Ensure the pump is adjusted correctly according to the service manual.
: 12 to 14 horsepower (14.2 PS @ 7500 rpm for the 5-speed variant). Transmission
Inspect the reed petals for cracks, fraying, or gaps. Replace if worn. Blown cylinder head gasket
Regular maintenance prevents premature component wear and preserves crisp throttle response. Follow this checklist every 3,000 kilometers (1,850 miles). Spark Plug Inspection and Gapping NGK BP7HS or Champion L82YC. Electrode Gap: 0.6 mm to 0.7 mm.
Have a restored RX 135? Share your manual restoration story in the comments below. And if you found a clean PDF link, help your fellow riders. yamaha rx 135 service manual
Consider the section on the cylinder and piston. The manual does not simply say "make sure the piston fits." It demands a specific piston-to-cylinder clearance of 0.05mm to 0.06mm. It dictates the exact stagger of the piston ring gaps (180 degrees apart). It provides a color chart for spark plug deposits—from "sooty black" (rich mixture) to "porcelain white" (lean, dangerous heat). For the uninitiated, these numbers are intimidating. For the mechanic, they are scripture. To deviate from the manual’s 2.5mm B.T.D.C. (Before Top Dead Center) ignition timing is to invite engine seizure. The manual thus serves as a firewall against chaos, imposing order on the volatile physics of a two-stroke engine that wants, by its nature, to self-destruct.
This is where the becomes more than just a book—it becomes your bible. Whether you own the standard RX 135, the sporty RX 135 (5-Speed), or the iconic RX-Z, this guide will walk you through everything you need to know about finding, using, and worshiping the official workshop manual.
A full diagram for checking lights, ignition, and horn functionality. Common Maintenance Procedures Using the Manual Replacing the Spark Plug
Included in Your 3-Day Free Trial. ✓ View 1M+ Professional PDF Manuals. www.emanuals.com YAMAHA RXG 135 Workshop Repair Manual Ensure the pump is adjusted correctly according to
Check if the carburetor float needle valve is stuck open. Issue 3: Excessive White or Blue Smoke
Following the maintenance schedule outlined in the service manual ensures longevity. Weekly/Monthly Checks
The most crucial task you will ever perform on a 2-stroke is ensuring a steady supply of clean, high-quality 2-stroke oil to your engine. Running out of oil or using a poor-quality one is the fastest way to cause a costly engine seizure. The service manual will detail how to bleed the oil pump and check its settings.
Essential for troubleshooting electrical issues. Replace if worn
: During the run-in period (first 1,000 km), it is recommended to use 40 ml of oil per litre of petrol. For regular use, maintain the oil pump flow as per the manual to prevent engine seizure. Engine Rebuild
If the oil tank runs dry, remove the bleed screw on the pump body until oil flows free of bubbles. Tighten the screw immediately.
Two-stroke exhaust systems naturally accumulate carbon soot, which chokes engine performance over time. Remove the retaining bolt at the rear tip of the silencer.
While the service manual is a deep dive, here are some essential technical specifications for the Yamaha RX 135 that you will find inside it:
132cc, air-cooled, two-stroke, single-cylinder. Bore and Stroke: 58.0 mm × 50.0 mm. Compression Ratio: 6.4:1.