Honda CB400SF Hyper VTEC Spec III (NC39) — OEM Fluid, Tire Pressure & Maintenance Specs
399cc Liquid-Cooled Inline-4 DOHC 16V Quad-Carb Hyper VTEC · Source: Honda CB400SF Hyper VTEC Spec III (NC39) (2004–2007) Official Owner’s Manual Maintenance Specifications
According to the Honda CB400SF Hyper VTEC Spec III (NC39) (2004–2007) Official Owner’s Manual Maintenance Specifications, the 2004–2007 Honda CB400SF Hyper VTEC Spec III (NC39) (chassis NC39) requires 3.1 L (3.28 US qt) of SAE 10W-30 (JASO MA, API SG/SJ or higher) engine oil for a drain-only change and 3.3 L (3.49 US qt) with filter service (15410-MCJ-000 / HF204). Standard solo cold tire pressure is 250 kPa / 2.50 bar / 36 PSI front (120/60ZR17 M/C (55W)) and 290 kPa / 2.90 bar / 42 PSI rear (160/60ZR17 M/C (69W)), paired with 4× NGK CR8EH-9 spark plug(s) and a YTZ10S battery.
Drain only: 3.1 L (3.28 US qt)
R 290 kPa (2.90 bar)
Est. Range: ~351 km (218 mi)
1. Engine Lubrication, Filter & Clutch Specifications
| Clutch Architecture | Wet Multi-Plate Manual Clutch NEVER use JASO MB |
|---|---|
| Recommended Viscosity & Grade | SAE 10W-30 (Alt: SAE 10W-40) · JASO MA · API SG/SJ or higher |
| Oil Volume (Drain / With Filter / Overhaul) |
• Drain only: 3.1 L (3.28 US qt) • With filter/strainer: 3.3 L (3.49 US qt) • Complete dry overhaul: 3.8 L (4.02 US qt) |
| OEM Oil Filter Code & Type | 15410-MCJ-000 / HF204 |
| 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: 120/60ZR17 M/C (55W) · Rear: 160/60ZR17 M/C (69W) (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 CR8EH-9 × 4 (Gap: 0.8–0.9 mm) |
| OEM Battery Code & Rating | YTZ10S (12V 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 | 399 cc · 53 hp @ 11,000 rpm · 38 N·m (28.0 lb-ft) @ 9,500 rpm |
|---|---|
| Seat Height & Wet Curb Weight | 755 mm (29.7 in) · 194 kg (428 lbs) |
| Fuel Tank & Est. Real-World Range | 18 L (4.8 US gal) · ~19.5 km/L → ~351 km (218 mi) |
| OEM Scheduled Maintenance Intervals |
• First Break-In: 1,000 km • Engine Oil / Filter: 10,000 km / 20,000 km • Air Filter / Spark Plug: 18,000 km / 20,000 km • Valve Clearance Check: 24,000 km |
4. Generation Cutoffs & Real-World Wrenching Gotchas
Model-Year & Chassis Generation Notes
Final carbureted NC39 evolution splitting VTEC engagement between 6,300 rpm (gears 1–5) and 6,750 rpm (6th gear) with CBR-style LED tail optics before fuel-injected NC42.
Oil & Clutch Mechanical Engineering Note
Honda Hyper VTEC 399cc inline-four using engine oil pressure to actuate 2-to-4-valve VTEC pins—making clean SAE 10W-30/10W-40 JASO MA oil (3.2 L w/ filter) critical.