 prices

• $75.00-$259.95

specifications jetskiintakeez:

• for models: Sx, 650
• for makes: Kawasaki
• for years: 1991-1993
• mpn: 15001-3758
• part type: Carburetor
• country of origin: Japan

seller jetskiintakeez:

• city: Saint David, Arizona
• # reviews: 3249
• rating: 99.7%

returns jetskiintakeez:

• policy: No Returns

shipping jetskiintakeez:

• cost: $18.00
• type: Fixed
• transit: 4-7 Days
• carrier: USPS
• class: Standard
• service: USPS Ground Advantage

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offer jetskiintakeez:

• options: Ship-to-home
• quantity: 1
• started: June 4, 2026
• sold: 0
• availability: In Stock

general jetskiintakeez:

• Parts Accessories > Personal Watercraft Parts > Intake Fuel Systems
• condition: Used

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