Yamaha YZF-R3 / MT-03 — OEM Fluid, Tire Pressure & Maintenance Specs
321cc Liquid-Cooled Parallel-Twin DOHC 8-Valve 180° Crank (Wet Multi-Plate) · Source: Yamaha YZF-R3 (RH12 / B7P) Official Owner’s Manual Specifications
According to the Yamaha YZF-R3 (RH12 / B7P) Official Owner’s Manual Specifications, the 2019–Present Yamaha YZF-R3 / MT-03 (chassis RH12/B7P/B5L) requires 1.8 L (1.90 US qt) of SAE 10W-40 (JASO MA2, API SG or higher) engine oil for a drain-only change and 2.1 L (2.22 US qt) with filter service (1WD-E3440-10 / HF204). Standard solo cold tire pressure is 200 kPa / 2.00 bar / 29 PSI front (110/70R17 M/C 54H) and 250 kPa / 2.50 bar / 36 PSI rear (140/70R17 M/C 66H), paired with 2× NGK LMAR8A-9 spark plug(s) and a YTZ8V battery.
Drain only: 1.8 L (1.90 US qt)
R 250 kPa (2.50 bar)
Est. Range: ~343 km (213 mi)
1. Engine Lubrication, Filter & Clutch Specifications
| Clutch Architecture | Wet Multi-Plate Manual Clutch NEVER use JASO MB |
|---|---|
| Recommended Viscosity & Grade | SAE 10W-40 (Alt: SAE 10W-50 (서킷 주행 시)) · JASO MA2 · API SG or higher |
| Oil Volume (Drain / With Filter / Overhaul) |
• Drain only: 1.8 L (1.90 US qt) • With filter/strainer: 2.1 L (2.22 US qt) • Complete dry overhaul: 2.4 L (2.54 US qt) |
| OEM Oil Filter Code & Type | 1WD-E3440-10 / HF204 |
| 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 | 35 N·m (25.8 lb-ft / 3.57 kgf·m) — Use fresh crush washer |
2. Cold Tire Pressures, Wheels, Ignition & Drivetrain
| Front / Rear OEM Tire Sizes | Front: 110/70R17 M/C 54H · Rear: 140/70R17 M/C 66H (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 LMAR8A-9 × 2 (Gap: 0.8–0.9 mm) |
| OEM Battery Code & Rating | YTZ8V (12V 7.0Ah MF AGM) |
| Final Drive Maintenance | 520 O-Ring Chain (112 links, 14T/43T sprockets) — Slack 35–45 mm |
| Brake Fluid & Coolant | DOT 4 · Yamalube Ethylene Glycol Coolant (~1.3 L total) |
3. Ergonomics, Range & Scheduled Service Intervals
| Displacement · Max Power · Peak Torque | 321 cc · 42 hp @ 10,750 rpm · 29.5 N·m (21.8 lb-ft) @ 9,000 rpm |
|---|---|
| Seat Height & Wet Curb Weight | 780 mm (30.7 in) · 169 kg (373 lbs) |
| Fuel Tank & Est. Real-World Range | 14 L (3.7 US gal) · ~24.5 km/L → ~343 km (213 mi) |
| OEM Scheduled Maintenance Intervals |
• First Break-In: 1,000 km • Engine Oil / Filter: 5,000 km / 10,000 km • Air Filter / Spark Plug: 15,000 km / 15,000 km • Valve Clearance Check: 42,000 km |
4. Generation Cutoffs & Real-World Wrenching Gotchas
Model-Year & Chassis Generation Notes
2019+ USD-fork models (RH12) use radial tires and long-reach NGK LMAR8A-9 spark plugs, whereas early 2015–2017 RH07 models used NGK CR8E plugs and bias-ply tires.
Oil & Clutch Mechanical Engineering Note
Spinning past 12,000 rpm, the 321cc twin shears mineral oil quickly; full-synthetic SAE 10W-40 JASO MA2 keeps shift quality crisp. Shares identical fluid and filter specs with the Yamaha MT-03.
Garage Wrenching Gotchas
- Keep 10–15 mm of free play at the clutch lever tip; zero free play preloads the release bearing and burns plates under high-rpm shifts.
- Popping the lower-left fairing push-rivets gives clean wrench clearance to the spin-on oil filter without removing full side fairings.
5. Frequently Asked Questions (FAQ)
How much oil does a Yamaha YZF-R3 take with and without filter?
The Yamaha YZF-R3 takes 1.8 L (1.9 US qt) without filter change and 2.1 L (2.2 US qt) with a new spin-on oil filter.
What is the factory cold tire pressure for the Yamaha R3?
Street cold inflation pressure is 200 kPa (29 PSI) front and 250 kPa (36 PSI) rear.
Is the YZF-R3 beginner-friendly for shorter riders?
Yes—its narrow waist, 780 mm seat height, and light 169 kg wet weight make the R3 one of the easiest sportbikes to flat-foot.