2023 Yamaha MT-125Chain slack: 30–40 mmRear axle: 85 NmOil: Initial + every 3 000 kmValves: 24 000 km (dealer)
Yamaha MT-125
2023 · EU Market
Reference data for routine maintenance procedures. Always verify against your service manual.
The 2023 Yamaha MT-125 is a naked A1 motorcycle with a 125 cc VVA liquid-cooled single-cylinder engine, TFT dash, and traction control. Mechanics match the 2020 generation; fuel minimum is RON 90 and curb weight is 142 kg.
| Slack | 30–40 mm |
| Rear axle nut torque | 85 Nm |
| Locknut torque | 15 Nm |
| Front | 100/80-17 · 1.80 bar |
| Rear (solo) | 140/70-17 · 2.00 bar |
| Rear (with passenger) | 140/70-17 · 2.25 bar |
| Grade | SAE 10W-40 (API SG / JASO MA) |
| Capacity (oil change) | 0.85 L |
| Capacity (with filter) | 0.95 L |
| Coolant (reservoir) | 0.15 L |
| Coolant (radiator) | 0.49 L |
| Brake fluid | DOT 4 |
| Rear axle | 85 Nm |
| Swingarm locknut | 15 Nm |
| Spark plug | NGK MR8E9 |
| Battery | GTZ4V (12 V-3.0 Ah) |
| Capacity | 10 L (incl. 3.0 L reserve) |
| Fuel grade | Unleaded E10 · RON 90 |
| Engine oil change | Initial + every 3 000 km |
| Oil filter replacement | With oil changes |
| Air filter replacement | 6 000 km |
| Valve clearance check | 24 000 km (dealer) |
| Coolant replacement | 3 years |
| Brake fluid replacement | 2 years |
| Brake hose replacement | 4 years |
Disclaimer
- • Data source: Yamaha MT125 2023 Owner's Manual (BSU-F8199-E0)
- • Specifications may vary by VIN, market variant, and model year.
- • Always consult your owner's manual and service documentation.
- • Use this information at your own risk.