1958–1959 Harley-Davidson Duo-Glide 74 OHV service & repair manual — complete shop manual for maintenance, troubleshooting, specs and restoration.
Detailed workshop guide for the Duo-Glide 74 OHV covering engine overhaul, transmission service, carburetor tuning, electrical wiring diagrams, ignition and charging systems, brake and suspension adjustments, torque values, exploded parts illustrations and OEM specifications. Ideal for vintage motorcycle restoration, sourcing parts, routine maintenance and accurate diagnostics. Cover design by Sarah Williams.