Yamaha XT660R / XT660X (DM01 FI) — OEM Fluid, Tire Pressure & Maintenance Specs
660cc Liquid-Cooled Single SOHC 4-Valve FI Frame Dry-Sump · Source: Yamaha XT660R / XT660X (DM01 FI) (2004–2016) Official Owner’s Manual Maintenance Specifications
According to the Yamaha XT660R / XT660X (DM01 FI) (2004–2016) Official Owner’s Manual Maintenance Specifications, the 2004–2016 Yamaha XT660R / XT660X (DM01 FI) (chassis DM01/5VK/1D2) requires 2.5 L (2.64 US qt) of SAE 10W-40 (JASO MA2, API SG or higher) engine oil for a drain-only change and 2.6 L (2.75 US qt) with filter service (5TA-13440-90 / HF145). Standard solo cold tire pressure is 200 kPa / 2.00 bar / 29 PSI front (90/90-21M/C 54S) and 225 kPa / 2.25 bar / 33 PSI rear (130/80-17M/C 65S), paired with 1× NGK CR7E spark plug(s) and a YT9B-BS battery.
Drain only: 2.5 L (2.64 US qt)
R 225 kPa (2.25 bar)
Est. Range: ~338 km (210 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 20W-40 / 15W-50) · JASO MA2 · API SG or higher |
| Oil Volume (Drain / With Filter / Overhaul) |
• Drain only: 2.5 L (2.64 US qt) • With filter/strainer: 2.6 L (2.75 US qt) • Complete dry overhaul: 2.9 L (3.06 US qt) |
| OEM Oil Filter Code & Type | 5TA-13440-90 / HF145 |
| Correct Oil Level Check Method | Dry-sump oil tank — warm engine to operating temperature and check oil tank/frame dipstick immediately after shutdown per OEM procedure (never top up cold) |
| Oil Drain Bolt Torque | 30 N·m (22.1 lb-ft / 3.06 kgf·m) — Use fresh crush washer |
2. Cold Tire Pressures, Wheels, Ignition & Drivetrain
| Front / Rear OEM Tire Sizes | Front: 90/90-21M/C 54S · Rear: 130/80-17M/C 65S (Tube-Type Spoke Rim) |
|---|---|
| Cold Tire Pressure — Solo Riding |
Front: 200 kPa / 2.00 bar / 29 PSI Rear: 225 kPa / 2.25 bar / 33 PSI |
| Cold Tire Pressure — 2-Up / Loaded Touring |
Front: 200 kPa / 2.00 bar / 29 PSI Rear: 225 kPa / 2.25 bar / 33 PSI |
| OEM Spark Plug & Quantity | NGK CR7E × 1 (Gap: 0.7–0.8 mm) |
| OEM Battery Code & Rating | YT9B-BS (12V 8.0Ah MF AGM) |
| Final Drive Maintenance | 520 Heavy-Duty Sealed Chain — Maintain 40–55 mm slack |
| Brake Fluid & Coolant | DOT 4 · Silicate-free ethylene-glycol OAT coolant (50:50 premix) |
3. Ergonomics, Range & Scheduled Service Intervals
| Displacement · Max Power · Peak Torque | 660 cc · 48 hp @ 6,000 rpm · 60 N·m (44.3 lb-ft) @ 5,250 rpm |
|---|---|
| Seat Height & Wet Curb Weight | 865 mm (34.1 in) · 181 kg (399 lbs) |
| Fuel Tank & Est. Real-World Range | 15 L (4.0 US gal) · ~22.5 km/L → ~338 km (210 mi) |
| OEM Scheduled Maintenance Intervals |
• First Break-In: 1,000 km • Engine Oil / Filter: 10,000 km / 20,000 km • Air Filter / Spark Plug: 20,000 km / 20,000 km • Valve Clearance Check: 20,000 km |
4. Generation Cutoffs & Real-World Wrenching Gotchas
Model-Year & Chassis Generation Notes
Replacing the air-cooled XT600E in 2004, chassis DM01 spawned both the 21/17-inch XT660R trail bike and the Brembo-braked 17-inch XT660X street supermoto.
Oil & Clutch Mechanical Engineering Note
Refill in two stages (pour ~1.9 L into the frame neck, idle briefly, then top up the remaining 0.7 L to 2.6 L total w/ HF145 filter) so the dry-sump tank does not overflow.