Honda CN250 Helix / Fusion (MF02) — OEM Fluid, Tire Pressure & Maintenance Specs
244cc Liquid-Cooled Single SOHC 2V + Foot Rear Brake (Dry CVT) · Source: Honda CN250 Helix / Fusion (MF02) (1986–2007) Official Owner’s Manual Maintenance Specifications
According to the Honda CN250 Helix / Fusion (MF02) (1986–2007) Official Owner’s Manual Maintenance Specifications, the 1986–2007 Honda CN250 Helix / Fusion (MF02) (chassis MF02) requires 0.8 L (0.85 US qt) of SAE 10W-30 (JASO MB, API SJ or higher) engine oil for a drain-only change and 0.8 L (0.85 US qt) with filter service (15421-KM1-000 (Strainer Screen)). Standard solo cold tire pressure is 175 kPa / 1.75 bar / 25 PSI front (110/100-12 67J) and 200 kPa / 2.00 bar / 29 PSI rear (120/90-10 66J), paired with 1× NGK DPR8EA-9 spark plug(s) and a YTX12-BS battery.
Drain only: 0.8 L (0.85 US qt)
R 200 kPa (2.00 bar)
Est. Range: ~324 km (201 mi)
1. Engine Lubrication, Filter & Clutch Specifications
| Clutch Architecture | Dry Centrifugal CVT Belt Drive |
|---|---|
| Recommended Viscosity & Grade | SAE 10W-30 (Alt: SAE 10W-40) · JASO MB · 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-KM1-000 (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 | 25 N·m (18.4 lb-ft / 2.55 kgf·m) — Use fresh crush washer |
| Final Drive / Bevel Gear Oil | 170 ml (0.17 L) — SAE 10W-30 JASO MB (170 ml rear reduction gear oil) |
2. Cold Tire Pressures, Wheels, Ignition & Drivetrain
| Front / Rear OEM Tire Sizes | Front: 110/100-12 67J · Rear: 120/90-10 66J (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: 250 kPa / 2.50 bar / 36 PSI |
| OEM Spark Plug & Quantity | NGK DPR8EA-9 × 1 (Gap: 0.8–0.9 mm) |
| OEM Battery Code & Rating | YTX12-BS (12V 8.6Ah 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 | 244 cc · 19 hp @ 7,500 rpm · 21 N·m (15.5 lb-ft) @ 5,000 rpm |
|---|---|
| Seat Height & Wet Curb Weight | 665 mm (26.2 in) · 170 kg (375 lbs) |
| Fuel Tank & Est. Real-World Range | 12 L (3.2 US gal) · ~27 km/L → ~324 km (201 mi) |
| OEM Scheduled Maintenance Intervals |
• First Break-In: 1,000 km • Engine Oil / Filter: 12,000 km / 12,000 km • Air Filter / Spark Plug: 18,000 km / 24,000 km • Valve Clearance Check: 24,000 km |
4. Generation Cutoffs & Real-World Wrenching Gotchas
Model-Year & Chassis Generation Notes
Pioneering ultra-low 665 mm touring scooter featuring digital gauges, an automotive-style rear trunk, right-floorboard foot brake pedal, and a screen-filtered 0.8 L sump.
Oil & Clutch Mechanical Engineering Note
Honda mid-size maxi-scooter eSP/eSP+ platform pairing a spin-on filter (HF204) with SAE 10W-30 JASO MB oil and 170 ml rear gear oil.