| Component | Specification |
|---|---|
| Production Years | 2003 – 2006 |
| Engine Oil | SAE 10W-40 (JASO MA) – 2.0 Liters |
| Front Tire | 110/90-13 M/C 56P |
| Rear Tire | 130/70-13 M/C 63P |
| Battery | YT12A-BS |
| Spark Plug | NGK CR7E |
The Engineering Legacy: A Pioneer in Link-Type Suspension
The Suzuki AN 400 Burgman (WVAU generation) holds a unique place in motorcycling history as the machine that successfully redefined the “Maxi-Scooter” segment. While its competitors were still utilizing basic twin-shock setups, the WVAU featured a sophisticated link-type rear suspension. This engineering choice allowed for progressive damping and a lower center of gravity, effectively bridging the handling gap between a step-through scooter and a mid-sized touring motorcycle.
Engine & Powertrain Analysis
At the heart of the WVAU is a 385cc liquid-cooled, single-cylinder engine. This era saw the introduction of fuel injection to the 400 series, significantly improving cold-start reliability and throttle linearity. The CVT (Continuously Variable Transmission) is tuned for a balance of urban agility and low-RPM highway cruising. To maintain peak performance, the engine requires 2.0 liters of SAE 10W-40 oil. At MotoSpecsLab, we recommend strictly adhering to JASO MA standards to ensure the longevity of internal components, despite the lack of a wet clutch in the traditional sense.
Maintenance Essentials
For the DIY mechanic, the Burgman 400 WVAU is relatively accessible, though bodywork removal remains the primary hurdle. The electrical system relies on the YT12A-BS battery, which must be kept at a full charge to support the fuel injection system’s initial prime. Ignition is handled by the NGK CR7E spark plug; we recommend inspecting the gap every 6,000 km to prevent coil stress.
Chassis, Tires, and Safety
The WVAU utilizes a 13-inch wheel configuration both front and rear. Tire pressure is critical for handling stability on this model due to its long wheelbase. The front 110/90-13 should be maintained at 1.75 bar (25 psi). For the rear 130/70-13, pressure varies significantly based on load: 2.0 bar (29 psi) for solo riding, increasing to 2.5 bar (36 psi) when carrying a passenger or heavy luggage.
MotoSpecsLab Editorial Verdict
The 2003-2006 Suzuki Burgman 400 remains a gold standard for riders seeking a “do-it-all” platform. Its mechanical robustness is legendary, provided the cooling system and CVT belt are inspected regularly. It offers a level of weather protection and storage (55 liters) that few modern successors have significantly improved upon.
Frequently Asked Questions (FAQ)
Q: How often should I change the oil?
A: While Suzuki suggests longer intervals, MotoSpecsLab recommends an oil and filter change every 5,000 km given the high-revving nature of the single-cylinder engine.
Q: Can I use automotive 10W-40 oil?
A: No. Always use oil with a JASO MA or MA2 rating to ensure the additives are compatible with the engine’s internal seals and high-temperature operating environment.