Yamaha NMAX 125 Gen 1 (2DS / SE86J) — OEM Fluid, Tire Pressure & Maintenance Specs
125cc Liquid-Cooled Single SOHC 4-Valve Gen-1 Blue Core VVA · Source: Yamaha NMAX 125 Gen 1 (2DS / SE86J) (2015–2020) Official Owner’s Manual Maintenance Specifications
According to the Yamaha NMAX 125 Gen 1 (2DS / SE86J) (2015–2020) Official Owner’s Manual Maintenance Specifications, the 2015–2020 Yamaha NMAX 125 Gen 1 (2DS / SE86J) (chassis SE86J/SED6J/2DS) requires 0.9 L (0.95 US qt) of SAE 10W-40 (JASO MB, API SG or higher) engine oil for a drain-only change and 0.9 L (0.95 US qt) with filter service (B65-E3411-00 (Oil Strainer Screen)). Standard solo cold tire pressure is 150 kPa / 1.50 bar / 22 PSI front (110/70-13M/C 48P) and 225 kPa / 2.25 bar / 33 PSI rear (130/70-13M/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: ~284 km (176 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: 0.9 L (0.95 US qt) • With filter/strainer: 0.9 L (0.95 US qt) • Complete dry overhaul: 1 L (1.06 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 | 150 ml (0.15 L) — SAE 10W-40 JASO MB (150 ml rear gear oil) |
2. Cold Tire Pressures, Wheels, Ignition & Drivetrain
| Front / Rear OEM Tire Sizes | Front: 110/70-13M/C 48P · Rear: 130/70-13M/C 63P (Tubeless) |
|---|---|
| Cold Tire Pressure — Solo Riding |
Front: 150 kPa / 1.50 bar / 22 PSI Rear: 225 kPa / 2.25 bar / 33 PSI |
| Cold Tire Pressure — 2-Up / Loaded Touring |
Front: 150 kPa / 1.50 bar / 22 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 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 · Silicate-free ethylene-glycol OAT coolant for aluminum radiators (50:50 premix) |
3. Ergonomics, Range & Scheduled Service Intervals
| Displacement · Max Power · Peak Torque | 125 cc · 12.2 hp @ 7,500 rpm · 11.7 N·m (8.6 lb-ft) @ 7,250 rpm |
|---|---|
| Seat Height & Wet Curb Weight | 765 mm (30.1 in) · 127 kg (280 lbs) |
| Fuel Tank & Est. Real-World Range | 6.6 L (1.7 US gal) · ~43 km/L → ~284 km (176 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
Built from 2015 to 2020, Gen 1 NMAX 125 (2DS/SE86J) uses a conventional starter motor, mechanical key, and 6.6 L tank, differing in belt and bodywork from the 2021+ SEG6.
Oil & Clutch Mechanical Engineering Note
Refill 0.9 L of SAE 10W-40 JASO MB engine oil and 150 ml rear gear oil; note early 2DS mechanical cam-chain tensioners rattle if oil degrades or drops low.