Honda CB125F (JC84 eSP) — OEM Fluid, Tire Pressure & Maintenance Specs
124cc Air-Cooled Vertical Single SOHC 2V eSP 5-Speed Manual · Source: Honda CB125F (JC84 eSP) (2021–Present) Official Owner’s Manual Maintenance Specifications
According to the Honda CB125F (JC84 eSP) (2021–Present) Official Owner’s Manual Maintenance Specifications, the 2021–Present Honda CB125F (JC84 eSP) (chassis JC84) requires 0.8 L (0.85 US qt) of SAE 10W-30 (JASO MA, API SJ or higher) engine oil for a drain-only change and 0.8 L (0.85 US qt) with filter service (15421-K0R-V00 (Strainer Screen)). Standard solo cold tire pressure is 200 kPa / 2.00 bar / 29 PSI front (80/100-18 M/C 47P) and 200 kPa / 2.00 bar / 29 PSI rear (90/90-18 M/C 51P), paired with 1× NGK CPR7EA-9S spark plug(s) and a YTZ5S battery.
Drain only: 0.8 L (0.85 US qt)
R 200 kPa (2.00 bar)
Est. Range: ~734 km (456 mi)
1. Engine Lubrication, Filter & Clutch Specifications
| Clutch Architecture | Wet Multi-Plate Manual Clutch NEVER use JASO MB |
|---|---|
| Recommended Viscosity & Grade | SAE 10W-30 (Alt: SAE 10W-40) · JASO MA · API SJ 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: 1 L (1.06 US qt) |
| OEM Oil Filter Code & Type | 15421-K0R-V00 (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 | 24 N·m (17.7 lb-ft / 2.45 kgf·m) — Use fresh crush washer |
2. Cold Tire Pressures, Wheels, Ignition & Drivetrain
| Front / Rear OEM Tire Sizes | Front: 80/100-18 M/C 47P · Rear: 90/90-18 M/C 51P (Tubeless) |
|---|---|
| Cold Tire Pressure — Solo Riding |
Front: 200 kPa / 2.00 bar / 29 PSI Rear: 200 kPa / 2.00 bar / 29 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 CPR7EA-9S × 1 (Gap: 0.8–0.9 mm) |
| OEM Battery Code & Rating | YTZ5S (12V 3.5Ah MF AGM) |
| Final Drive Maintenance | 428 Drive Chain — Maintain 20–30 mm slack and lubricate regularly |
| Brake Fluid & Coolant | DOT 4 · Air/Oil-Cooled Engine (No liquid coolant) |
3. Ergonomics, Range & Scheduled Service Intervals
| Displacement · Max Power · Peak Torque | 124 cc · 10.9 hp @ 7,500 rpm · 10.9 N·m (8.0 lb-ft) @ 6,000 rpm |
|---|---|
| Seat Height & Wet Curb Weight | 790 mm (31.1 in) · 117 kg (258 lbs) |
| Fuel Tank & Est. Real-World Range | 11 L (2.9 US gal) · ~66.7 km/L → ~734 km (456 mi) |
| OEM Scheduled Maintenance Intervals |
• First Break-In: 1,000 km • Engine Oil / Filter: 6,000 km / 12,000 km • Air Filter / Spark Plug: 16,000 km / 12,000 km • Valve Clearance Check: 8,000 km |
4. Generation Cutoffs & Real-World Wrenching Gotchas
Model-Year & Chassis Generation Notes
Redesigned in 2021 (JC84) shedding 11 kg down to 117 kg wet with an ACG-started air-cooled eSP manual engine delivering over 700 km range from its 11.0 L tank.
Oil & Clutch Mechanical Engineering Note
Honda air-cooled manual-clutch mini-moto single requiring SAE 10W-30 JASO MA oil and periodic filter/centrifugal spinner service.