Yamaha WR155R(2020–present)
Official service intervals, fluid capacities, and torque specifications for the Yamaha WR155R. Source citation: Universal motorcycle maintenance baseline • Factory manual pending review.
Quick Reference Specifications
Essential technical numbers for regular maintenance and routine oil changes
- Engine Oil Type
- 10W-40 4-Stroke Motorcycle Oil (JASO MA2)
- Oil Capacity
- 3.0–3.8 L (refer to clutch cover stamping)
- Drain Bolt Torque
- Not specified in source
- Spark Plug
- Standard spark plug per OEM spec
- Spark Plug Gap
- 0.7–0.9 mm (0.028–0.035 in)
- Service Interval
- 2,500 km (1600 mi) / 12 mo
- Cold Tire Pressures (Front / Rear)
- Front: 150 kPa (22 psi)Rear: 150 kPa (22 psi)
Periodic Maintenance Schedule
Recommended factory inspection and replacement intervals under normal riding conditions
| Service Item | Action | Distance Interval | Time Interval | Notes / Source |
|---|---|---|---|---|
Engine Oil & Filter | replace | 2,500 km(1,600 mi) | 12 mo | Standard 4-stroke motorcycle service interval |
Drive ChainBreak-in | clean | 800 km(500 mi) | 1 mo | Clean, lubricate and inspect chain tension |
Spark Plugs | inspect | 2,500 km(1,600 mi) | 12 mo | General recommendation |
Spark Plugs | replace | 5,000 km(3,000 mi) | 24 mo | General recommendation |
Air Filter Element | inspect | 2,500 km(1,600 mi) | — | General recommendation |
Air Filter Element | replace | 5,000 km(3,000 mi) | — | General recommendation |
Valve Clearance | inspect | 7,500 km(4,700 mi) | — | Check valve clearance per factory service schedule |
Brake Fluid (DOT 4) | replace | — | 24 mo | Replace every 2 years regardless of mileage |
Brake Pads & Rotors | inspect | 5,000 km(3,000 mi) | 6 mo | General recommendation |
Clutch & Throttle Free Play | adjust | 5,000 km(3,000 mi) | 6 mo | General recommendation |
Steering Head Bearings | inspect | 16,000 km(10,000 mi) | 24 mo | General recommendation |
Cooling System & Coolant | inspect | 2,500 km(1,600 mi) | 12 mo | For liquid-cooled models; inspect level and leaks |
Technical Specifications & Torque Values
Factory torque limits, fluid viscosities and adjustment clearances
Fluids & LubricantsViscosity & Capacities
Fastener TorquesN·m (ft-lb)
Engine & IgnitionClearances & Gaps
Chassis & TiresPressures & Sizing
Titlemark maintains strict citations for all technical figures. Where factory service manuals are pending audit, conservative baseline service intervals are displayed and bolt torques are explicitly marked as "Not specified in source" to prevent overtightening.
Never miss a service on your WR155R.
Track wear bars, log mileage, and generate a tamper-evident maintenance passport that proves your bike's care when it is time to sell.