Yamaha MT-15 (B7D / B9D VVA) — OEM Fluid, Tire Pressure & Maintenance Specs
155cc Liquid-Cooled Single SOHC 4-Valve VVA Assist & Slipper Clutch · Source: Yamaha MT-15 (B7D / B9D VVA) (2019–Present) Official Owner’s Manual Maintenance Specifications
According to the Yamaha MT-15 (B7D / B9D VVA) (2019–Present) Official Owner’s Manual Maintenance Specifications, the 2019–Present Yamaha MT-15 (B7D / B9D VVA) (chassis B9D/B7D/RG85) requires 0.85 L (0.90 US qt) of SAE 10W-40 (JASO MA2, API SG or higher) engine oil for a drain-only change and 0.95 L (1.00 US qt) with filter service (1S7-E3440-00 / HF141). Standard solo cold tire pressure is 200 kPa / 2.00 bar / 29 PSI front (110/70-17M/C 54S) and 225 kPa / 2.25 bar / 33 PSI rear (140/70-17M/C 66S), paired with 1× NGK MR8E-9 spark plug(s) and a YTZ6V / YTX7L-BS battery.
Drain only: 0.85 L (0.90 US qt)
R 225 kPa (2.25 bar)
Est. Range: ~435 km (270 mi)
1. Engine Lubrication, Filter & Clutch Specifications
| Clutch Architecture | Wet Multi-Plate Manual Clutch NEVER use JASO MB |
|---|---|
| Recommended Viscosity & Grade | SAE 10W-40 · JASO MA2 · API SG or higher |
| Oil Volume (Drain / With Filter / Overhaul) |
• Drain only: 0.85 L (0.90 US qt) • With filter/strainer: 0.95 L (1.00 US qt) • Complete dry overhaul: 1.05 L (1.11 US qt) |
| OEM Oil Filter Code & Type | 1S7-E3440-00 / HF141 |
| Correct Oil Level Check Method | Hold upright on level ground; rest dipstick UNTHREADED on filler neck (do NOT screw in) |
| Oil Drain Bolt Torque | 20 N·m (14.8 lb-ft / 2.04 kgf·m) — Use fresh crush washer |
2. Cold Tire Pressures, Wheels, Ignition & Drivetrain
| Front / Rear OEM Tire Sizes | Front: 110/70-17M/C 54S · Rear: 140/70-17M/C 66S (Tubeless) |
|---|---|
| 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 MR8E-9 × 1 (Gap: 0.8–0.9 mm) |
| OEM Battery Code & Rating | YTZ6V / YTX7L-BS (12V 5.0–6.0Ah MF AGM) |
| Final Drive Maintenance | 428 Drive Chain — Maintain 20–30 mm slack and lubricate regularly |
| Brake Fluid & Coolant | DOT 4 · Silicate-free ethylene-glycol OAT coolant for aluminum radiators (50:50 premix) |
3. Ergonomics, Range & Scheduled Service Intervals
| Displacement · Max Power · Peak Torque | 155 cc · 18.4 hp @ 10,000 rpm · 14.1 N·m (10.4 lb-ft) @ 7,500 rpm |
|---|---|
| Seat Height & Wet Curb Weight | 810 mm (31.9 in) · 138 kg (304 lbs) |
| Fuel Tank & Est. Real-World Range | 10 L (2.6 US gal) · ~43.5 km/L → ~435 km (270 mi) |
| OEM Scheduled Maintenance Intervals |
• First Break-In: 1,000 km • Engine Oil / Filter: 3,000 km / 6,000 km • Air Filter / Spark Plug: 12,000 km / 9,000 km • Valve Clearance Check: 12,000 km |
4. Generation Cutoffs & Real-World Wrenching Gotchas
Model-Year & Chassis Generation Notes
Replacing the non-VVA M-Slaz in 2019, the MT-15 adopted the 155cc VVA slipper-clutch engine and standardized 37mm KYB upside-down forks and aluminum swingarms on V2+ trims.
Oil & Clutch Mechanical Engineering Note
Geared shorter than the R15 for punchy street acceleration on a 0.95 L oil bath (with HF141 element), run SAE 10W-40 JASO MA2 synthetic and avoid overfilling past the dipstick hash.
Garage Wrenching Gotchas
- Early Indian-market V1 units used a box-section steel swingarm whereas Thai/Indonesian and V2+ bikes use cast aluminum—verify swingarm type before buying spool sliders or sprockets.
- Keep high-pressure wash wands away from the compact naked headlight mask where main harness connectors sit tightly bundled behind the meter.
5. Frequently Asked Questions (FAQ)
What oil volume, JASO grade, and oil filter code does the Yamaha MT-15 (B7D / B9D VVA) (2019–Present) require?
Because its wet multi-plate clutch shares engine oil with the gearbox, run SAE 10W-40 (JASO MA2) at 0.85 L (0.90 US qt) drain-only and 0.95 L (1.00 US qt) with filter (1S7-E3440-00 / HF141).
How do you accurately check the oil level on the MT-15 (B7D / B9D VVA), and what are its service intervals?
Hold the bike upright on level ground 2–3 minutes after shutdown, wipe the dipstick, and rest it on the filler threads without screwing it in (threading it in reads artificially high and risks oil starvation). Torque the drain plug to 20 N·m with a new crush washer. Factory oil change intervals are every 3,000 km, with valve clearance inspection every 12,000 km.
What are the cold tire pressures, puncture repair type, seat height, and range of the MT-15 (B7D / B9D VVA)?
Fitted with 110/70-17M/C 54S front and 140/70-17M/C 66S rear tubeless rims (compatible with roadside plug kits), set cold tire pressures to 29 / 33 PSI (200/225 kPa) solo or 29 / 33 PSI loaded. Seat height is 810 mm (31.9 in) at 138 kg wet weight, delivering ~435 km per 10 L tank.