Factory Workshop SpecificationsPlatform Gen: 2009–2026

2026 Yamaha Zuma 125 (YW125) Specifications & Consumables

Official workshop technical reference: fluid capacities, spark plug codes, drive chain specs, and tire inflation pressures.

Gen 2009–2026

Factory Platform Compatibility: All workshop fluid capacities, maintenance milestones, torque specifications, and consumables on this specification sheet are factory-identical across model years 2009 through 2026.

Select Model Year:(Active: 2026)

2009 2010 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 2025 2026

Engine

125cc

Drive

Not Available

Cooling

Liquid-Cooled (2022–2026) / Forced Air-Cooled with Fan Shroud (2009–2021)

Engineering Subsystem Workbenches & Calculators

Dedicated deep-dive diagnostic tools, torque matrices, wiring pinouts, and calculators tailored for 2026 Yamaha Zuma 125 (YW125).

10 Dedicated Engineering Spoke Pages

Subsystem Guide/torques

Fastener Torques

Engine drain plug, axle spindles, caliper mounts, triple clamp pinch bolts & thread lubrication derating guide.

Open Dedicated Workbench →

Subsystem Guide/fluids

Fluids & Capacities

Oil: 0.90 L (0.95 US qt) [0.80 L without filter / periodic change] • Coolant: 0.52 L (0.55 US qt) [2022+ Liquid Cooled models] • Brake: N/A

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Subsystem Guide/fuses-relays

Fuses & Relays

Main: N/A • Location: N/A

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Subsystem Guide/compression

Compression & Leakdown

Ratio: N/A

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Subsystem Guide/valves

Valve Clearances

Intake: N/A mm • Exhaust: N/A mm

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Subsystem Guide/fuel-delivery

Fuel Delivery & TB Sync

Idle: N/A • Rail Pressure: N/A • Vacuum: N/A

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Subsystem Guide/electrical

Charging & Battery

Battery: YT7B-BS

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Subsystem Guide/tires

Tires & Gearing

Front: 120/70-12 51L Dual-Sport Tread • Rear: 130/70-12 56L Dual-Sport Tread

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Subsystem Guide/suspension

Suspension & Sag

Front Travel: N/A • Rear Travel: N/A

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Subsystem Guide/maintenance

Maintenance Schedule

Oil: N/A • Valves: N/A • Plugs: N/A

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Fluids & Service Capacities

Shop Fluids →

Engine Oil (Drain & Filter Change)0.90 L (0.95 US qt) [0.80 L without filter / periodic change]

Engine Oil (Drain Only)N/A

Recommended Oil ViscosityYamalube 4 10W-40 4-Stroke Motorcycle Oil (API SG/SJ/SL, JASO MB/MA)

Coolant System Capacity0.52 L (0.55 US qt) [2022+ Liquid Cooled models]

Brake Fluid StandardNot Available

Drivetrain, Chain & Gearing

Gearing Calculator →Shop Chains & Sprockets →

Drive Chain PitchBelt Drive

Chain Link CountN/A

Front Sprocket TeethN/A

Rear Sprocket TeethN/A

Final Drive ConfigurationCarbon Belt Drive

Ignition & Electrical Specifications

Shop Plugs & Batteries →

OEM Spark Plug Part NumberNGK CPR8EA-9

Electrode Spark Plug Gap0.8–0.9 mm (0.031–0.035 in)

OEM Battery Reference CodeYT7B-BS

Battery Output & RatingNot Available

Spark Plug Inspection IntervalN/A

Wheels, Tires & Inflation Pressures

Shop Tires →

Front Tire Dimensions120/70-12 51L Dual-Sport Tread

Cold Front Inflation PressureN/A

Rear Tire Dimensions130/70-12 56L Dual-Sport Tread

Cold Rear Inflation PressureN/A

OEM Wheel Rim Widths (F / R)3.50" / 5.50"

Official NHTSA Safety Recalls & Technical Bulletins

0 Open Campaigns (Clean)

U.S. Department of Transportation compliance database (Title 49 U.S.C. Chapter 301).

Verify VIN on NHTSA.gov

No Active Federal Safety Recalls Reported

The U.S. DOT National Highway Traffic Safety Administration (NHTSA) records zero open safety recall campaigns for the 2026 Yamaha Zuma 125 (YW125) platform. Always check your individual 17-digit VIN at an authorized dealership or via NHTSA.gov for individual recall completions.

OEM Workshop Archives

Official Factory Service Bulletins & Field Updates

1 Documented Bulletin

Bulletin #FSB-YAM-ZUM-01Technical Service Bulletin FSB-YAM-ZUM-01: Unified Braking System (UBS) Cable Balancing, Final Transmission Oil Drain & V-Belt Wear Service

Source: Yamaha_Zuma125_YW125_Driveline_Brake_Service.pdf

Mandated Torques:Torque: 55 N·m (40 lb-ft) (Primary Fixed Sheave Nut)Torque: 50 N·m (37 lb-ft) (Secondary Sheave Clutch Housing Nut)Torque: 13 N·m (115 in-lb) (Final Transmission Gear Oil Drain Bolt)Torque: 20 N·m (15 lb-ft) (Engine Oil Drain Bolt - 12mm Hex)

Consumable Specs:Yamalube 4 10W-40 4-Stroke OilYamalube Final Transmission Gear Oil / 85W-140 GL-4Yamaha Bel-Ray High-Temp Assembly Grease

Genuine Part Numbers:5S9-E7641-00-005S9-E7632-00-0093210-14816-00

Yamaha Adventure ScooterZuma 125 (YW125)

Yamaha Zuma 125 Driveline, Final Transmission & Dual-Sport Chassis Architecture

110ml transmission gear oil (13 N·m), primary sheave 55 N·m, secondary sheave 50 N·m, 12" dual-sport tires, and rear axle 125 N·m.

Click on Primary Sheave, Secondary Sheave, Final Gear Oil, Dual-Sport Tires, or UBS Wave Brakes to view specifications.

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