Yamaha DragStar 400 / Classic 400 (VH01J / VH02J) — OEM Fluid, Tire Pressure & Maintenance Specs
399cc Air-Cooled 70-Degree V-Twin SOHC 4-Valve (Shaft Drive) · Source: Yamaha DragStar 400 / Classic 400 (VH01J / VH02J) (1996–2017) Official Owner’s Manual Maintenance Specifications
According to the Yamaha DragStar 400 / Classic 400 (VH01J / VH02J) (1996–2017) Official Owner’s Manual Maintenance Specifications, the 1996–2017 Yamaha DragStar 400 / Classic 400 (VH01J / VH02J) (chassis 4TR/VH01J/VH02J) requires 2.6 L (2.75 US qt) of SAE 10W-40 (JASO MA2, API SG or higher) engine oil for a drain-only change and 2.8 L (2.96 US qt) with filter service (4X7-13440-90 / HF145). Standard solo cold tire pressure is 200 kPa / 2.00 bar / 29 PSI front (100/90-19M/C 57S) and 225 kPa / 2.25 bar / 33 PSI rear (170/80-15M/C 77S), paired with 2× NGK DPR7EA-9 spark plug(s) and a YT12B-BS battery.
Drain only: 2.6 L (2.75 US qt)
R 225 kPa (2.25 bar)
Est. Range: ~345 km (214 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 20W-50) · JASO MA2 · API SG or higher |
| Oil Volume (Drain / With Filter / Overhaul) |
• Drain only: 2.6 L (2.75 US qt) • With filter/strainer: 2.8 L (2.96 US qt) • Complete dry overhaul: 3.2 L (3.38 US qt) |
| OEM Oil Filter Code & Type | 4X7-13440-90 / HF145 |
| 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 | 43 N·m (31.7 lb-ft / 4.38 kgf·m) — Use fresh crush washer |
| Final Drive / Bevel Gear Oil | 190 ml (0.19 L) — SAE 80W-90 Hypoid Gear Oil GL-5 (190 ml shaft drive) |
2. Cold Tire Pressures, Wheels, Ignition & Drivetrain
| Front / Rear OEM Tire Sizes | Front: 100/90-19M/C 57S · Rear: 170/80-15M/C 77S (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 DPR7EA-9 × 2 (Gap: 0.8–0.9 mm) |
| OEM Battery Code & Rating | YT12B-BS (12V 10.0Ah MF AGM) |
| Final Drive Maintenance | Enclosed Shaft Drive — Replace hypoid final-drive gear oil (SAE 80W-90 GL-5) on schedule |
| Brake Fluid & Coolant | DOT 4 · Air-Cooled 70-Degree V-Twin Engine (No liquid coolant) |
3. Ergonomics, Range & Scheduled Service Intervals
| Displacement · Max Power · Peak Torque | 399 cc · 30 hp @ 7,500 rpm · 31 N·m (22.9 lb-ft) @ 6,000 rpm |
|---|---|
| Seat Height & Wet Curb Weight | 660 mm (26.0 in) · 234 kg (516 lbs) |
| Fuel Tank & Est. Real-World Range | 15 L (4.0 US gal) · ~23 km/L → ~345 km (214 mi) |
| OEM Scheduled Maintenance Intervals |
• First Break-In: 1,000 km • Engine Oil / Filter: 8,000 km / 16,000 km • Air Filter / Spark Plug: 20,000 km / 16,000 km • Valve Clearance Check: 26,000 km |
4. Generation Cutoffs & Real-World Wrenching Gotchas
Model-Year & Chassis Generation Notes
Built across carbureted 4TR/VH01J (1996–2008) and fuel-injected VH02J (2010–2017) eras in custom 19-inch front and 16-inch fat-fender Classic trims.
Oil & Clutch Mechanical Engineering Note
Refill 2.8 L with internal paper element HF145 (2.6 L drain) of SAE 10W-40 JASO MA2 oil plus 190 ml SAE 80W-90 shaft gear oil; mind exhaust clearance on the filter cover.