Oil and filter change
≈ 10,000 km or 1 year
JASO MA or MA2 approved four-stroke motorcycle oil (JASO MB on scooters): an “energy conserving” car oil makes the wet clutch slip. Change it more often in city use or on track.
Source [1]NMAX 125 I · 2015–2020
Yamaha NMAX 125 I 125 · 12 hp (2015 to 2020)
The Yamaha NMAX 125 I 125 uses the Yamaha 125 Blue Core petrol engine with 12 hp.
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Technical specifications
- Fuel
- Petrol
- Power
- 12 PS / 9 kW
- Displacement
- 125 cm³
- Cylinders
- 1
- Engine code
- Yamaha 125 Blue Core
- Period covered
- 2015–2020
- Documented market
- Europe
Transmission
- Automatic variator (CVT)
Figures apply to the cited configuration and market; equipment and transmissions may vary by production date.
Specification source : [1] AutoKarnet
This version
12 hp (9 kW), variator transmission, automatic variator (CVT). Built from 2015 to 2020.
AutoKarnet advice
In the range
It is the only petrol version of this generation. The Yamaha 125 Blue Core engine is also fitted to: Yamaha XMAX (XMAX (2017)), Yamaha NMAX (NMAX 125 II).
AutoKarnet advice
Body style and inspection points
On a scooter, have the variator belt and rollers checked when due, even if the scooter covers little distance in town. Also check the small-diameter tyres, which wear fast, the lights and the centre stand; a slipping belt is felt when pulling away.
AutoKarnet advice
Comparing generations
Other documented generations of this model: • NMAX 125 II (from 2021) : scooter, 12–12 hp. A first registration near a generation change does not identify the car on its own: check the body style and powertrain before using a service schedule.
AutoKarnet advice
Maintenance and records
≈: estimated reference — the vehicle’s service indicator prevails.
Brake fluid
Every 2 years
Replace the fluid in both circuits (and the hydraulic clutch if fitted), whatever the mileage; dark fluid has absorbed moisture.
Source [1]Fork oil
≈ 30,000 km
Fork oil change and seal check; an oil film on the tubes means a seal needs replacing before it contaminates the brake caliper.
Source [1]Final drive oil
≈ 20,000 km
The rear-wheel gearcase has its own oil, separate from the engine oil; replace it when the service book says, often with the variator belt.
Source [1]Spark plugs
Every 10,000 km
Replace the full set; worn plugs raise consumption and cause misfires.
Source [1]Air filter
Every 10,000 km
Replace more often in dusty conditions.
Source [1]Valve clearance
Every 10,000 km
Check and adjust if needed, often together with the plugs; too little clearance burns the valves, too much makes the engine noisy.
Source [1]Variator belt and rollers
Every 20,000 km
Replace the belt and check the rollers and clutch; a worn belt makes the scooter slip and can snap while riding.
Source [1]Coolant
Every 3 years
Replace the coolant and check the hoses and radiator; check the level cold between services.
Source [1]Questions about this version (3)
Which engine is in the Yamaha NMAX 125 I 125?
The Yamaha 125 Blue Core petrol engine (125 cc), 12 hp (9 kW).
AutoKarnet advice
Which oil for the Yamaha NMAX 125?
A JASO MA2 10W-40 four-stroke motorcycle oil suited to the Yamaha 125 Blue Core engine.
AutoKarnet advice
How do I check this page matches my car?
This page covers Yamaha NMAX 125 I 125 12 hp, scooter, 2015–2020, with 12 hp (9 kW), Yamaha 125 Blue Core, 125 cm³, automatic variator (CVT), 2015–2020. Compare these details with the registration document and gearbox identification. The designation Yamaha 125 Blue Core may cover several revisions: a VIN is still needed to confirm part numbers.
AutoKarnet advice
Documentary sources
- [1] Rédaction AutoKarnet
AutoKarnet · FR · Europe · Synthèse éditoriale AutoKarnet · Accessed 09/10/2026