1961–1974 Harley-Davidson Sprint Models C, H, SS, & SX Service & Repair Manual (P/N 99452-74)

This 158-page PDF contains Harley-Davidson’s factory service manual for 1961–1966 Sprint C and H models and 1967–1974 H, SS, and SX models. Identified as Part No. 99492-74, revised 3-77, it covers the horizontal, air-cooled, overhead-valve single from scheduled maintenance through major engine, transmission, chassis, fuel-system, and electrical repair. Because the foreword addresses both basic maintenance and factory-approved major repair methods, the book is suited to experienced owners performing service work and professional mechanics equipped for precision measurement, press work, and internal overhaul.

• Engine repair coverage includes engine removal, cylinder-head disassembly, rocker-arm bushing service, valve-guide and valve-seat replacement, cylinder refinishing, piston-ring fitting, connecting-rod alignment, oil-pump service, crankcase separation, flywheel assembly, and flywheel truing.
• Clutch and transmission sections provide separate diagnosis and overhaul procedures for 1968-and-earlier and 1969-and-later clutch assemblies, plus manual and electric starter service, gearbox disassembly, gear and bushing inspection, reassembly, shaft end-play checks, and spacer-washer selection.
• Chassis procedures cover wheel-hub repair, wheel lacing and truing, tire and bead-clamp service, fork disassembly and straightening, steering-head repair, rear-fork alignment, shock-absorber service, and drum-brake overhaul, including the SS double-leading-shoe front brake.
• Fuel and ignition work includes early and late carburetor construction, float setting, jet selection, fuel-valve repair, tappet adjustment, circuit-breaker service, mechanical spark-advance inspection, and both running-engine and static ignition-timing checks.
• Charging and starting diagnosis addresses the generator, alternator, regulator or rectifier-regulator, battery, switches, lamps, ignition coil, starter motor, solenoid circuit, armature testing, brushes, commutator, field coils, and planetary starter gears.
• Factory reference data includes model-specific frame dimensions, component fits and clearances, wear limits, valve-spring data, flywheel runout, transmission shim tables, electrical test values, wiring diagrams, section views, and exploded assembly drawings.

Year-Specific Mechanical Coverage

The specifications distinguish the 246.2 cc 1961–1966 and 248.4 cc 1967–1968 engines from the 344 cc 1969–1974 builds. Transmission coverage changes from four forward gears through 1972 to the five-speed gearbox used for 1973–1974. The lubrication chapters also separate the 1963-and-earlier duplex feed-and-scavenge oil pump from the feed-only arrangement used from 1964 onward.

Electrical construction changes substantially after 1972. Earlier motorcycles use a 6-volt generator and separate regulator, while 1973–1974 models receive a 12-volt alternator, solid-state rectifier-regulator, electric starter, and revised lighting and direction-signal circuits. Cylinder-head, carburetor, clutch, fork, steering-head, brake, and starter procedures are divided by the applicable year and model rather than presented as one universal design.

Running changes are identified where they affect parts or repair procedures. The fork vent-valve arrangement applies to 1970 SS motorcycles beginning with serial 12216 and to 1971 SS and SX models. The generator armature and crankshaft taper changed during the 1969 season beginning with serial 3672.

Drawings and Special Tools

Named illustrations include Basic Frame Dimensions—1973–74 SS and SX, Front Fork (1971 and Later)—Exploded View, Cross Section of Carburetor (1969 and Later), and Transmission, 1973 and Later—Exploded View. Electrical material includes the 1973 Sprint SS/SX Wiring Diagram, the separate 1974 diagram, and the Rectifier-Regulator Module Schematic Diagram.

The service-tool listings identify equipment such as the 95760-69 Bushing and Bearing Puller Set, 97305-61 Fork Tube Tool, 97290-61P Valve Spring Compressor, 97293-61P Clutch Spring Compressor, 97295-61PA and 97297-61PA crankshaft tools, and 95860-67P Crankshaft Degree Indicator.

Factory cautions flag several consequential repair mistakes. Pressing multiple transmission gears off together can damage the gears and countershaft, while reversed battery polarity on 1973-and-later models can damage the rectifier-regulator diodes. Late-1972-and-later SS and 1973-and-later SX shock absorbers are identified as nonserviceable assemblies, and the solid-state rectifier-regulator is replaced as a complete unit when defective.

Harley-Davidson service bulletins remain the stated source for interim engineering changes issued after the manual’s printed revisions. Fuel-system, charging-battery, wheel, steering, suspension, and brake repairs require secure motorcycle support and observance of the publication’s component-specific safety precautions.