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Suzuki GSX-S 125 2018–2020 Service Repair Manual – PDF Download

Suzuki GSX-S 125 2018–2020 Service Repair Manual – PDF Download

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🛠️ Suzuki GSX-S 125 2018–2020 Service Repair Manual – PDF Download

🧰 OEM Factory Workshop Manual – Covers the Suzuki GSX-S 125 naked street motorcycle with 124cc EFI engine, ABS system, and 6-speed transmission
📲 Instant PDF Download – Compatible with Windows, macOS, iOS, Android, and Linux
🔧 Trusted by Suzuki dealerships and motorcycle repair professionals worldwide

🔍 Model Background

The Suzuki GSX-S125 (2018–2020) was a lightweight naked sportbike designed for urban riders, learners, and commuters seeking a mix of sporty styling, agile handling, and class-leading performance in the 125cc category. Built on the same platform as the GSX-R125, the GSX-S125 offered a more upright riding position and everyday comfort with aggressive streetfighter looks.

At its heart was a 124cc liquid-cooled DOHC 4-stroke single-cylinder engine tuned for responsive throttle, high revs, and best-in-class power-to-weight ratio. Mated to a 6-speed manual transmission, the GSX-S125 delivered quick acceleration and strong top-end performance for a learner-legal bike.

The chassis featured a lightweight steel frame, sporty suspension, and front disc brake with Bosch ABS for confident braking. With a wet weight of just 133 kg and a low seat height, it was highly maneuverable and beginner-friendly—perfect for city navigation or twisty backroads.

Produced from 2018 to 2020, the Suzuki GSX-S125 remains a top choice in the lightweight sport category for its sharp styling, impressive performance, and everyday rideability—offering big-bike attitude in a small-displacement package.

📆 Model Years Covered:

  • Suzuki GSX-S 125 – 2018
  • Suzuki GSX-S 125 – 2019
  • Suzuki GSX-S 125 – 2020

📘 Manual Details:

  • Model: GSX-S 125
  • Engine: 124cc, 4-stroke, DOHC, single-cylinder, liquid-cooled
  • Fuel System: Electronic Fuel Injection (EFI)
  • Transmission: 6-speed constant mesh
  • Brakes: Front and rear disc brakes with ABS (region dependent)
  • Language: English
  • Pages: 550+ with diagnostics, wiring diagrams, and service charts

📚 Manual Sections Include:

  • General Information
  • VIN decoding, model ID, special tools, torque specifications
  • Scheduled Maintenance
  • Oil and filter, spark plugs, valve clearance, coolant, chain adjustment
  • Engine Repair
  • Cylinder head, piston, crankshaft, camshaft, lubrication system
  • EFI & Emissions
  • Throttle body, injectors, fuel pump, PAIR system, EVAP, SDS-II diagnostics
  • Transmission & Clutch
  • Clutch inspection, gear shifting system, gearbox teardown
  • Cooling & Exhaust
  • Radiator, thermostat, water pump, muffler and catalytic system
  • Suspension & Chassis
  • Front forks, rear shock, frame geometry, swingarm maintenance
  • Braking System
  • ABS unit, calipers, brake pad replacement, master cylinder bleeding
  • Electrical System
  • Ignition, charging system, sensors, starter motor, lights, fuses
  • Wiring Diagrams
  • Factory schematics with labeled connectors and routing paths

💾 Format & Compatibility:

  • File Format: PDF (Digital Download)
  • Searchable & Bookmarked: ✅ Yes
  • Printable: ✅ Yes – Entire manual or selected chapters
  • Compatible With: Phones, tablets, laptops, desktops

🔍 Keywords:

Suzuki GSX-S 125 service manual PDF, 2018–2020 motorcycle repair guide, 124cc engine rebuild, EFI diagnostics, ABS troubleshooting, clutch service, wiring diagrams

❓ Mini FAQ:

Q: Is this the factory service manual for the GSX-S 125?
A: Yes – this is the official OEM repair manual used by Suzuki-authorized workshops and dealerships.

Q: Does it include electronic diagnostics and valve service?
A: Absolutely – covers EFI diagnostics, SDS-II scanning, valve clearance, and electrical schematics.

Q: Can I use it on a mobile phone or tablet?
A: Yes – the PDF format is fully compatible with all modern devices.

🧭 Helpful Resources for Suzuki Motorcycle Owners

🔧 Browse More Suzuki Motorcycle Manuals

Note: While our manuals are designed for DIY use, they do not replace professional mechanical training. If you're unsure about a repair or your motorcycle shows serious issues, we strongly recommend visiting a certified mechanic. These guides are best suited for owners with basic to moderate mechanical experience.

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