Yamaha Tricity 155 (MW150 / SG37J LMW) — OEM Fluid, Tire Pressure & Maintenance Specs
155cc Liquid-Cooled Single SOHC 4-Valve Blue Core VVA (LMW Scooter) · Source: Yamaha Tricity 155 (MW150 / SG37J LMW) (2017–Present) Official Owner’s Manual Maintenance Specifications
According to the Yamaha Tricity 155 (MW150 / SG37J LMW) (2017–Present) Official Owner’s Manual Maintenance Specifications, the 2017–Present Yamaha Tricity 155 (MW150 / SG37J LMW) (chassis SG37J/SG81J/BB8) requires 0.9 L (0.95 US qt) of SAE 10W-40 (JASO MB, API SG or higher) engine oil for a drain-only change and 0.9 L (0.95 US qt) with filter service (B65-E3411-00 (Oil Strainer Screen)). Standard solo cold tire pressure is 175 kPa / 1.75 bar / 25 PSI front (90/80-14M/C 43P (x2)) and 225 kPa / 2.25 bar / 33 PSI rear (130/70-13M/C 63P), paired with 1× NGK CPR8EA-9 spark plug(s) and a YTZ7V / YTZ6V battery.
Drain only: 0.9 L (0.95 US qt)
R 225 kPa (2.25 bar)
Est. Range: ~277 km (172 mi)
1. Engine Lubrication, Filter & Clutch Specifications
| Clutch Architecture | Dry Centrifugal CVT Belt Drive |
|---|---|
| Recommended Viscosity & Grade | SAE 10W-40 (Alt: SAE 10W-30) · JASO MB · API SG or higher |
| Oil Volume (Drain / With Filter / Overhaul) |
• Drain only: 0.9 L (0.95 US qt) • With filter/strainer: 0.9 L (0.95 US qt) • Complete dry overhaul: 1 L (1.06 US qt) |
| OEM Oil Filter Code & Type | B65-E3411-00 (Oil Strainer Screen) |
| 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 |
| Final Drive / Bevel Gear Oil | 150 ml (0.15 L) — SAE 10W-40 / 85W-140 (150 ml rear gear oil) |
2. Cold Tire Pressures, Wheels, Ignition & Drivetrain
| Front / Rear OEM Tire Sizes | Front: 90/80-14M/C 43P (x2) · Rear: 130/70-13M/C 63P (Tubeless) |
|---|---|
| Cold Tire Pressure — Solo Riding |
Front: 175 kPa / 1.75 bar / 25 PSI Rear: 225 kPa / 2.25 bar / 33 PSI |
| Cold Tire Pressure — 2-Up / Loaded Touring |
Front: 175 kPa / 1.75 bar / 25 PSI Rear: 250 kPa / 2.50 bar / 36 PSI |
| OEM Spark Plug & Quantity | NGK CPR8EA-9 × 1 (Gap: 0.8–0.9 mm) |
| OEM Battery Code & Rating | YTZ7V / YTZ6V (12V 6.0Ah MF AGM) |
| Final Drive Maintenance | Dry V-Belt CVT Drive — Inspect/replace V-belt and rollers every 20,000–24,000 km |
| 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 · 15.1 hp @ 8,000 rpm · 14 N·m (10.3 lb-ft) @ 6,500 rpm |
|---|---|
| Seat Height & Wet Curb Weight | 785 mm (30.9 in) · 172 kg (379 lbs) |
| Fuel Tank & Est. Real-World Range | 7.2 L (1.9 US gal) · ~38.5 km/L → ~277 km (172 mi) |
| OEM Scheduled Maintenance Intervals |
• First Break-In: 1,000 km • Engine Oil / Filter: 4,000 km / 8,000 km • Air Filter / Spark Plug: 12,000 km / 8,000 km • Valve Clearance Check: 12,000 km |
4. Generation Cutoffs & Real-World Wrenching Gotchas
Model-Year & Chassis Generation Notes
Launched in 2017 (SG37J) with a rear parking brake and 155cc VVA power over the 125, the 2023+ SG81J gained Ackermann steering geometry and a longer wheelbase.
Oil & Clutch Mechanical Engineering Note
Powered by the 155cc Blue Core VVA dry-CVT single, refill 0.9 L of SAE 10W-40 JASO MB oil plus 150 ml of rear reduction gear oil, checking the dipstick unscrewed.