Kawasaki ZXR400 — OEM Fluid, Tire Pressure & Maintenance Specs
398cc Liquid-Cooled Inline-4 DOHC 16-Valve (K-CAS Ram Ducts · Inverted Fork) · Source: Kawasaki ZXR400 (1989–1999) Official Owner’s Manual Maintenance Specifications
According to the Kawasaki ZXR400 (1989–1999) Official Owner’s Manual Maintenance Specifications, the 1989–1999 Kawasaki ZXR400 (chassis ZX400H/ZX400L) requires 2.5 L (2.64 US qt) of SAE 10W-40 (JASO MA2, API SG/SJ/SL) 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 225 kPa / 2.25 bar / 33 PSI front (120/60 ZR17 55W) and 250 kPa / 2.50 bar / 36 PSI rear (160/60 ZR17 69W), paired with 4× NGK CR9EIA-9 / SILMAR9B9 spark plug(s) and a YTX9-BS / YTZ10S battery.
Drain only: 2.5 L (2.64 US qt)
R 250 kPa (2.50 bar)
Est. Range: ~288 km (179 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/SJ/SL |
| Oil Volume (Drain / With Filter / Overhaul) |
• Drain only: 2.5 L (2.64 US qt) • With filter/strainer: 3 L (3.17 US qt) • Complete dry overhaul: 3.3 L (3.49 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: 120/60 ZR17 55W · Rear: 160/60 ZR17 69W (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 / SILMAR9B9 × 4 (Gap: 0.8–0.9 mm) |
| OEM Battery Code & Rating | YTX9-BS / YTZ10S (12V 8.0–8.6Ah MF AGM) |
| Final Drive Maintenance | 525 Heavy-Duty Sealed X-Ring Chain — Maintain 25–35 mm slack and clean/lube regularly |
| Brake Fluid & Coolant | DOT 4 · Silicate-free ethylene-glycol OAT coolant for aluminum radiators (50:50 premix) |
3. Ergonomics, Range & Scheduled Service Intervals
| Displacement · Max Power · Peak Torque | 398 cc · 65 hp @ 13,000 rpm · 36.3 N·m (26.8 lb-ft) @ 12,000 rpm |
|---|---|
| Seat Height & Wet Curb Weight | 760 mm (29.9 in) · 185 kg (408 lbs) |
| Fuel Tank & Est. Real-World Range | 16 L (4.2 US gal) · ~18 km/L → ~288 km (179 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
Iconic 1990s 14,500 rpm pocket superbike famous for its over-the-tank K-CAS cooling hoses and standard inverted forks (ZX400L).
Oil & Clutch Mechanical Engineering Note
Kawasaki inline-four family (ZX-25R/4RR/6R/10R/14R, Z900/RS, Ninja 1000SX, H2) sharing filter 16097-0008 (HF303) and SAE 10W-40 JASO MA2 synthetic oil.