1973-1975 Yamaha TX500, TX500A Service Manual (P/N LIT 11613-71-01)

• Official OEM publication P/N LIT 11613-71-01 covers the 1973 first edition, alongside 1974 revisions and 1975 printing updates.
• Spanning 182 pages, the documentation includes exploded-view diagrams, engine clearance tables, electrical schematics, and ignition timing data for the DOHC 8-valve parallel-twin platform.
• Details the unique omni-phase balancer system and DOHC valvetrain geometry vital for servicing these early twin-cylinder engines.

Mechanical System Coverage

This factory reference breaks down the maintenance and assembly procedures for the TX500 and TX500A engines. It digs into the integrated components. You get clear technical breakdowns of the wet sump lubrication system, the twin CV-carburetor operation, and the intricate omni-phase balancer. Beyond the powerplant, the manual covers primary power flow from the starter motor, clutch assembly, and the kick mechanism. It also outlines exact factory specifications for the chassis, front fork, rear suspension, and hydraulic disc brake setups. Always verify that your shop lifting equipment and torque wrenches are properly calibrated before applying high loads to vintage motorcycle components.

Engine and Technical Data Preview

Serving as the authoritative technical resource for qualified mechanics, the data section leaves no guesswork. Fastener torque values are fully documented, including M8, M10, and M12 hardware. For example, cylinder head bolts require a precise 180–210 in-lbs (2.0–2.3 kg-m). Factory inspection data specifies piston-to-bore clearance at a tight 0.050–0.055 mm. When rebuilding the bottom end, the crankshaft assembly instructions guide you through selecting the correct bearing inserts based on specific housing and shaft diameter codes. Intake valve clearance is set at 0.15 mm. Keep in mind, this page reviews the contents of the publication and does not serve as a substitute for the actual diagnostic steps and repair procedures found inside the book.