Triumph T100, T150, T140V, TR25W, 650 / 750 Twins, 1150 & Trident 1969–1975 OEM Service Manual (P/N 1035)

• Covers the complete 1969–1975 Triumph lineup including the T100, T150, T140V, TR25W, 650 and 750 Twins, and Trident
• Original 76-page OEM publication (Form No. 1035) documenting factory specifications and assembly standards
• Contains 68 exploded-view diagrams, 22 technical wiring schematics, and 14 engine-torque tables
• Captures the exact transition from 4-speed to 5-speed transmission layouts across the entire cylinder range

Engine, Chassis, and Workshop Documentation

When restoring classic British motorcycles, guessing torque specs or clearances is never a good option. This original factory manual provides the technical oversight needed for precise engine, transmission, and chassis maintenance. Whether you are tearing down a 250 cc single or synchronizing carburetors on a 750 cc triple-cylinder, you get immediate access via instant download to the exact data dealership mechanics relied on. The document details the removal, installation, and inspection of critical components like the crankshaft, cylinder head, and main bearings, saving you hours of trial and error on the workbench.

Triumph's vintage electrical systems and fuel setups require careful handling. This manual maps out routine lubrication schedules, contact breaker point adjustments, and vital specifications for both Monobloc and Concentric carburetors. You will also find comprehensive breakdowns of the ignition timing, alternators, Zener diodes, and rectifiers. It serves as a prime example of what an OEM service publication covers for owners maintaining these complex machines. Because working on high-voltage vintage ignition systems and pressurized fuel lines carries inherent risks, always ensure your workspace is well-ventilated and the battery is fully disconnected before beginning any teardown.

Technical Specification Preview

To provide a clear understanding of the technical depth, the assembly data explicitly lists the cylinder head bolt torque at 18 ft lbs across the twin-cylinder range. Intake valve opening is mapped from 34° to 51° BTDC in the technical timing charts, and the T150 primary chain case capacity is officially set at 0.75 pints (426 cc). This specific publication serves purely as a comprehensive technical reference and contents overview of OEM specifications to accurately guide your restoration work, without functioning as a step-by-step repair tutorial.