Yamaha NMAX 125 (Blue Core VVA) — OEM Fluid, Tire Pressure & Maintenance Specs
125cc Liquid-Cooled Single-Cylinder SOHC 4-Valve VVA Blue Core (Dry CVT) · Source: Yamaha NMAX 125 (GPD125-A) Official Owner’s Manual Maintenance Specifications
According to the Yamaha NMAX 125 (GPD125-A) Official Owner’s Manual Maintenance Specifications, the 2021–Present Yamaha NMAX 125 (Blue Core VVA) (chassis SEG6/GPD125-A/BAL) requires 0.9 L (0.95 US qt) of SAE 10W-40 (JASO MA OR MB, API SG or higher) engine oil for a drain-only change and 0.95 L (1.00 US qt) with filter service (B65-E3411-00 (Mesh Strainer)). Standard solo cold tire pressure is 200 kPa / 2.00 bar / 29 PSI front (110/70-13 M/C 48P) and 225 kPa / 2.25 bar / 33 PSI rear (130/70-13 M/C 63P), paired with 1× NGK CPR8EA-9 spark plug(s) and a YTZ7V battery.
Drain only: 0.9 L (0.95 US qt)
R 225 kPa (2.25 bar)
Est. Range: ~305 km (190 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 MA OR MB · API SG or higher |
| Oil Volume (Drain / With Filter / Overhaul) |
• Drain only: 0.9 L (0.95 US qt) • With filter/strainer: 0.95 L (1.00 US qt) • Complete dry overhaul: 1 L (1.06 US qt) |
| OEM Oil Filter Code & Type | B65-E3411-00 (Mesh Strainer) |
| 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 / Gear Oil | 150 ml (0.15 L) — SAE 10W-40 Motor Oil or SAE 85W GL-3 Gear Oil (150 ml) |
2. Cold Tire Pressures, Wheels, Ignition & Drivetrain
| Front / Rear OEM Tire Sizes | Front: 110/70-13 M/C 48P · Rear: 130/70-13 M/C 63P (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: 250 kPa / 2.50 bar / 36 PSI |
| OEM Spark Plug & Quantity | NGK CPR8EA-9 × 1 (Gap: 0.8–0.9 mm) |
| OEM Battery Code & Rating | YTZ7V (12V 6.0Ah VRLA AGM) |
| Final Drive Maintenance | Yamaha OEM V-Belt — Replace every 18,000–20,000 km (V-Belt indicator) |
| Brake Fluid & Coolant | DOT 4 · Yamalube Ethylene Glycol Coolant for Aluminum Radiators (~0.46 L) |
3. Ergonomics, Range & Scheduled Service Intervals
| Displacement · Max Power · Peak Torque | 125 cc · 12.2 hp @ 8,000 rpm · 11.2 N·m (8.3 lb-ft) @ 6,000 rpm |
|---|---|
| Seat Height & Wet Curb Weight | 765 mm (30.1 in) · 131 kg (289 lbs) |
| Fuel Tank & Est. Real-World Range | 7.1 L (1.9 US gal) · ~43 km/L → ~305 km (190 mi) |
| OEM Scheduled Maintenance Intervals |
• First Break-In: 1,000 km • Engine Oil / Filter: 6,000 km / 12,000 km • Air Filter / Spark Plug: 12,000 km / 12,000 km • Valve Clearance Check: 12,000 km |
4. Generation Cutoffs & Real-World Wrenching Gotchas
Model-Year & Chassis Generation Notes
From 2021 (SEG6), the NMAX 125 gained Smart Key, TCS, and a larger 7.1 L tank. Always verify the stamped volume next to the final-drive fill cap (150 cm³ on NMAX 125 vs 100 cm³ on NMAX 155).
Oil & Clutch Mechanical Engineering Note
Yamaha specifies SAE 10W-40 (JASO MB low-friction preferred, JASO MA compatible) to protect the high-rpm VVA solenoid cam lobes during sustained urban commuting.
Garage Wrenching Gotchas
- Inspect and oil the large rubber O-ring on the bottom strainer cap during reassembly; pinched O-rings are the #1 cause of slow oil drips on Blue Core scooters.
- Remember to manually reset the OIL and V-BELT mileage counters in the LCD/TFT menu after completing service.
5. Frequently Asked Questions (FAQ)
What are the engine oil and final gear oil capacities for the Yamaha NMAX 125?
Routine engine oil refill is 0.90 L (0.95 US qt), and final transmission gear oil capacity is 0.15 L (150 ml).
How does the NMAX 125 braking setup differ from the PCX 125?
The NMAX 125 features front and rear hydraulic disc brakes with dual-channel ABS as standard, whereas many regional PCX 125 trims use single-channel front ABS.
What spark plug and battery fit the Yamaha NMAX 125?
The OEM spark plug is NGK CPR8EA-9 (0.8–0.9 mm gap) and the factory battery is a YTZ7V (12V 6.0Ah AGM).