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

🛠️ 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

• Why Every Motorcycle Owner Should Own a Service Manual – Find out how a downloadable repair manual can simplify maintenance and help you troubleshoot common problems on your own.
• Motorcycle Troubleshooter – Not sure what’s wrong with your Suzuki motorcycle? Our free tool lists common issues and DIY fixes across all major motorcycle brands.

🔧 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.