Yamaha YBR125 (RE05 / E3D FI) — OEM Fluid, Tire Pressure & Maintenance Specs
124cc Air-Cooled Single SOHC 2-Valve FI (5-Speed Commuter) · Source: Yamaha YBR125 (RE05 / E3D FI) (2007–2016) Official Owner’s Manual Maintenance Specifications
According to the Yamaha YBR125 (RE05 / E3D FI) (2007–2016) Official Owner’s Manual Maintenance Specifications, the 2007–2016 Yamaha YBR125 (RE05 / E3D FI) (chassis RE05/RE07/3D9) requires 1 L (1.06 US qt) of SAE 10W-40 (JASO MA2, API SG or higher) engine oil for a drain-only change and 1 L (1.06 US qt) with filter service (5VL-E3411-00 (Oil Strainer Screen)). Standard solo cold tire pressure is 175 kPa / 1.75 bar / 25 PSI front (2.75-18 42P) and 200 kPa / 2.00 bar / 29 PSI rear (90/90-18M/C 57P), paired with 1× NGK CR6HSA spark plug(s) and a YB5L-B / 12N5.5-3B battery.
Drain only: 1 L (1.06 US qt)
R 200 kPa (2.00 bar)
Est. Range: ~585 km (364 mi)
1. Engine Lubrication, Filter & Clutch Specifications
| Clutch Architecture | Wet Multi-Plate Manual Clutch NEVER use JASO MB |
|---|---|
| Recommended Viscosity & Grade | SAE 10W-40 · JASO MA2 · API SG or higher |
| Oil Volume (Drain / With Filter / Overhaul) |
• Drain only: 1 L (1.06 US qt) • With filter/strainer: 1 L (1.06 US qt) • Complete dry overhaul: 1.2 L (1.27 US qt) |
| OEM Oil Filter Code & Type | 5VL-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 |
2. Cold Tire Pressures, Wheels, Ignition & Drivetrain
| Front / Rear OEM Tire Sizes | Front: 2.75-18 42P · Rear: 90/90-18M/C 57P (Tubeless) |
|---|---|
| Cold Tire Pressure — Solo Riding |
Front: 175 kPa / 1.75 bar / 25 PSI Rear: 200 kPa / 2.00 bar / 29 PSI |
| Cold Tire Pressure — 2-Up / Loaded Touring |
Front: 175 kPa / 1.75 bar / 25 PSI Rear: 280 kPa / 2.80 bar / 41 PSI |
| OEM Spark Plug & Quantity | NGK CR6HSA × 1 (Gap: 0.8–0.9 mm) |
| OEM Battery Code & Rating | YB5L-B / 12N5.5-3B (12V 5.0Ah) |
| Final Drive Maintenance | 428 Drive Chain — Maintain 20–30 mm slack and lubricate regularly |
| Brake Fluid & Coolant | DOT 4 · Air-Cooled Single Engine (No liquid coolant) |
3. Ergonomics, Range & Scheduled Service Intervals
| Displacement · Max Power · Peak Torque | 124 cc · 10 hp @ 7,800 rpm · 9.6 N·m (7.1 lb-ft) @ 6,000 rpm |
|---|---|
| Seat Height & Wet Curb Weight | 780 mm (30.7 in) · 125 kg (276 lbs) |
| Fuel Tank & Est. Real-World Range | 13 L (3.4 US gal) · ~45 km/L → ~585 km (364 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: 6,000 km |
4. Generation Cutoffs & Real-World Wrenching Gotchas
Model-Year & Chassis Generation Notes
Switching from carburetor to fuel injection in 2007 (RE05/RE07), the air-cooled 5-speed YBR125 paired 18-inch cast tubeless wheels with a 13 L tank for nearly 600 km range.
Oil & Clutch Mechanical Engineering Note
Built without a paper oil filter (internal mesh screen only), a standard oil drain takes an exact 1.0 L bottle of SAE 10W-40 JASO MA/MA2 motorcycle oil.