28 PSI (Solo) / 32 PSI (With pillion passenger). Critical Torque Values
Explains engine teardown, clutch replacement, and carb rebuilding.
A unique feature of the RX 135 manual is its meticulous treatment of the . Many owners delete this oil injection system in a misguided attempt to “simplify” the bike, converting it to premix. The manual, however, dedicates an entire chapter to testing the oil pump’s output (measuring oil volume over 200 engine revolutions) and bleeding the system. It argues—correctly, in engineering terms—that the Autolube system provides variable oil delivery based on rpm and throttle position, ensuring both low-smoke idling and high-rpm protection. In this sense, the manual serves as a corrective to folk wisdom, reminding the owner that Yamaha’s engineers were not fools.
The Ultimate Yamaha RX 135 Service Manual Guide: Keep Your Two-Stroke Legend Alive yamaha rx 135 service manual
Ensure the oil pump is properly aligned with its throttle cable synchronization marks.
A: No. The owner's manual is a basic guide provided with the new bike, covering simple daily checks and controls. The service manual is a comprehensive technical document for mechanics and dedicated DIYers, detailing complete disassembly, repair, and reassembly.
The Autolube system must always have sufficient 2T oil. Tire Pressure: Check for correct PSI to ensure handling. Chain Tension: Clean, lubricate, and adjust the chain. Every 2,000 - 3,000 KM 28 PSI (Solo) / 32 PSI (With pillion passenger)
| Category | Specification | | :--- | :--- | | | Air-cooled, 2-stroke, single-cylinder | | Displacement | 132 cc / 133 cc (depending on variant) | | Bore & Stroke | Information can be found in the engine section of the manual | | Compression Ratio | Information can be found in the engine section of the manual | | Power Output | ~12 HP (4-speed) / ~14 HP (5-speed) / ~18.5 HP (6-speed) | | Transmission | 4-speed or 5-speed, constant mesh manual | | Primary / Secondary Reduction | Information can be found in the transmission section of the manual | | Spark Plug Type | NGK BP7HS (or equivalent) | | Engine Oil (2T) | Autolube system with separate oil tank. Capacity: ~1.3 Liters | | Transmission Oil (Gearbox) | ~0.65 Liters (0.687 US qt) when replacing | | Fuel System | Mikuni VM26 round-slide carburetor (stock) | | Air Filter | Wet-type foam element | | Front Suspension | Telescopic forks with coil springs / oil-damped | | Rear Suspension | Swingarm with twin shock absorbers | | Front Brake | Internal expanding drum brake | | Rear Brake | Internal expanding drum brake | | Front / Rear Tire Size | 2.75-18 4PR / 3.00-18 6PR (commonly) | | Fuel Tank Capacity | 10.5 Liters (including reserve) | | Battery | 12V, maintenance-free (standard on later models, early models 6V) | | Overall Length / Width / Height | 1,965 mm / 740 mm / 1,050 mm | | Seat Height | 765 mm | | Ground Clearance | Information can be found in the chassis section of the manual |
The Yamaha RX 135 remains an icon among motorcycle enthusiasts. Keeping this two-stroke legend running smoothly requires regular maintenance and access to correct technical specifications. This comprehensive guide serves as your ultimate reference companion to the official Yamaha RX 135 service manual, detailing everything you need to inspect, tune, and repair your machine. 1. Technical Specifications Quick Reference
The Yamaha RX 135 remains an absolute legend among motorcycle enthusiasts. Known for its iconic two-stroke exhaust note, sharp throttle response, and remarkable power-to-weight ratio, this motorcycle has achieved cult status. Whether you own a classic 4-speed model or the highly sought-after 5-speed variant, keeping this machine running in peak condition requires precise technical knowledge. Many owners delete this oil injection system in
After replacing fork seals, the manual has a specific alignment procedure using the axle as a jig. Skip this, and your RX will wobble at 90 km/h like a shopping cart.
The RX 135 is known for having "mild" port timing compared to the older RX100.
Many enthusiasts have scanned original manuals. A simple Google search for "yamaha rx 135 service manual PDF" will yield results on forums like:
Proper air-fuel delivery determines the performance and lifespan of a two-stroke engine. Lean mixtures cause engine seizures, while rich mixtures foul spark plugs. Carburetor Adjustment (Mikuni VM22)
