1970–1978 Harley-Davidson Electra Glide & Super Glide Service Manual (P/N 99482-78)

• Official 251-page Harley-Davidson Motor Co. publication (Part No. 99482-78, dated 1978)
• Covers 1970–1978 Harley-Davidson Electra Glide and Super Glide motorcycles, including FL/FLH 1200, FX/FXE 1200, and Low Rider FXS 1200 configurations
• Contains 56 exploded-view assembly diagrams, 5 lubrication/service charts, and 4 specialized fastener torque-spec tables
• Provides precise factory tolerances directly in a digital PDF format, allowing mechanics to accurately set critical clearances and prevent costly secondary teardowns at the workbench
• Details complete rebuilds for Tillotson, Bendix, and Keihin carburetors, plus Prestolite and Hitachi starter motors
• Explains troubleshooting for Tympanium rectifier-regulators, four-speed transmissions, three-speed reverse gearboxes, and hydraulic tappets
• Serves as the final OEM reference for the 1970–1978 Shovelhead era, documenting the transition from earlier 1970 FL specs to the refined 1978 FXS Low Rider configurations

Chassis and Engine Documentation

The service manual contains detailed sections dedicated to the FL and FX chassis, engine overhauls, transmission maintenance, and electrical system diagnostics. It documents the specifics of the 1200cc V-twin platform, detailing lubrication flow, crankcase and gearcase service, alongside fuel system calibration. You will find extensive descriptive information on steering head bearing adjustments, fork maintenance including re-bushing procedures, and complete wheel alignment. For independent mechanics and DIYers looking to avoid expensive dealership labor rates, the text provides step-by-step instructions to fix complex assemblies in-house. These include comprehensive workflows for lacing and truing 16-inch and 19-inch spoked wheels, completely rebuilding the constant-mesh gearboxes, and overhauling front fork shock absorbers. The manual also outlines fiberglass care, detailing surface finishing and structural repair specifications for body components. Always adhere to standard workshop safety protocols when lifting the heavy chassis or handling high-amperage electrical systems.

Technical Data and Specifications Preview

This publication outlines comprehensive torque requirements for all major fasteners, noting crankcase studs at 12–15 ft-lbs and primary chain case bolts at 50–60 ft-lbs. Intake valve clearance is specified at 0.0018–0.0038 in, while the oil system capacity is 4 quarts. Detailed wiring diagrams are provided for 1970–1978 electrical systems, covering ignition timing and spark plug heat ranges. To further support precise testing, the content incorporates specific visual aids like a Regular Service Intervals Chart, an Engine Sprocket Spacer Table, Front Fork Exploded Views, a Bulb Chart, and a Wheel Alignment Diagram. When servicing these specific Shovelhead models, technicians must navigate several known mechanical traps. For instance, achieving correct primary chain alignment requires a highly specific engine sprocket spacer calculation based on alternator rotor recess measurements; failing to set this accurately will rapidly degrade the drivetrain. Additionally, the early FL wheel hub bearing locknut utilizes a unique left-hand thread that must be properly staked to the hub to prevent catastrophic loosening during operation. By offering a complete overview of factory specifications, this document delivers high informational value for professional technicians and dedicated mechanics needing precise reference data on the shop floor.