Preventative maintenance preserves engine compression and prevents premature component failure. Follow this standard interval checklist. Every 1,000 km (or 1 Month) Clean and re-gap the spark plug. Clean the air filter element. Adjust transmission clutch lever free play. Inspect, lubricate, and adjust drive chain tension. Every 3,000 km (or 3 Months) Drain and replace transmission gear oil. Decarbonize the exhaust muffler and cylinder head. Inspect brake shoes for wear and adjust lever/pedal play. Clean the carburetor float chamber and jets. 3. Engine Tuning and Fuel System Calibration
Absolutely. The RX 135 is now over two decades old, and factory-trained technicians are rare. The service manual is the only definitive source for clearances, torques, and sequences. Even if you never touch a wrench yourself, owning the manual allows you to supervise a mechanic with authority.
The RX 135 is known for its five-speed gearbox. The manual provides detailed instructions on: Replacing clutch plates. Adjusting the clutch cable for smooth gear shifts.
This opening section lays the groundwork. It includes:
The oil pump might be set too rich, or too much oil was added to the fuel tank.
The RX 135 evolved through 4-speed and 5-speed iterations, primarily distinguished by their transmission and power output. 4-Speed Variant 5-Speed Variant Engine Type Air-cooled, 2-stroke, single-cylinder Air-cooled, 2-stroke, single-cylinder Displacement 12.2 PS @ 7,500 rpm 14.2 PS @ 7,500 rpm Max Torque 10.0 Nm @ 6,500 rpm 12.3 Nm @ 7,000 rpm 130 mm Drum (Front/Rear) 130 mm Drum (Front/Rear) Fuel Capacity 10.5 Litres 10.5 Litres Engine Overhaul & Maintenance
What is the you are facing? (e.g., missing spark, engine bogging, gear slipping) Is your bike a 4-speed or 5-speed model?
Websites dedicated to the RX series often have high-quality, scanned versions of the service manual available for download. Conclusion
Specific schedules for tasks like cleaning the spark plug, adjusting drive chain slackness, and checking the telescopic front fork for oil leaks.
Turn the air screw slowly in or out until the engine reaches its highest, smoothest RPM. Reset the idle speed screw if the idle becomes too high. Spark Plug Inspection
Note: Ensure the manual matches your specific variant (e.g., 4-speed vs. 5-speed, RX-King vs. RX-135). Conclusion
The manual emphasizes precise measurements during overhauls.
Two-strokes can be sensitive to electrical issues. The manual includes: