| Specification | Value |
|---|---|
| Model Year | 2016 |
| Engine Oil | SAE 10W-40 (1.8 L) |
| Tires (F/R) | 120/70 R18 / 160/60 R17 |
| Tire Pressure (F/R) | 32 psi / 36 psi |
| Battery | FTX12-BS |
| Spark Plug | NGK CR9EIA-9 |
Engineering Highlight: The Parallel-Twin Paradigm Shift
The 2016 Kawasaki Vulcan S (EN650AGF) stands as a masterclass in engineering subversion. Unlike traditional cruisers that rely on heavy V-twin architectures, the Vulcan S utilizes a high-tensile steel perimeter frame paired with a liquid-cooled 649cc parallel-twin engine derived from the Ninja 650. This choice was not merely for cost-efficiency; it allowed Kawasaki engineers to achieve a significantly lower center of gravity and a narrower chassis profile, resulting in a cruiser with the flickability of a sport-standard.
Technical Performance Analysis
The EN650AGF power plant is tuned for low-to-mid-range torque, featuring revised camshaft profiles and a heavier flywheel compared to its Ninja cousin. This provides the smooth roll-on power expected in a cruiser while maintaining a high-revving ceiling. The offset laydown single-shock rear suspension with linkage is another technical standout, offering 3.1 inches of travel and 7-way preload adjustability to compensate for various rider weights and cargo loads.
Maintenance Guide & Fluid Specifications
Maintaining the Vulcan S requires precision, particularly regarding its cooling and lubrication systems. The engine requires 1.8 liters of 10W-40 oil meeting JASO MA/MA1/MA2 standards to ensure the wet clutch operates without slippage.
- Ignition System: The NGK CR9EIA-9 Iridium plugs are critical for maintaining the efficiency of the Digital Fuel Injection (DFI) system.
- Electrical: The FTX12-BS battery provides the necessary cold-cranking amps for the high-compression twin.
- Chassis: Tire pressures must be strictly maintained at 2.25 bar (Front) and 2.5 bar (Rear) to preserve the unique handling characteristics provided by the 18-inch front wheel.
Frequently Asked Questions
What oil should I use in my 2016 Vulcan S?
Kawasaki recommends SAE 10W-40 with API ratings of SG, SH, SJ, SL, or SM, and JASO MA/MA1/MA2 compatibility. The total capacity is 1.8 Liters.
How often should I check the tire pressure?
For optimal safety and tire longevity, check pressures weekly. The front should be 32 psi and the rear 36 psi.
What battery fits the EN650AGF?
The standard replacement battery is the FTX12-BS maintenance-free lead-acid battery.