Suzuki TU250X (ST250 / Volty) — OEM Fluid, Tire Pressure & Maintenance Specs
249cc Air-Cooled Single SOHC (SCEM Cylinder · Classic Spoke-Wheel Standard) · Source: Suzuki TU250X (ST250 / Volty) (1995–2019) Official Owner’s Manual Maintenance Specifications
According to the Suzuki TU250X (ST250 / Volty) (1995–2019) Official Owner’s Manual Maintenance Specifications, the 1995–2019 Suzuki TU250X (ST250 / Volty) (chassis NJ47A/NJ4AA/NJ4CA) requires 1.3 L (1.37 US qt) of SAE 10W-40 (JASO MA2, API SJ/SL/SM) engine oil for a drain-only change and 1.4 L (1.48 US qt) with filter service (16510-38240 / HF136). Standard solo cold tire pressure is 175 kPa / 1.75 bar / 25 PSI front (90/90-18 M/C 51S) and 200 kPa / 2.00 bar / 29 PSI rear (110/90-18 M/C 61S), paired with 1× NGK MR8E-9 / CR8E spark plug(s) and a YTX7L-BS / YTX9-BS battery.
Drain only: 1.3 L (1.37 US qt)
R 200 kPa (2.00 bar)
Est. Range: ~420 km (261 mi)
1. Engine Lubrication, Filter & Clutch Specifications
| Clutch Architecture | Wet Multi-Plate Manual Clutch NEVER use JASO MB |
|---|---|
| Recommended Viscosity & Grade | SAE 10W-40 · JASO MA2 · API SJ/SL/SM |
| Oil Volume (Drain / With Filter / Overhaul) |
• Drain only: 1.3 L (1.37 US qt) • With filter/strainer: 1.4 L (1.48 US qt) • Complete dry overhaul: 1.7 L (1.80 US qt) |
| OEM Oil Filter Code & Type | 16510-38240 / HF136 |
| 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 | 21 N·m (15.5 lb-ft / 2.14 kgf·m) — Use fresh crush washer |
2. Cold Tire Pressures, Wheels, Ignition & Drivetrain
| Front / Rear OEM Tire Sizes | Front: 90/90-18 M/C 51S · Rear: 110/90-18 M/C 61S (Tube-Type Spoke Rim) |
|---|---|
| Cold Tire Pressure — Solo Riding |
Front: 175 kPa / 1.75 bar / 25 PSI Rear: 200 kPa / 2.00 bar / 29 PSI |
| Cold Tire Pressure — 2-Up / Loaded Touring |
Front: 175 kPa / 1.75 bar / 25 PSI Rear: 225 kPa / 2.25 bar / 33 PSI |
| OEM Spark Plug & Quantity | NGK MR8E-9 / CR8E × 1 (Gap: 0.8–0.9 mm) |
| OEM Battery Code & Rating | YTX7L-BS / YTX9-BS (12V 6.0–8.0Ah MF AGM) |
| Final Drive Maintenance | 520 Sealed O/X-Ring Chain — Maintain 25–35 mm slack and lube every 800–1,000 km |
| Brake Fluid & Coolant | DOT 4 · Air/Oil-Cooled Engine (No liquid coolant) |
3. Ergonomics, Range & Scheduled Service Intervals
| Displacement · Max Power · Peak Torque | 249 cc · 19 hp @ 7,500 rpm · 21 N·m (15.5 lb-ft) @ 6,000 rpm |
|---|---|
| Seat Height & Wet Curb Weight | 770 mm (30.3 in) · 148 kg (326 lbs) |
| Fuel Tank & Est. Real-World Range | 12 L (3.2 US gal) · ~35 km/L → ~420 km (261 mi) |
| OEM Scheduled Maintenance Intervals |
• First Break-In: 1,000 km • Engine Oil / Filter: 5,000 km / 10,000 km • Air Filter / Spark Plug: 12,000 km / 10,000 km • Valve Clearance Check: 12,000 km |
4. Generation Cutoffs & Real-World Wrenching Gotchas
Model-Year & Chassis Generation Notes
Timeless retro single evolving from the Volty into the fuel-injected 2009–2019 TU250X / ST250 (NJ4CA) with internal paper filter HF136.
Oil & Clutch Mechanical Engineering Note
Suzuki 125–250cc lightweight manual-clutch platform (GSX-R/S125, V-Strom 250SX, TU250X) running SAE 10W-40 JASO MA2 oil.