The Yamaha RX 135 , also known as the or RX-K in various markets, is a 132cc, air-cooled, 2-stroke motorcycle. It is celebrated for its high power-to-weight ratio, producing approximately 12 to 14 BHP on a frame weighing just 100–116 kg . 2. Essential Maintenance Schedule
Measure with a feeler gauge to ensure it sits strictly between 0.6 mm and 0.7 mm.
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The Yamaha RX 135 service manual is a detailed guide that covers various aspects of your bike's maintenance and repair. Here are some of the key sections and topics you can expect to find:
Before turning a wrench, you must know the core engineering data of your motorcycle. These numbers ensure you do not over-tighten components or use incorrect fluid capacities. Engine and Transmission 132cc, 2-stroke, air-cooled, single-cylinder Bore x Stroke: 56.0 mm x 54.0 mm Compression Ratio: 6.6:1 The Yamaha RX 135 , also known as
A common issue with RX 135s is incorrect jetting. The manual provides the stock settings:
The RX 135 uses a relatively simple CDI system. The manual provides the wiring diagram, helping you troubleshoot: Ignition coils and spark plug issues. Generator/Stator output (AC). Battery charging and lighting circuits. 3. Chassis and Suspension Essential Maintenance Schedule Measure with a feeler gauge
| | What You'll Learn (Examples) | Why It's Important | | :--- | :--- | :--- | | General Information | How to read the manual, identify frame and engine serial numbers, use special service tools, and follow safety precautions. | Ensures you start every job correctly and safely, preventing damage to the bike or injury to yourself. | | Periodic Maintenance | A schedule for service intervals, including details on inspecting, cleaning, and adjusting parts like the spark plug, clutch, and brakes. | The foundation of bike reliability. Following this schedule prevents breakdowns and extends engine life. | | Engine | Step-by-step procedures to remove, overhaul, and rebuild the 2-stroke engine. This includes cylinder, piston, and crankshaft work. | The heart of the RX 135. This section empowers you to restore lost power and compression, the most common issues on older two-strokes. | | Fuel System | How to dismantle, clean, and adjust the carburetor, as well as inspect the reed valve. | A dirty carburetor is a leading cause of poor performance. This section helps you restore smooth throttle response. | | Electrical System | Comprehensive wiring diagrams for the entire bike, aiding in tracing shorts, testing the ignition system, and replacing the wiring harness. | The electrical system on a 30+ year old bike can be a source of endless frustration. Accurate diagrams are invaluable for diagnosis. | | Chassis | Repair guides for the telescopic front forks, twin rear shocks, braking system (both drum and any disc conversions), and wheels. | A bike is more than its engine. This section ensures your RX 135 handles, steers, and stops safely and predictably. | | Technical Specifications | Critical data, often in tables, such as standard bolt torque values, engine clearances, and fluid capacities. | Provides the precise measurements required for factory-perfect assembly. Guessing here can lead to engine seizure or part failure. |
SAE 20W-40 or premium 10W-30 motorcycle gear oil API SE/SF grade or higher. Do not use automotive oils with friction modifiers, as they cause clutch slippage. Electrical System & Ignition Timing
Ensure the oil pump is properly aligned with its throttle cable synchronization marks.