Yamaha Mio M3 125 (Blue Core) — OEM Fluid, Tire Pressure & Maintenance Specs
125cc Forced Air-Cooled Single SOHC 2-Valve Blue Core Scooter · Source: Yamaha Mio M3 125 (Blue Core) (2015–Present) Official Owner’s Manual Maintenance Specifications
According to the Yamaha Mio M3 125 (Blue Core) (2015–Present) Official Owner’s Manual Maintenance Specifications, the 2015–Present Yamaha Mio M3 125 (Blue Core) (chassis 2PH/2SX) requires 0.8 L (0.85 US qt) of SAE 10W-40 (JASO MB, API SG or higher) engine oil for a drain-only change and 0.8 L (0.85 US qt) with filter service (B65-E3411-00 (Oil Strainer Screen)). Standard solo cold tire pressure is 200 kPa / 2.00 bar / 29 PSI front (70/90-14M/C 34P) and 225 kPa / 2.25 bar / 33 PSI rear (80/90-14M/C 40P), paired with 1× NGK CR6HSA spark plug(s) and a YTZ7V / YTZ6V battery.
Drain only: 0.8 L (0.85 US qt)
R 225 kPa (2.25 bar)
Est. Range: ~210 km (130 mi)
1. Engine Lubrication, Filter & Clutch Specifications
| Clutch Architecture | Dry Centrifugal CVT Belt Drive |
|---|---|
| Recommended Viscosity & Grade | SAE 10W-40 (Alt: SAE 10W-30) · JASO MB · API SG or higher |
| Oil Volume (Drain / With Filter / Overhaul) |
• Drain only: 0.8 L (0.85 US qt) • With filter/strainer: 0.8 L (0.85 US qt) • Complete dry overhaul: 0.84 L (0.89 US qt) |
| OEM Oil Filter Code & Type | B65-E3411-00 (Oil 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 |
| Final Drive / Bevel Gear Oil | 100 ml (0.10 L) — SAE 10W-40 JASO MB (100 ml rear gear oil) |
2. Cold Tire Pressures, Wheels, Ignition & Drivetrain
| Front / Rear OEM Tire Sizes | Front: 70/90-14M/C 34P · Rear: 80/90-14M/C 40P (Tubeless) |
|---|---|
| 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: 225 kPa / 2.25 bar / 33 PSI |
| OEM Spark Plug & Quantity | NGK CR6HSA × 1 (Gap: 0.8–0.9 mm) |
| OEM Battery Code & Rating | YTZ7V / YTZ6V (12V 6.0Ah MF AGM) |
| Final Drive Maintenance | Dry V-Belt CVT Drive — Inspect/replace V-belt and rollers every 20,000–24,000 km |
| Brake Fluid & Coolant | DOT 4 · Forced Air-Cooled Engine (No liquid coolant) |
3. Ergonomics, Range & Scheduled Service Intervals
| Displacement · Max Power · Peak Torque | 125 cc · 9.5 hp @ 8,000 rpm · 9.6 N·m (7.1 lb-ft) @ 5,500 rpm |
|---|---|
| Seat Height & Wet Curb Weight | 750 mm (29.5 in) · 94 kg (207 lbs) |
| Fuel Tank & Est. Real-World Range | 4.2 L (1.1 US gal) · ~50 km/L → ~210 km (130 mi) |
| OEM Scheduled Maintenance Intervals |
• First Break-In: 1,000 km • Engine Oil / Filter: 4,000 km / 8,000 km • Air Filter / Spark Plug: 12,000 km / 8,000 km • Valve Clearance Check: 12,000 km |
4. Generation Cutoffs & Real-World Wrenching Gotchas
Model-Year & Chassis Generation Notes
Replacing the 115cc YMJet-FI Mio in 2015 (chassis 2PH), the Mio M3 / Mio i 125 pioneered Yamaha’s air-cooled 125cc DiASil-cylinder Blue Core scooter engine on 14-inch wheels.
Oil & Clutch Mechanical Engineering Note
Relying on 0.80 L of SAE 10W-40 JASO MB oil to cool its DiASil cylinder and forged piston, drain every 2,500–3,000 km under stop-and-go tropical or summer duty.