Kawasaki W800 / Street / Cafe (EJ800) — OEM Fluid, Tire Pressure & Maintenance Specs
773cc Air-Cooled Vertical-Twin SOHC 8-Valve Bevel-Gear Cam Drive 360° Crank (Wet Slipper) · Source: Kawasaki W800 / Street / Cafe (EJ800) Official Owner’s Manual Maintenance Specifications
According to the Kawasaki W800 / Street / Cafe (EJ800) Official Owner’s Manual Maintenance Specifications, the 2019–Present Kawasaki W800 / Street / Cafe (EJ800) (chassis EJ800B/EJ800D/EJ800E) requires 2.7 L (2.85 US qt) of SAE 10W-40 (JASO MA2, API SG/SH/SJ/SL/SM) engine oil for a drain-only change and 3 L (3.17 US qt) with filter service (16097-0008 / HF303). Standard solo cold tire pressure is 200 kPa / 2.00 bar / 29 PSI front (100/90-19 M/C 57H) and 225 kPa / 2.25 bar / 33 PSI rear (130/80-18 M/C 66H), paired with 2× NGK CR8E spark plug(s) and a YTX12-BS battery.
Drain only: 2.7 L (2.85 US qt)
R 225 kPa (2.25 bar)
Est. Range: ~323 km (201 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 / SAE 15W-50 (혹서기 공랭 열관리)) · JASO MA2 · API SG/SH/SJ/SL/SM |
| Oil Volume (Drain / With Filter / Overhaul) |
• Drain only: 2.7 L (2.85 US qt) • With filter/strainer: 3 L (3.17 US qt) • Complete dry overhaul: 3.2 L (3.38 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 | 29 N·m (21.4 lb-ft / 2.96 kgf·m) — Use fresh crush washer |
2. Cold Tire Pressures, Wheels, Ignition & Drivetrain
| Front / Rear OEM Tire Sizes | Front: 100/90-19 M/C 57H · Rear: 130/80-18 M/C 66H (Tube-Type Spoke Rim) |
|---|---|
| Cold Tire Pressure — Solo Riding |
Front: 200 kPa / 2.00 bar / 29 PSI Rear: 225 kPa / 2.25 bar / 33 PSI |
| Cold Tire Pressure — 2-Up / Loaded Touring |
Front: 200 kPa / 2.00 bar / 29 PSI Rear: 250 kPa / 2.50 bar / 36 PSI |
| OEM Spark Plug & Quantity | NGK CR8E × 2 (Gap: 0.7–0.8 mm) |
| OEM Battery Code & Rating | YTX12-BS (12V 10.0Ah MF AGM) |
| Final Drive Maintenance | 520 Sealed O-Ring Chain (104 links, 15T/37T) — Maintain 20–30 mm slack |
| Brake Fluid & Coolant | DOT 4 · Pure Air-Cooled Vertical-Twin (No coolant — bevel-gear cam tower lubricated by engine oil) |
3. Ergonomics, Range & Scheduled Service Intervals
| Displacement · Max Power · Peak Torque | 773 cc · 48 hp @ 6,000 rpm · 62.9 N·m (46.4 lb-ft) @ 4,800 rpm |
|---|---|
| Seat Height & Wet Curb Weight | 790 mm (31.1 in) · 226 kg (498 lbs) |
| Fuel Tank & Est. Real-World Range | 15 L (4.0 US gal) · ~21.5 km/L → ~323 km (201 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: 12,000 km |
4. Generation Cutoffs & Real-World Wrenching Gotchas
Model-Year & Chassis Generation Notes
Reborn in 2019 (EJ800B–E) with a stiffer frame, rear disc brake with ABS, LED headlight, and Assist & Slipper clutch (unlike 2011–2016 drum-rear EJ800A models); classic chrome W800 runs a 19-inch front wheel with standard centerstand, while Street/Cafe trims run 18-inch fronts.
Oil & Clutch Mechanical Engineering Note
Engine oil climbs the vertical shaft tower to lubricate precision spiral bevel gears driving the overhead camshaft; use high-film-strength SAE 10W-40 or summer 10W-50 JASO MA2 synthetic (3.0 L with HF303 filter, 2.7 L drain-only).
Garage Wrenching Gotchas
- All W800 wire-spoke wheels (both 19/18 Classic and 18/18 Street/Cafe) run inner tubes—tubeless plug kits will not seal a puncture on the road!
- Warm the air-cooled 360-degree twin gently for a minute before revving cold so thick cold-oil pressure spikes do not weep past the bevel-tower O-rings.
5. Frequently Asked Questions (FAQ)
How much engine oil does the Kawasaki W800 take with filter replacement?
Drain-only refill is 2.7 L (2.9 US qt), and oil plus spin-on filter 16097-0008 / HF303 takes 3.0 L (3.2 US qt).
What is the recommended cold tire pressure for the Kawasaki W800?
Set 200 kPa (29 PSI) front and 225 kPa (33 PSI) rear solo, or 250 kPa (36 PSI) rear when carrying a passenger.
How does the W800’s 360-degree bevel-drive twin feel compared to 270-degree twins?
Its 360-degree even-firing pistons rise and fall together for a vintage 1960s cadence, accompanied by the unmistakable mechanical whirr of its bevel-gear cam tower.