SYM Maxsym 400 (Euro 5) — OEM Fluid, Tire Pressure & Maintenance Specs
399cc Liquid-Cooled Single SOHC 4-Valve with TCS & Keyless · Source: SYM Maxsym 400 (Euro 5) (2021–Present) Official Owner’s Manual Maintenance Specifications
According to the SYM Maxsym 400 (Euro 5) (2021–Present) Official Owner’s Manual Maintenance Specifications, the 2021–Present SYM Maxsym 400 (Euro 5) (chassis LX40A1) requires 1.5 L (1.59 US qt) of SAE 10W-40 (JASO MB, API SJ/SL Synthetic Blend 10W-40) engine oil for a drain-only change and 1.7 L (1.80 US qt) with filter service (1541A-L4A-000 / HF972). Standard solo cold tire pressure is 200 kPa / 2.00 bar / 29 PSI front (120/70-15 56S) and 250 kPa / 2.50 bar / 36 PSI rear (160/60-14 65S), paired with 1× NGK CR8E spark plug(s) and a YTZ14S / YTX12-BS battery.
Drain only: 1.5 L (1.59 US qt)
R 250 kPa (2.50 bar)
Est. Range: ~364 km (226 mi)
1. Engine Lubrication, Filter & Clutch Specifications
| Clutch Architecture | Dry Centrifugal CVT Belt Drive |
|---|---|
| Recommended Viscosity & Grade | SAE 10W-40 · JASO MB · API SJ/SL Synthetic Blend 10W-40 |
| Oil Volume (Drain / With Filter / Overhaul) |
• Drain only: 1.5 L (1.59 US qt) • With filter/strainer: 1.7 L (1.80 US qt) • Complete dry overhaul: 2 L (2.11 US qt) |
| OEM Oil Filter Code & Type | 1541A-L4A-000 / HF972 |
| 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 | 180 ml (0.18 L) — SAE 85W-140 / 10W-40 (110–180 ml rear reduction gear oil) |
2. Cold Tire Pressures, Wheels, Ignition & Drivetrain
| Front / Rear OEM Tire Sizes | Front: 120/70-15 56S · Rear: 160/60-14 65S (Tubeless) |
|---|---|
| Cold Tire Pressure — Solo Riding |
Front: 200 kPa / 2.00 bar / 29 PSI Rear: 250 kPa / 2.50 bar / 36 PSI |
| Cold Tire Pressure — 2-Up / Loaded Touring |
Front: 200 kPa / 2.00 bar / 29 PSI Rear: 250 kPa / 2.50 bar / 36 PSI |
| OEM Spark Plug & Quantity | NGK CR8E × 1 (Gap: 0.7–0.8 mm) |
| OEM Battery Code & Rating | YTZ14S / YTX12-BS (12V 11.2Ah MF AGM) |
| Final Drive Maintenance | Dry Centrifugal V-Belt CVT — Inspect/replace V-belt and rollers every 15,000–20,000 km |
| Brake Fluid & Coolant | DOT 4 · OAT ethylene-glycol coolant for aluminum radiators (50:50 premix) |
3. Ergonomics, Range & Scheduled Service Intervals
| Displacement · Max Power · Peak Torque | 399 cc · 34 hp @ 6,750 rpm · 39.5 N·m (29.1 lb-ft) @ 5,250 rpm |
|---|---|
| Seat Height & Wet Curb Weight | 800 mm (31.5 in) · 215 kg (474 lbs) |
| Fuel Tank & Est. Real-World Range | 13 L (3.4 US gal) · ~28 km/L → ~364 km (226 mi) |
| OEM Scheduled Maintenance Intervals |
• First Break-In: 300 km • Engine Oil / Filter: 5,000 km / 10,000 km • Air Filter / Spark Plug: 6,000 km / 10,000 km • Valve Clearance Check: 10,000 km |
4. Generation Cutoffs & Real-World Wrenching Gotchas
Model-Year & Chassis Generation Notes
All-new Euro 5 GT maxi-scooter shedding 14 kg over the old Maxsym 400i, adding tool-free windscreen adjustment, TCS, keyless ignition, and radial dual front brakes.
Oil & Clutch Mechanical Engineering Note
Unlike smaller mesh-only SYMs, Maxsym 400 houses a replaceable paper element (1541A-L4A-000) taking 1.7 L of SAE 10W-40 JASO MB oil plus 180 ml rear gear oil.