Auto123: Unveiling the Yamaha XS400J: A Timeless Ride for the Modern Age

The Yamaha XS400J is a motorcycle that was manufactured by Yamaha from 1976 to 1982. It was powered by a 398 cc (24.3 cu in) parallel twin engine and had a top speed of 112 mph (180 km/h). The XS400J was a popular motorcycle in the 1970s and 1980s, and it is still considered a classic motorcycle today.

The XS400J was known for its reliability, fuel efficiency, and handling. It was also relatively easy to maintain, making it a good choice for beginner riders. The XS400J was also used by law enforcement and military forces in some countries.

The Yamaha XS400J is a significant motorcycle in the history of motorcycling. It was one of the first Japanese motorcycles to be exported to the United States, and it helped to establish Yamaha as a major player in the motorcycle industry. The XS400J is also a popular collector's item today, and it is still used by some riders as a daily commuter.

Yamaha XS400J

The Yamaha XS400J is a classic motorcycle that was first produced in 1976. It is known for its reliability, fuel efficiency, and handling. The XS400J was also one of the first Japanese motorcycles to be exported to the United States, and it helped to establish Yamaha as a major player in the motorcycle industry.

Engine: 398 cc (24.3 cu in) parallel twin
Top speed: 112 mph (180 km/h)
Fuel efficiency: 55 mpg (4.3 L/100 km)
Handling: Neutral and responsive
Brakes: Front disc and rear drum
Suspension: Telescopic forks and dual rear shocks
Weight: 385 lb (175 kg)
Seat height: 30.7 in (780 mm)
Fuel tank capacity: 4.2 gal (16 L)
Production years: 1976-1982

These key aspects of the Yamaha XS400J make it a great choice for beginner riders, commuters, and collectors alike. The XS400J is a reliable and fuel-efficient motorcycle that is easy to handle and maintain. It is also a relatively affordable motorcycle, making it a great value for the money.

Engine

The Yamaha XS400J is powered by a 398 cc (24.3 cu in) parallel twin engine. This engine is known for its reliability, fuel efficiency, and power. The parallel twin design means that the two cylinders are arranged side-by-side, which gives the engine a compact and lightweight design. The 398 cc displacement provides a good balance of power and fuel economy, making the XS400J a good choice for both commuting and touring.

The engine is also relatively easy to maintain, making it a good choice for beginner riders. The XS400J's engine is a key component of its overall performance and reliability. The parallel twin design provides a good balance of power and fuel economy, and the 398 cc displacement provides enough power for most riding situations.

Overall, the Yamaha XS400J's engine is a reliable, fuel-efficient, and powerful engine that is easy to maintain. This makes the XS400J a good choice for beginner riders, commuters, and touring riders alike.

Top speed

The Yamaha XS400J has a top speed of 112 mph (180 km/h). This is a relatively high top speed for a motorcycle of its size and displacement. It is also higher than the top speeds of many other motorcycles in its class.

Performance: The XS400J's top speed is a testament to its performance capabilities. It is a powerful motorcycle that can accelerate quickly and smoothly. The XS400J's top speed also makes it a good choice for highway riding and long-distance touring.
Thrill and excitement: For many riders, the top speed of a motorcycle is an important factor in determining its thrill and excitement factor. The XS400J's top speed is sure to provide riders with a thrilling and exhilarating experience.
Safety: While a high top speed can be fun, it is important to remember that it also comes with increased responsibility. Riders should always wear a helmet and ride safely and responsibly, especially when riding at high speeds.
Comparison to other motorcycles: The XS400J's top speed is higher than the top speeds of many other motorcycles in its class. This makes it a good choice for riders who want a motorcycle that is both powerful and fun to ride.

Overall, the Yamaha XS400J's top speed of 112 mph (180 km/h) is a significant aspect of its performance and appeal. It is a powerful and thrilling motorcycle that is sure to provide riders with an exhilarating and enjoyable riding experience.

Fuel efficiency

The Yamaha XS400J is known for its excellent fuel efficiency, achieving 55 mpg (4.3 L/100 km). This is a significant advantage, especially for riders who commute or travel long distances. The fuel efficiency of the XS400J is due to several factors, including its lightweight design, efficient engine, and aerodynamic shape.

The lightweight design of the XS400J reduces the amount of energy required to accelerate and maintain speed. The efficient engine is designed to minimize fuel consumption, and the aerodynamic shape helps to reduce drag. As a result, the XS400J is able to achieve excellent fuel efficiency without sacrificing performance.

The fuel efficiency of the Yamaha XS400J has several practical benefits. First, it reduces the cost of ownership. Riders can save money on fuel, which can be a significant expense, especially for those who ride frequently. Second, it reduces the environmental impact of riding a motorcycle. Motorcycles that are more fuel-efficient produce fewer emissions, which helps to protect the environment.

Handling

The Yamaha XS400J is known for its neutral and responsive handling. This means that the motorcycle is easy to maneuver and control, even at high speeds. The XS400J's handling is due to several factors, including its lightweight design, well-balanced chassis, and responsive suspension.

Lightweight design: The XS400J weighs just 385 pounds, which makes it one of the lightest motorcycles in its class. This lightweight design makes the XS400J easy to maneuver and handle, especially in tight turns and at low speeds.
Well-balanced chassis: The XS400J's chassis is designed to provide a good balance between stability and agility. The motorcycle's weight is evenly distributed, which helps to prevent it from feeling top-heavy or unstable. The XS400J's chassis also has a short wheelbase, which makes it easy to turn and maneuver.
Responsive suspension: The XS400J's suspension is designed to provide a smooth and comfortable ride, even on rough roads. The front suspension consists of telescopic forks, while the rear suspension consists of dual shocks. Both the front and rear suspension are adjustable, which allows riders to fine-tune the handling of the motorcycle to their own preferences.

The combination of these factors gives the Yamaha XS400J its neutral and responsive handling. This makes the XS400J a good choice for a wide range of riders, from beginners to experienced riders. The XS400J is also a good choice for riders who want a motorcycle that is easy to maneuver and control, even in challenging riding conditions.

Brakes

The Yamaha XS400J is equipped with a front disc brake and a rear drum brake. This combination of brakes provides good stopping power and is easy to modulate. The front disc brake is particularly effective at providing strong and consistent braking, while the rear drum brake is good for providing additional braking power and stability.Here are some of the key benefits of the front disc and rear drum brake system on the Yamaha XS400J:

Strong and consistent braking: The front disc brake provides strong and consistent braking power, even in wet or slippery conditions. This is important for safety, as it allows riders to stop the motorcycle quickly and safely.
Easy to modulate: The front disc brake is easy to modulate, which means that riders can easily control the amount of braking force applied. This is important for smooth and controlled braking.
Additional braking power and stability: The rear drum brake provides additional braking power and stability, especially when braking on slippery surfaces. This is important for safety, as it helps to prevent the motorcycle from skidding or losing control.

Overall, the front disc and rear drum brake system on the Yamaha XS400J is a good combination of braking power, modulation, and stability. This makes the XS400J a safe and easy-to-ride motorcycle.

Suspension

The Yamaha XS400J features a suspension system that utilizes telescopic forks in the front and dual rear shocks. This combination provides a comfortable and controlled ride, making it suitable for various road conditions and riding styles.

Telescopic forks:
The telescopic forks in the front of the XS400J offer a smooth and responsive ride. They allow the front wheel to move up and down independently, absorbing impacts and providing stability, especially during braking and cornering.
Dual rear shocks:
The dual rear shocks provide support and stability to the rear of the motorcycle. They work in conjunction with the telescopic forks to absorb bumps and vibrations, ensuring a comfortable ride even on rough roads. The adjustable preload allows riders to fine-tune the suspension settings based on their weight and riding preferences.

The combination of telescopic forks and dual rear shocks on the Yamaha XS400J contributes to its overall handling and performance. It provides a balanced and predictable ride, allowing riders to navigate different road conditions with confidence. The adjustable suspension settings further enhance the versatility of the XS400J, making it suitable for a wide range of riding styles and preferences.

Weight

The Yamaha XS400J weighs 385 lb (175 kg), which is relatively lightweight for a motorcycle of its size and displacement. This light weight contributes to the XS400J's agility, handling, and fuel efficiency.

The light weight of the XS400J makes it easy to maneuver and handle, especially in urban environments and tight turns. It also contributes to the motorcycle's impressive fuel efficiency, as less weight requires less energy to accelerate and maintain speed.

The Yamaha XS400J's light weight is a key factor in its overall performance and appeal. It makes the motorcycle easy to ride and maneuver, while also contributing to its fuel efficiency. This combination of attributes makes the XS400J a popular choice for commuters, urban riders, and those who appreciate a lightweight and agile motorcycle.

Seat height

The Yamaha XS400J has a seat height of 30.7 in (780 mm). This is a relatively low seat height, which makes the XS400J a good choice for riders of all heights. It is also a good choice for riders who are new to riding, as a lower seat height can make it easier to control the motorcycle.

The seat height of a motorcycle is an important factor to consider when choosing a motorcycle. A motorcycle with a seat height that is too high or too low can be uncomfortable and difficult to ride. A seat height that is too high can make it difficult to reach the ground with your feet, which can be a safety hazard. A seat height that is too low can make it difficult to control the motorcycle, especially at low speeds.

The Yamaha XS400J's seat height of 30.7 in (780 mm) is a good compromise between comfort and control. It is low enough to be comfortable for most riders, but it is also high enough to provide good control. This makes the XS400J a good choice for riders of all heights and experience levels.

Fuel tank capacity

The Yamaha XS400J has a fuel tank capacity of 4.2 gal (16 L). This provides a good balance between range and weight. A larger fuel tank would increase the range of the motorcycle, but it would also increase the weight and reduce the fuel efficiency. A smaller fuel tank would reduce the range of the motorcycle, but it would also reduce the weight and improve the fuel efficiency.

Range: The fuel tank capacity of the Yamaha XS400J gives it a range of approximately 200 miles (320 km) on a single tank of gas. This is a good range for a motorcycle of its size and displacement. It is also a good range for commuting and day trips.
Weight: The fuel tank is one of the heaviest components on a motorcycle. The 4.2 gal (16 L) fuel tank on the Yamaha XS400J is a good compromise between range and weight. A larger fuel tank would increase the weight of the motorcycle, which would reduce its performance and fuel efficiency.
Fuel efficiency: The fuel efficiency of the Yamaha XS400J is 55 mpg (4.3 L/100 km). This is a good fuel efficiency for a motorcycle of its size and displacement. The 4.2 gal (16 L) fuel tank provides a good range without sacrificing fuel efficiency.
Convenience: The 4.2 gal (16 L) fuel tank on the Yamaha XS400J is a good size for convenience. It is large enough to provide a good range, but it is not so large that it is difficult to fill up.

Overall, the 4.2 gal (16 L) fuel tank capacity of the Yamaha XS400J is a good compromise between range, weight, fuel efficiency, and convenience.

Production years

The Yamaha XS400J was produced from 1976 to 1982. These production years played a significant role in shaping the motorcycle's identity, performance, and impact on the motorcycle industry.

Technological advancements: The 1970s marked a period of rapid technological advancements in the motorcycle industry. During this time, Yamaha introduced several innovations in engine design, suspension systems, and braking technologies. These advancements were incorporated into the XS400J, giving it a competitive edge over its rivals.
Market demand: The 1970s witnessed a growing demand for mid-sized, fuel-efficient motorcycles. The XS400J was designed to meet this demand, offering a combination of performance and practicality that appealed to a wide range of riders. Its production years aligned perfectly with this market trend.
Cultural impact: The XS400J became a symbol of the 1970s motorcycle culture. Its timeless design, reliability, and versatility made it a popular choice among riders of all ages and backgrounds. The motorcycle's production years coincided with the rise of motorcycle clubs and rallies, further solidifying its status as an icon of the era.
Historical significance: The XS400J played a pivotal role in establishing Yamaha as a leading manufacturer of high-quality motorcycles. Its success during its production years helped solidify Yamaha's reputation for innovation, performance, and reliability, which continues to define the brand today.

In conclusion, the production years of 1976-1982 were instrumental in shaping the Yamaha XS400J into the iconic motorcycle it remains today. The technological advancements, market demand, cultural impact, and historical significance of these years are inextricably linked to the XS400J's enduring legacy and its enduring popularity among motorcycle enthusiasts.

Frequently Asked Questions about Yamaha XS400J

The Yamaha XS400J is a classic motorcycle that enjoys a dedicated following among enthusiasts. Here are some frequently asked questions about the XS400J, answered in a comprehensive and informative manner:

Question 1: What are the key features of the Yamaha XS400J?

Answer: The Yamaha XS400J is known for its reliability, fuel efficiency, and handling. It is powered by a 398 cc parallel twin engine producing 33 horsepower. Other notable features include a 5-speed transmission, a front disc brake, and a rear drum brake.

Question 2: What is the fuel efficiency of the Yamaha XS400J?

Answer: The Yamaha XS400J has a fuel efficiency of approximately 55 mpg (4.3 L/100 km). This makes it an economical choice for everyday commuting and longer rides.

Question 3: How easy is the Yamaha XS400J to handle?

Answer: The Yamaha XS400J is known for its neutral and responsive handling. It has a lightweight design and a well-balanced chassis, making it easy to maneuver and control, even for beginners.

Question 4: What is the top speed of the Yamaha XS400J?

Answer: The Yamaha XS400J has a top speed of approximately 112 mph (180 km/h). This makes it a capable highway cruiser and provides ample power for overtaking.

Question 5: How comfortable is the Yamaha XS400J for long rides?

Answer: The Yamaha XS400J offers a reasonably comfortable riding position with a slightly upright seating posture. It has a cushioned seat and adjustable handlebars, allowing riders to find their preferred riding position.

Question 6: What are some common issues to look out for when buying a used Yamaha XS400J?

Answer: Some common issues to be aware of when buying a used Yamaha XS400J include potential carburetor problems, electrical issues, and wear and tear on the clutch and brakes. It is advisable to have the motorcycle inspected by a qualified mechanic before making a purchase.

These frequently asked questions provide a comprehensive overview of the Yamaha XS400J, addressing its key features, performance, handling, and common considerations when purchasing a used model. By understanding these aspects, potential buyers and enthusiasts can make informed decisions about the Yamaha XS400J.

Yamaha XS400J Maintenance and Performance Tips

Ensuring the optimal performance and longevity of your Yamaha XS400J requires regular maintenance and attention to detail. Here are some essential tips to keep your motorcycle running smoothly:

Tip 1: Regular Oil Changes and Filter ReplacementRegular oil changes are crucial for maintaining engine health. Use high-quality oil specifically designed for motorcycles and follow the manufacturer's recommended change intervals. Replacing the oil filter simultaneously removes impurities and ensures proper oil flow.Tip 2: Air Filter Inspection and CleaningA clean air filter allows the engine to breathe efficiently, improving performance and fuel economy. Inspect the air filter regularly for dirt and debris, and clean or replace it as needed.Tip 3: Chain MaintenanceA properly maintained chain ensures smooth power transmission and reduces wear and tear on the drivetrain. Lubricate the chain regularly with a suitable chain lubricant and adjust the tension according to the manufacturer's specifications.Tip 4: Brake Inspection and ServicingRegularly check the brake pads for wear and replace them when necessary. Inspect the brake fluid level and condition, and flush and replace it periodically to maintain optimal braking performance.Tip 5: Tire Inspection and ReplacementProper tire inflation and condition are essential for safety and handling. Inspect the tires for wear, cracks, or bulges, and replace them if needed. Maintain the recommended tire pressure to ensure optimal grip and stability.Tip 6: Carburetor TuningThe carburetor plays a vital role in air-fuel mixture and engine performance. Periodically inspect and adjust the carburetor to ensure proper fuel flow and smooth operation.Tip 7: Battery MaintenanceA healthy battery is essential for reliable starting. Keep the battery terminals clean and free of corrosion. Check the battery fluid level and top it up if necessary. Use a battery tender or trickle charger during extended periods of storage.Tip 8: General InspectionsRegularly inspect the motorcycle for any loose bolts, leaks, or unusual noises. Address any issues promptly to prevent minor problems from escalating into major ones.By following these maintenance tips, you can enhance the performance, reliability, and longevity of your Yamaha XS400J. Remember to consult the manufacturer's service manual for specific maintenance intervals and procedures.

Maintaining your Yamaha XS400J not only ensures its optimal operation but also contributes to a safer and more enjoyable riding experience. By addressing maintenance needs proactively, you can keep your motorcycle running smoothly for many years to come.

Conclusion

The Yamaha XS400J is a classic motorcycle that has stood the test of time. It is known for its reliability, fuel efficiency, and handling, making it a popular choice for commuters, beginners, and enthusiasts alike. The XS400J's unique combination of performance and practicality has solidified its place in motorcycle history.

The legacy of the Yamaha XS400J extends beyond its production years. It played a significant role in establishing Yamaha as a leading manufacturer of high-quality motorcycles. Today, the XS400J remains a sought-after motorcycle among collectors and riders who appreciate its timeless design and enduring appeal.