Royal Enfield Classic 350 (UCE Pre-2021) — OEM Fluid, Tire Pressure & Maintenance Specs
346cc Air-Cooled Single OHV Pushrod UCE Twinspark · Source: Royal Enfield Classic 350 (UCE Pre-2021) (2009–2021) Official Owner’s Manual Maintenance Specifications
According to the Royal Enfield Classic 350 (UCE Pre-2021) (2009–2021) Official Owner’s Manual Maintenance Specifications, the 2009–2021 Royal Enfield Classic 350 (UCE Pre-2021) (chassis ME3U3S5C) requires 2.3 L (2.43 US qt) of SAE 15W-50 (JASO MA2, API SL (RE Liquid Gun 15W-50)) engine oil for a drain-only change and 2.45 L (2.59 US qt) with filter service (RE 500616 / HF156). Standard solo cold tire pressure is 140 kPa / 1.40 bar / 20 PSI front (90/90-19 M/C 52P) and 210 kPa / 2.10 bar / 30 PSI rear (110/90-18 M/C 61P), paired with 2× Bosch UR5DDC + W7DC (Twinspark) spark plug(s) and a 12N9-4B-1 / YTX9-BS battery.
Drain only: 2.3 L (2.43 US qt)
R 210 kPa (2.10 bar)
Est. Range: ~473 km (294 mi)
1. Engine Lubrication, Filter & Clutch Specifications
| Clutch Architecture | Wet Multi-Plate Manual Clutch NEVER use JASO MB |
|---|---|
| Recommended Viscosity & Grade | SAE 15W-50 · JASO MA2 · API SL (RE Liquid Gun 15W-50) |
| Oil Volume (Drain / With Filter / Overhaul) |
• Drain only: 2.3 L (2.43 US qt) • With filter/strainer: 2.45 L (2.59 US qt) • Complete dry overhaul: 2.75 L (2.91 US qt) |
| OEM Oil Filter Code & Type | RE 500616 / HF156 |
| Correct Oil Level Check Method | Hold bike upright on level ground 3–5 min after warm shutdown; read crankcase sight glass |
| Oil Drain Bolt Torque | 25 N·m (18.4 lb-ft / 2.55 kgf·m) — Use fresh crush washer |
2. Cold Tire Pressures, Wheels, Ignition & Drivetrain
| Front / Rear OEM Tire Sizes | Front: 90/90-19 M/C 52P · Rear: 110/90-18 M/C 61P (Tube-Type Spoke Rim) |
|---|---|
| Cold Tire Pressure — Solo Riding |
Front: 140 kPa / 1.40 bar / 20 PSI Rear: 210 kPa / 2.10 bar / 30 PSI |
| Cold Tire Pressure — 2-Up / Loaded Touring |
Front: 155 kPa / 1.55 bar / 22 PSI Rear: 230 kPa / 2.30 bar / 33 PSI |
| OEM Spark Plug & Quantity | Bosch UR5DDC + W7DC (Twinspark) × 2 (Gap: 0.7–0.8 mm) |
| OEM Battery Code & Rating | 12N9-4B-1 / YTX9-BS (12V 8.0–9.0Ah) |
| Final Drive Maintenance | 520 Sealed X-Ring Chain — Maintain 25–35 mm slack and clean/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 | 346 cc · 19.8 hp @ 5,250 rpm · 28 N·m (20.7 lb-ft) @ 4,000 rpm |
|---|---|
| Seat Height & Wet Curb Weight | 800 mm (31.5 in) · 192 kg (423 lbs) |
| Fuel Tank & Est. Real-World Range | 13.5 L (3.6 US gal) · ~35 km/L → ~473 km (294 mi) |
| OEM Scheduled Maintenance Intervals |
• First Break-In: 500 km • Engine Oil / Filter: 6,000 km / 6,000 km • Air Filter / Spark Plug: 10,000 km / 20,000 km • Valve Clearance Check: 24,000 km |
4. Generation Cutoffs & Real-World Wrenching Gotchas
Model-Year & Chassis Generation Notes
Pre-2021 pushrod 346cc UCE Twinspark Classic 350—uses a 2.45 L sump, HF156 filter, and dual spark plugs unlike the 1.7 L single-plug J-Series successor.
Oil & Clutch Mechanical Engineering Note
Do not confuse with the newer 1.7 L J-Series: the pushrod UCE 346cc shares the big crankcase requiring 2.45 L of SAE 15W-50 JASO MA2 and filter HF156.