Honda SCR110α (WH110) — OEM Fluid, Tire Pressure & Maintenance Specs
108cc Air-Cooled Single SOHC 2V Idling-Stop eSP (Dry CVT) · Source: Honda SCR110α (WH110) (2015–2023) Official Owner’s Manual Maintenance Specifications
According to the Honda SCR110α (WH110) (2015–2023) Official Owner’s Manual Maintenance Specifications, the 2015–2023 Honda SCR110α (WH110) (chassis WH110T/JF51) requires 0.7 L (0.74 US qt) of SAE 10W-30 (JASO MB, API SJ or higher) engine oil for a drain-only change and 0.7 L (0.74 US qt) with filter service (15421-K0R-V00 (Strainer Screen)). Standard solo cold tire pressure is 175 kPa / 1.75 bar / 25 PSI front (90/90-12 44J) and 200 kPa / 2.00 bar / 29 PSI rear (100/90-10 56J), paired with 1× NGK CPR9EA-9 / MR8C-9N spark plug(s) and a YTZ6V / YTX5L-BS battery.
Drain only: 0.7 L (0.74 US qt)
R 200 kPa (2.00 bar)
Est. Range: ~301 km (187 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: 0.7 L (0.74 US qt) • With filter/strainer: 0.7 L (0.74 US qt) • Complete dry overhaul: 0.8 L (0.85 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 |
| Final Drive / Bevel Gear Oil | 100 ml (0.10 L) — SAE 10W-30 JASO MB (100 ml rear reduction gear oil) |
2. Cold Tire Pressures, Wheels, Ignition & Drivetrain
| Front / Rear OEM Tire Sizes | Front: 90/90-12 44J · Rear: 100/90-10 56J (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 CPR9EA-9 / MR8C-9N × 1 (Gap: 0.8–0.9 mm) |
| OEM Battery Code & Rating | YTZ6V / YTX5L-BS (12V 5.0Ah 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 · Air/Oil-Cooled Engine (No liquid coolant) |
3. Ergonomics, Range & Scheduled Service Intervals
| Displacement · Max Power · Peak Torque | 108 cc · 8.7 hp @ 7,500 rpm · 9.1 N·m (6.7 lb-ft) @ 6,000 rpm |
|---|---|
| Seat Height & Wet Curb Weight | 735 mm (28.9 in) · 105 kg (231 lbs) |
| Fuel Tank & Est. Real-World Range | 6.4 L (1.7 US gal) · ~47 km/L → ~301 km (187 mi) |
| OEM Scheduled Maintenance Intervals |
• First Break-In: 1,000 km • Engine Oil / Filter: 4,000 km / 8,000 km • Air Filter / Spark Plug: 16,000 km / 8,000 km • Valve Clearance Check: 8,000 km |
4. Generation Cutoffs & Real-World Wrenching Gotchas
Model-Year & Chassis Generation Notes
Unlike the early liquid-cooled JF19 SCR110, the 2015+ SCR110 Alpha sold in Korea switched to an air-cooled eSP engine with Idling Stop, eliminating radiator and coolant upkeep.
Oil & Clutch Mechanical Engineering Note
Frequent ACG Idling Stop restarts rely on low viscous drag from exact 0.70 L fills of SAE 10W-30 JASO MB oil; overfilling floods the crankcase breather into the airbox.
Garage Wrenching Gotchas
- When Idling Stop stops engaging, load-test the AGM battery first—slight voltage sag disables ACG stop-start long before normal cranking fails.
- Removing the 10-inch rear wheel requires dropping the exhaust; always install a fresh copper header gasket so exhaust leaks do not cause deceleration popping.
5. Frequently Asked Questions (FAQ)
What are the engine oil and rear hub gear oil capacities for the Honda SCR110α (WH110) scooter?
With an isolated dry CVT belt case, the engine requires 0.7 L drain-only or 0.7 L (0.74 US qt) with filter/screen (15421-K0R-V00 (Strainer Screen)) of SAE 10W-30 (JASO MB). Service the rear reduction hub separately (final drive 100 ml).
How do you accurately check the oil level on the SCR110α (WH110), and what are its service intervals?
Hold the bike upright on level ground 2–3 minutes after shutdown, wipe the dipstick, and rest it on the filler threads without screwing it in (threading it in reads artificially high and risks oil starvation). Torque the drain plug to 24 N·m with a new crush washer. Factory oil change intervals are every 4,000 km, with valve clearance inspection every 8,000 km.
What are the cold tire pressures, puncture repair type, seat height, and range of the SCR110α (WH110)?
Fitted with 90/90-12 44J front and 100/90-10 56J rear tubeless rims (compatible with roadside plug kits), set cold tire pressures to 25 / 29 PSI (175/200 kPa) solo or 25 / 36 PSI loaded. Seat height is 735 mm (28.9 in) at 105 kg wet weight, delivering ~301 km per 6.4 L tank.