1974-1976 Harley-Davidson SS/SX-175/250 Service Manual

1974–1976 Harley-Davidson SS/SX-175/250 Service Manual

• This 1974–1976 Harley-Davidson SS/SX-175/250 service manual is designed for owners and technicians servicing the 175 cc and 250 cc single-cylinder two-cycle engine variants.
• Original OEM publication, revised December 1975, covering the SS and SX street and dual-purpose models.
• Contains 35 detailed exploded-view diagrams of the engine, clutch, transmission, forks, and fuel system.
• Documents factory-specified tightening torque values in both ft-lbs and kgm for over 60 critical engine and chassis components.
• Delivers essential technical clearance data for piston-cylinder fits, transmission end play, and starter mechanism tolerances.
• Includes specialized charts for how factory workshop documentation is structured to aid in component identification and assembly.
• This 126-page reference is the primary documentation for the 1974–1976 Harley-Davidson SS/SX-175/250 range, providing build-specific adjustments for the Dellorto VHB27AD and PHB32AD carburetors.

Chassis and Engine Documentation

The manual details technical construction through dedicated chapters covering product specifications, chassis components, engine internals, and transmission assemblies. It breaks down procedures for front fork maintenance using Marzocchi, Ceriani, or Betor components, alongside steering head and rear suspension alignment. Detailed chapters explain the fuel system, lubrication requirements, and exhaust maintenance including carbon removal and muffler service techniques.

Specification and Reference Values

Engine data includes bore dimensions of 61 mm for 175 models and 72 mm for 250 models. Connecting rod end play is specified at 0.012–0.016 inch (0.30–0.40 mm) in the engine specification table. Intake port piston clearance is documented between 0.0006 and 0.0018 inch for the SX-175 engine. The manual also provides complete wiring and ignition timing data to facilitate diagnostic work. This 126-page Harley-Davidson SS/SX-175/250 factory workshop manual documents engine, chassis, electrical, and fuel-injection specifications for the 1974–1976 production run.