Kawasaki Zephyr 750 — OEM Fluid, Tire Pressure & Maintenance Specs
738cc Air-Cooled Inline-4 DOHC 8-Valve (Z2-Inspired Classic Naked Icon) · Source: Kawasaki Zephyr 750 (1991–2006) Official Owner’s Manual Maintenance Specifications
According to the Kawasaki Zephyr 750 (1991–2006) Official Owner’s Manual Maintenance Specifications, the 1991–2006 Kawasaki Zephyr 750 (chassis ZR750C/ZR750D) requires 3 L (3.17 US qt) of SAE 10W-40 (JASO MA2, API SG/SJ/SL) engine oil for a drain-only change and 3.6 L (3.80 US qt) with filter service (16099-003 / HF401). Standard solo cold tire pressure is 225 kPa / 2.25 bar / 33 PSI front (120/70-17 58H) and 250 kPa / 2.50 bar / 36 PSI rear (150/70-17 69H), paired with 4× NGK DR9EA spark plug(s) and a YTX9-BS / YTZ10S battery.
Drain only: 3 L (3.17 US qt)
R 250 kPa (2.50 bar)
Est. Range: ~315 km (196 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: 3 L (3.17 US qt) • With filter/strainer: 3.6 L (3.80 US qt) • Complete dry overhaul: 3.9 L (4.12 US qt) |
| OEM Oil Filter Code & Type | 16099-003 / HF401 |
| 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: 120/70-17 58H · Rear: 150/70-17 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: 280 kPa / 2.80 bar / 41 PSI |
| OEM Spark Plug & Quantity | NGK DR9EA × 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 · Air/Oil-Cooled Engine (No liquid coolant) |
3. Ergonomics, Range & Scheduled Service Intervals
| Displacement · Max Power · Peak Torque | 738 cc · 72 hp @ 9,500 rpm · 59 N·m (43.5 lb-ft) @ 7,300 rpm |
|---|---|
| Seat Height & Wet Curb Weight | 780 mm (30.7 in) · 218 kg (481 lbs) |
| Fuel Tank & Est. Real-World Range | 17 L (4.5 US gal) · ~18.5 km/L → ~315 km (196 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
90s Japanese naked-bike icon inheriting Z650 air-cooled inline-four lineage; cast-wheel C models are tubeless while spoke-wheel RS (D) models use tubes.
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.