Yamaha Exciter 155 / Sniper 155 VVA — OEM Fluid, Tire Pressure & Maintenance Specs
155cc Liquid-Cooled Single SOHC 4-Valve VVA (6-Speed Manual Underbone) · Source: Yamaha Exciter 155 / Sniper 155 VVA (2021–Present) Official Owner’s Manual Maintenance Specifications
According to the Yamaha Exciter 155 / Sniper 155 VVA (2021–Present) Official Owner’s Manual Maintenance Specifications, the 2021–Present Yamaha Exciter 155 / Sniper 155 VVA (chassis B5V/B9Y) requires 0.9 L (0.95 US qt) of SAE 10W-40 (JASO MA2, API SG or higher) engine oil for a drain-only change and 1 L (1.06 US qt) with filter service (1S7-E3440-00 / HF141). Standard solo cold tire pressure is 200 kPa / 2.00 bar / 29 PSI front (90/80-17M/C 46P) and 225 kPa / 2.25 bar / 33 PSI rear (120/70-17M/C 58P), paired with 1× NGK MR8E-9 spark plug(s) and a YTZ6V / YTX7L-BS battery.
Drain only: 0.9 L (0.95 US qt)
R 225 kPa (2.25 bar)
Est. Range: ~232 km (144 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: 0.9 L (0.95 US qt) • With filter/strainer: 1 L (1.06 US qt) • Complete dry overhaul: 1.1 L (1.16 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: 90/80-17M/C 46P · Rear: 120/70-17M/C 58P (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 · 17.9 hp @ 9,500 rpm · 14.4 N·m (10.6 lb-ft) @ 8,000 rpm |
|---|---|
| Seat Height & Wet Curb Weight | 795 mm (31.3 in) · 119 kg (262 lbs) |
| Fuel Tank & Est. Real-World Range | 5.4 L (1.4 US gal) · ~43 km/L → ~232 km (144 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 5-speed 150cc T150 in 2021, the Exciter/Sniper 155 (Y16ZR) shoehorns the R15’s 6-speed 155cc VVA slipper-clutch engine and keyless ignition into a 119 kg underbone.
Oil & Clutch Mechanical Engineering Note
Packing a full 6-speed manual assist-and-slipper wet clutch, refill 1.0 L with paper element HF141 (0.9 L drain) of SAE 10W-40 JASO MA2 synthetic oil.