Kawasaki Z900RS / Z900RS SE (ZR900) — OEM Fluid, Tire Pressure & Maintenance Specs
948cc Liquid-Cooled Inline-Four DOHC 16-Valve Retro Sport (Assist & Slipper Wet Clutch) · Source: Kawasaki Z900RS / SE (ZR900) Official Owner’s Manual Maintenance Specifications
According to the Kawasaki Z900RS / SE (ZR900) Official Owner’s Manual Maintenance Specifications, the 2018–Present Kawasaki Z900RS / Z900RS SE (ZR900) (chassis ZR900C/ZR900K) requires 3.3 L (3.49 US qt) of SAE 10W-40 (JASO MA2, API SG/SH/SJ/SL/SM) engine oil for a drain-only change and 3.8 L (4.02 US qt) with filter service (16097-0008 / HF303). Standard solo cold tire pressure is 250 kPa / 2.50 bar / 36 PSI front (120/70ZR17 M/C (58W)) and 290 kPa / 2.90 bar / 42 PSI rear (180/55ZR17 M/C (73W)), paired with 4× NGK CR9EIA-9 spark plug(s) and a YTZ10S / YTX9-BS battery.
Drain only: 3.3 L (3.49 US qt)
R 290 kPa (2.90 bar)
Est. Range: ~320 km (199 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: 3.3 L (3.49 US qt) • With filter/strainer: 3.8 L (4.02 US qt) • Complete dry overhaul: 4.2 L (4.44 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: 120/70ZR17 M/C (58W) · Rear: 180/55ZR17 M/C (73W) (Tubeless) |
|---|---|
| Cold Tire Pressure — Solo Riding |
Front: 250 kPa / 2.50 bar / 36 PSI Rear: 290 kPa / 2.90 bar / 42 PSI |
| Cold Tire Pressure — 2-Up / Loaded Touring |
Front: 250 kPa / 2.50 bar / 36 PSI Rear: 290 kPa / 2.90 bar / 42 PSI |
| OEM Spark Plug & Quantity | NGK CR9EIA-9 × 4 (Gap: 0.8–0.9 mm (Iridium)) |
| OEM Battery Code & Rating | YTZ10S / YTX9-BS (12V 8.6Ah MF AGM) |
| Final Drive Maintenance | 525 Sealed Chain (114 links) — Slack 20–30 mm on sidestand |
| Brake Fluid & Coolant | DOT 4 · Kawasaki Aluma-Cool Ethylene Glycol Coolant (~2.3 L) |
3. Ergonomics, Range & Scheduled Service Intervals
| Displacement · Max Power · Peak Torque | 948 cc · 111 hp @ 8,500 rpm · 98.5 N·m (72.6 lb-ft) @ 6,500 rpm |
|---|---|
| Seat Height & Wet Curb Weight | 835 mm (32.9 in) · 215 kg (474 lbs) |
| Fuel Tank & Est. Real-World Range | 17 L (4.5 US gal) · ~18.8 km/L → ~320 km (199 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: 42,000 km |
4. Generation Cutoffs & Real-World Wrenching Gotchas
Model-Year & Chassis Generation Notes
Standard, Cafe, and Öhlins/Brembo SE variants all share the exact 948cc inline-four engine (3.3 L drain / 3.8 L with HF303 filter, four NGK CR9EIA-9 plugs). Note Asian-spec seats sit at 800 mm vs 835 mm on Euro/US seats.
Oil & Clutch Mechanical Engineering Note
With a 3.8 L (4.0 US qt) filter-change refill, one 4-liter jug of full-synthetic SAE 10W-40 JASO MA2 covers the oil change cleanly with 200 ml to spare.
Garage Wrenching Gotchas
- Z900RS SE models run Brembo M4.32 calipers instead of standard Nissin calipers—verify Brembo vs Nissin pad backing plates before ordering front brake pads!
- After installing a dry spin-on filter, idle for 30 seconds until the oil warning lamp extinguishes, shut down for 3 minutes, and verify the level sits mid-window.
5. Frequently Asked Questions (FAQ)
How much engine oil does the Kawasaki Z900RS take with filter replacement?
Oil-only drain takes 3.3 L (3.5 US qt), and oil plus spin-on filter replacement requires 3.8 L (4.0 US qt).
What is the factory cold tire pressure for the Kawasaki Z900RS?
Cold inflation pressures are 250 kPa (36 PSI) front and 290 kPa (42 PSI) rear.
What spark plugs and valve interval does the Z900RS specify?
It uses four NGK CR9EIA-9 iridium plugs and boasts a generous 42,000 km (26,250 mi) valve-clearance inspection interval.