1958-1959 Harley-Davidson Duo-Glide FL / FLH 74 OHV Repair Manual

Harley-Davidson Duo-Glide 1958–1959 Service Manual

• Built for owners and technicians servicing the 1958–1959 Harley-Davidson Duo-Glide FL and FLH 74 OHV models
• Official Harley-Davidson publication P/N 99482-59, 1959 edition
• Contains 47 exploded-view diagrams and 110 numbered troubleshooting references
• Stored against your account so you can retrieve it after a hard-drive loss
• File link appears in your order confirmation straight away
• Page spreads stay legible when printed at original size
• Indexed PDF search covers every chapter and appendix
• This official 1959 release documents the factory specifications and assembly methods for the FL and FLH 74 OHV engine family, including variant sidecar configurations

Technical Documentation Scope

The 1958–1959 Harley-Davidson Duo-Glide FL and FLH service manual presents a technical layout of the motorcycle systems across eight core sections. The chassis documentation details wheel removal, steering damper adjustment, and frame alignment specifications. The engine assembly segment covers the 74 OHV powerplant, including cylinder head maintenance, valve train adjustment, and oil scavenger system operation. Fuel system and transmission chapters provide internal gear box timing, clutch plate specifications, and carburetor adjustment benchmarks.

Specification Highlights

Technical data within the 1958–1959 Harley-Davidson Duo-Glide manual provides precise service limits for shop-floor reference. The transmission main drive gear end play is specified at.003–.013 in. Oil pressure readings are documented at 35–38 pounds at speeds over 30 mph. Intake valve stem-to-guide clearance is listed at.002–.004 in. in the engine specification tables. Understanding factory workshop documentation is structured specifically for the 74 OHV engine series, with exploded views provided for the clutch, shifter fork, and hydraulic fork assemblies.

Note: This page is a contents overview for the manual. It does not provide repair or diagnostic instructions. An official 100-page Harley-Davidson factory workshop manual covering the 1958–1959 Duo-Glide FL and FLH, documenting engine, chassis, transmission, and fuel-delivery specifications for the 74 OHV engine build.