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The following models are included in this manual: RM125 / Suzuki Motor Corporation

• 2003 Suzuki RM125: Standard Edition.
• 2004 Suzuki RM125: Standard Edition with minor updates.
• 2005 Suzuki RM125: Improved suspension and engine tweaks.
• 2006 Suzuki RM125: Enhanced ergonomics and updated graphics.
• 2007 Suzuki RM125: Final iteration with refined engine and chassis.
• Production year(s): 2003, 2004, 2005, 2006, 2007

Language: English (some of our manuals are multi-language)

More information: Obtain your 2003-2007 Suzuki RM125 manual for immediate download

Table of Contents

• Introduction
• General Information
• Maintenance
• Engine
• Cooling System
• Fuel and Emission Control Systems
• Chassis
• Electrical System
• Wiring Diagram

Please note that the following table of contents is a partial overview and does not cover all the sections and topics included in the manual. It provides a glimpse of the manual's content.

The 2003-2007 Suzuki RM125 manual is a valuable resource for mechanics, technicians, and owners as it provides in-depth information and instructions for maintaining, repairing, and troubleshooting the Suzuki RM125 motorcycle. With detailed diagrams, technical specifications, and step-by-step procedures, the manual equips users with the knowledge and confidence to carry out complex repairs and maintenance tasks, ultimately extending the lifespan and performance of the RM125.

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• Click the download button to instantly access this manual.# Engine Specifications and Technical Data

• The 2003-2007 Suzuki RM125 is powered by a robust two-stroke, single-cylinder, liquid-cooled engine.
• It boasts a 125cc displacement, offering a perfect blend of power and agility.
• Equipped with a 6-speed transmission, it ensures seamless shifting.
• The RM125 features a Mikuni TMX38SS carburetor for efficient and reliable fuel delivery.
• Engine dimensions include a 54.0 mm bore and a 54.5 mm stroke.
• It has an optimal compression ratio of 8.6:1 to 10.7:1.
• The model utilizes a CDI (Capacitor Discharge Ignition) system for efficient starting.
• A wet, multi-disc clutch is present for enhanced control.
• Front suspension consists of 47mm inverted telescopic forks.
• The rear suspension includes a link-type, coil-spring, oil-damped system.
• Braking is handled by single-disc brakes at the front and rear.
• The fuel tank can hold approximately 8 liters.
• It offers a ground clearance of 350mm, suitable for diverse terrains.
• The bike's weight stands at about 87 kg, making it remarkably nimble.

Maintenance Intervals and Tips

• Replace the air filter regularly for optimal engine performance.
• Change engine oil and filter every 15 hours of riding or biannually.
• Check and adjust the chain every 500 km or after racing.
• Monitor brake pads and discs for wear.
• Annually inspect and replace the coolant.
• Regularly clean and check the spark plug.
• Lubricate suspension and bearings consistently.

Common Issues and Solutions

1. Frequent carburetor adjustments for fuel-air mixture optimization.
2. Replace clutch plates and inspect the basket for wear.
3. Rebuild the top-end of the engine after extended use.
4. Maintain suspension, including fork oil and seal replacement.
5. Monitor brake system for fluid leaks and pad wear.

Effective Maintenance Tips

1. Utilize high-quality, recommended engine oil.
2. Keep the bike clean, especially after off-road use.
3. Inspect and tighten bolts and nuts regularly.
4. Use a battery tender during extended inactivity.
5. Store in a dry, cool place.

Popular Tuning Tips and Modifications

• Upgrade the exhaust system for enhanced performance.
• Implement suspension modifications for improved handling.
• Install a high-performance air filter.
• Upgrade to a larger carburetor for better throttle response.
• Implement engine modifications for increased horsepower.

Compatible Accessories and Attachments

• Custom graphics kits for personalized aesthetics.
• Performance-enhancing exhaust systems.
• High-grip tires for better traction.
• Protective gear like skid plates and handguards.
• Comfort-enhancing seats and handlebars.

Owner Reviews: Strengths and Weaknesses

• Strengths: Agile handling, powerful engine, and lightweight design.
• Weaknesses: Frequent maintenance required, parts availability can be challenging.

Frequent Repairs and Vulnerable Parts

• Regular top-end rebuilds.
• Clutch plate replacements.
• Carburetor cleaning and adjustment.
• Suspension maintenance and rebuilds.
• Brake pad and disc replacements.
• Chain and sprocket wear.
• Spark plug replacements.
• Air filter cleaning and replacements.
• Coolant level checks and changes.
• Fuel system maintenance.
• Electrical system checks.
• Bearings and seals inspections.
• Gasket replacements.
• Exhaust system repairs.

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