Yamaha XTZ125E (Dual-Sport Air-Cooled) — OEM Fluid, Tire Pressure & Maintenance Specs
124cc Air-Cooled Single SOHC 2-Valve Counterbalanced 5-Speed · Source: Yamaha XTZ125E (Dual-Sport Air-Cooled) (2003–2022) Official Owner’s Manual Maintenance Specifications
According to the Yamaha XTZ125E (Dual-Sport Air-Cooled) (2003–2022) Official Owner’s Manual Maintenance Specifications, the 2003–2022 Yamaha XTZ125E (Dual-Sport Air-Cooled) (chassis 5RM/1SB/21D) requires 1 L (1.06 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 (5VL-E3411-00 (Strainer Screen)). Standard solo cold tire pressure is 150 kPa / 1.50 bar / 22 PSI front (80/90-21M/C 48P) and 150 kPa / 1.50 bar / 22 PSI rear (110/80-18M/C 58P), paired with 1× NGK CR6HSA spark plug(s) and a YTZ6V / YTX7L-BS battery.
Drain only: 1 L (1.06 US qt)
R 150 kPa (1.50 bar)
Est. Range: ~440 km (273 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: 1 L (1.06 US qt) • With filter/strainer: 1 L (1.06 US qt) • Complete dry overhaul: 1.2 L (1.27 US qt) |
| OEM Oil Filter Code & Type | 5VL-E3411-00 (Strainer Screen) |
| 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: 150 kPa / 1.50 bar / 22 PSI |
| Cold Tire Pressure — 2-Up / Loaded Touring |
Front: 150 kPa / 1.50 bar / 22 PSI Rear: 175 kPa / 1.75 bar / 25 PSI |
| OEM Spark Plug & Quantity | NGK CR6HSA × 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 · Air-Cooled Single Engine (No liquid coolant) |
3. Ergonomics, Range & Scheduled Service Intervals
| Displacement · Max Power · Peak Torque | 124 cc · 10 hp @ 7,500 rpm · 9.9 N·m (7.3 lb-ft) @ 5,500 rpm |
|---|---|
| Seat Height & Wet Curb Weight | 840 mm (33.1 in) · 118 kg (260 lbs) |
| Fuel Tank & Est. Real-World Range | 11 L (2.9 US gal) · ~40 km/L → ~440 km (273 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
Pairing the YBR125’s counterbalanced 124cc air-cooled single with 21/18-inch spoke wheels and 118 kg curb weight, the XTZ125E served for two decades as an approachable trail bike.
Oil & Clutch Mechanical Engineering Note
With zero radiator plumbing to damage on trails and a simple internal mesh strainer, oil service takes 1.0 L of SAE 10W-40 JASO MA2 motorcycle oil.