Kawasaki Vulcan S 650 (EN650) — OEM Fluid, Tire Pressure & Maintenance Specs
649cc Liquid-Cooled Parallel-Twin DOHC 8-Valve ERGO-FIT Sport Cruiser (Wet Multi-Plate) · Source: Kawasaki Vulcan S 650 (EN650) Official Owner’s Manual Maintenance Specifications
According to the Kawasaki Vulcan S 650 (EN650) Official Owner’s Manual Maintenance Specifications, the 2015–Present Kawasaki Vulcan S 650 (EN650) (chassis EN650B/EN650D/EN650G) requires 1.8 L (1.90 US qt) of SAE 10W-40 (JASO MA2, API SG/SH/SJ/SL/SM) engine oil for a drain-only change and 2.1 L (2.22 US qt) with filter service (16097-0008 / HF303). Standard solo cold tire pressure is 225 kPa / 2.25 bar / 33 PSI front (120/70R18 M/C 59H) and 250 kPa / 2.50 bar / 36 PSI rear (160/60R17 M/C 69H), paired with 2× NGK CR9EIA-9 spark plug(s) and a YTZ10S / YTX12-BS battery.
Drain only: 1.8 L (1.90 US qt)
R 250 kPa (2.50 bar)
Est. Range: ~308 km (191 mi)
1. Engine Lubrication, Filter & Clutch Specifications
| Clutch Architecture | Wet Multi-Plate Manual Clutch NEVER use JASO MB |
|---|---|
| Recommended Viscosity & Grade | SAE 10W-40 (Alt: SAE 10W-50) · JASO MA2 · API SG/SH/SJ/SL/SM |
| Oil Volume (Drain / With Filter / Overhaul) |
• Drain only: 1.8 L (1.90 US qt) • With filter/strainer: 2.1 L (2.22 US qt) • Complete dry overhaul: 2.3 L (2.43 US qt) |
| OEM Oil Filter Code & Type | 16097-0008 / HF303 |
| Correct Oil Level Check Method | Hold bike upright on level ground 3–5 min after warm shutdown; read crankcase sight glass |
| Oil Drain Bolt Torque | 30 N·m (22.1 lb-ft / 3.06 kgf·m) — Use fresh crush washer |
2. Cold Tire Pressures, Wheels, Ignition & Drivetrain
| Front / Rear OEM Tire Sizes | Front: 120/70R18 M/C 59H · Rear: 160/60R17 M/C 69H (Tubeless) |
|---|---|
| Cold Tire Pressure — Solo Riding |
Front: 225 kPa / 2.25 bar / 33 PSI Rear: 250 kPa / 2.50 bar / 36 PSI |
| Cold Tire Pressure — 2-Up / Loaded Touring |
Front: 225 kPa / 2.25 bar / 33 PSI Rear: 250 kPa / 2.50 bar / 36 PSI |
| OEM Spark Plug & Quantity | NGK CR9EIA-9 × 2 (Gap: 0.8–0.9 mm (Iridium)) |
| OEM Battery Code & Rating | YTZ10S / YTX12-BS (12V 8.6Ah–10.0Ah MF AGM) |
| Final Drive Maintenance | 520 Sealed O-Ring Chain (120 links, 15T/46T) — Maintain 20–30 mm slack |
| Brake Fluid & Coolant | DOT 4 · Kawasaki Aluma-Cool Ethylene Glycol Coolant (~1.8 L) |
3. Ergonomics, Range & Scheduled Service Intervals
| Displacement · Max Power · Peak Torque | 649 cc · 61 hp @ 7,500 rpm · 62.4 N·m (46.0 lb-ft) @ 6,600 rpm |
|---|---|
| Seat Height & Wet Curb Weight | 705 mm (27.8 in) · 229 kg (505 lbs) |
| Fuel Tank & Est. Real-World Range | 14 L (3.7 US gal) · ~22 km/L → ~308 km (191 mi) |
| OEM Scheduled Maintenance Intervals |
• First Break-In: 1,000 km • Engine Oil / Filter: 12,000 km / 12,000 km • Air Filter / Spark Plug: 18,000 km / 12,000 km • Valve Clearance Check: 24,000 km |
4. Generation Cutoffs & Real-World Wrenching Gotchas
Model-Year & Chassis Generation Notes
Powered by a heavier-flywheel tune of the Ninja 650 / Versys 650 parallel-twin rather than an air-cooled V-twin, the EN650 Vulcan S added a gear indicator in 2017 and Euro 5 emissions updates while keeping identical oil, filter, and tire specs.
Oil & Clutch Mechanical Engineering Note
Its compact semi-dry-sump lower pan holds only ~1.8 L drain-only and ~2.1 L with an HF303 filter (2.3 L completely dry)—pour 1.9 L first, warm-idle, and top carefully to the sight-glass midpoint to avoid overfilling.
Garage Wrenching Gotchas
- When sliding the 3-position ERGO-FIT footpegs forward or back by 25 mm, you must install the matching Extended-Reach or Reduced-Reach shift linkage rod so the toe shifter angle stays ergonomic.
- Use the toolkit C-spanner on the right-side offset laydown monoshock (7-step cam preload) whenever carrying a passenger so the low 130 mm chassis does not bottom over bumps.
5. Frequently Asked Questions (FAQ)
How much oil does the Kawasaki Vulcan S 650 require with a filter change?
Service refill is ~1.8 L without filter and ~2.1 L (2.2 US qt) with spin-on filter 16097-0008 / HF303 (2.3 L dry rebuild).
What tire sizes and cold tire pressures fit the Kawasaki Vulcan S?
Wearing sporty 120/70R18 front and 160/60R17 rear radial tires, cold inflation is 225 kPa (33 PSI) front and 250 kPa (36 PSI) rear.
How does Kawasaki ERGO-FIT adapt the Vulcan S to short and tall riders?
Combining its low 705 mm seat with 3-position adjustable footpegs plus Reduced-Reach and Extended-Reach seats and handlebars, it fits riders from ~155 cm to over 190 cm.