Yamaha WR125R / WR125X (DE07 FI) — OEM Fluid, Tire Pressure & Maintenance Specs
124cc Liquid-Cooled Single SOHC 4-Valve FI Minarelli Engine · Source: Yamaha WR125R / WR125X (DE07 FI) (2009–2016) Official Owner’s Manual Maintenance Specifications
According to the Yamaha WR125R / WR125X (DE07 FI) (2009–2016) Official Owner’s Manual Maintenance Specifications, the 2009–2016 Yamaha WR125R / WR125X (DE07 FI) (chassis DE07/22B) requires 0.95 L (1.00 US qt) of SAE 10W-40 (JASO MA2, API SG or higher) engine oil for a drain-only change and 1 L (1.06 US qt) with filter service (1S7-E3440-00 / HF141). Standard solo cold tire pressure is 150 kPa / 1.50 bar / 22 PSI front (80/90-21M/C 48P) and 175 kPa / 1.75 bar / 25 PSI rear (110/80-18M/C 58P), paired with 1× NGK MR8E-9 spark plug(s) and a YTZ6V / YTX7L-BS battery.
Drain only: 0.95 L (1.00 US qt)
R 175 kPa (1.75 bar)
Est. Range: ~323 km (201 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 SG or higher |
| Oil Volume (Drain / With Filter / Overhaul) |
• Drain only: 0.95 L (1.00 US qt) • With filter/strainer: 1 L (1.06 US qt) • Complete dry overhaul: 1.15 L (1.22 US qt) |
| OEM Oil Filter Code & Type | 1S7-E3440-00 / HF141 |
| Correct Oil Level Check Method | Hold upright on level ground; rest dipstick UNTHREADED on filler neck (do NOT screw in) |
| Oil Drain Bolt Torque | 20 N·m (14.8 lb-ft / 2.04 kgf·m) — Use fresh crush washer |
2. Cold Tire Pressures, Wheels, Ignition & Drivetrain
| Front / Rear OEM Tire Sizes | Front: 80/90-21M/C 48P · Rear: 110/80-18M/C 58P (Tube-Type Spoke Rim) |
|---|---|
| Cold Tire Pressure — Solo Riding |
Front: 150 kPa / 1.50 bar / 22 PSI Rear: 175 kPa / 1.75 bar / 25 PSI |
| Cold Tire Pressure — 2-Up / Loaded Touring |
Front: 175 kPa / 1.75 bar / 25 PSI Rear: 200 kPa / 2.00 bar / 29 PSI |
| OEM Spark Plug & Quantity | NGK MR8E-9 × 1 (Gap: 0.8–0.9 mm) |
| OEM Battery Code & Rating | YTZ6V / YTX7L-BS (12V 5.0–6.0Ah MF AGM) |
| Final Drive Maintenance | 428 Drive Chain — Maintain 20–30 mm slack and lubricate 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 | 124 cc · 15 hp @ 9,000 rpm · 12.2 N·m (9.0 lb-ft) @ 8,000 rpm |
|---|---|
| Seat Height & Wet Curb Weight | 930 mm (36.6 in) · 133 kg (293 lbs) |
| Fuel Tank & Est. Real-World Range | 8.5 L (2.2 US gal) · ~38 km/L → ~323 km (201 mi) |
| OEM Scheduled Maintenance Intervals |
• First Break-In: 1,000 km • Engine Oil / Filter: 3,000 km / 6,000 km • Air Filter / Spark Plug: 12,000 km / 9,000 km • Valve Clearance Check: 12,000 km |
4. Generation Cutoffs & Real-World Wrenching Gotchas
Model-Year & Chassis Generation Notes
Built in Europe from 2009 to 2016 with the pre-VVA Minarelli 4-valve FI single, DE07 offered full-size 930 mm ergos as the 21/18-inch WR125R and 17-inch WR125X supermoto.
Oil & Clutch Mechanical Engineering Note
Powered by the Minarelli-built liquid-cooled 4-valve single, refill 1.0 L with paper element HF141 (0.95 L drain-only) of SAE 10W-40 JASO MA2 oil.