1959–1969 Harley Davidson Electra Glide / Duo-Glide Service Manual (P/N 99482-69)

• Covers 1959–1969 Harley-Davidson Duo-Glide and Electra-Glide motorcycles, with specifications and service data for FL and FLH models. Solo and sidecar gearing and tire data are included. Servi-Car material is limited to selected shared-component sections; for example, the Model MD carburetor subsection is specifically identified for 1966 and later Servi-Car models.
• This PDF contains the Harley-Davidson factory service manual identified as P/N 99482-69. Individual pages and sections carry revision dates extending through 3-69.
• Organized into six major divisions covering Product, Chassis, Engine, Transmission, Electrical, and Miscellaneous service. The material goes well beyond routine maintenance into engine overhaul, transmission repair, wheel and fork work, hydraulic brake service, fuel-system repair, and electrical testing.
• Electrical coverage includes separate factory wiring diagrams for the 1959 Duo-Glide, 1960 Duo-Glide, 1961–1964 Duo-Glide, 1965–1967 Electra-Glide, and 1968–1969 Electra-Glide electrical systems.
• Factory procedures include cylinder-head and valve repair, cylinder refinishing, piston and connecting-rod work, flywheel truing, crankcase bearing service, carburetor testing, clutch and gearbox overhaul, electric-starter repair, wheel truing, Hydra-Glide fork service, hydraulic brake bleeding, generator testing, ignition timing, and regulator checks.

Engine and Chassis Documentation

The engine section is built around the 45-degree, air-cooled overhead-valve V-twin with 73.66 cu. in. / 1,207 cc displacement, a 3-7/16 in. bore and 3-31/32 in. stroke. The specifications distinguish the FLH's 8:1 compression ratio from the FL's 7.25:1 ratio and provide factory fits, clearances, spring loads, bearing dimensions, ignition settings, oil-system data, and flywheel limits needed during serious repair work.

Internal service reaches well past top-end removal. Separate chapters cover rocker arms, valves and guides, cylinders and pistons, tappets, the oil pump, cam and breather timing, crankcases, connecting rods, flywheels, main bearings, and pinion- and sprocket-shaft assemblies. One important production change is shown directly in the crankcase material: the 1969 sprocket-shaft bearing arrangement differs substantially from 1968-and-earlier construction, with its own races, spacers, and retaining components.

Chassis coverage includes front and rear wheels, wheel-hub bearings, chains and sprockets, handlebars and controls, frame alignment, Hydra-Glide forks, rear suspension, mechanical and hydraulic brakes, seat components, and fiberglass body repair. The wheel-hub section also separates the 1966-and-earlier roller-bearing design from the revised 1967-and-later hub.

The manual identifies dedicated Harley-Davidson service tools rather than treating these jobs as generic mechanical work. Examples include the P/N 96254-50 fork slider bushing tools, P/N 96740-36 connecting-rod lapping arbor, P/N 96921-52 oil-pressure gauge, P/N 96950-68 chain-case vacuum gauge, and P/N 95960-41A clutch-hub and chain-housing puller.

Representative illustrations show the actual repair depth, including “Determining Engine Sprocket Spacer Thickness to Secure Chain Alignment,” “Hydra-Glide Fork - Exploded View,” “Engine Cutaway (1967 Model Shown),” “Sprocket Shaft Bearing Assemblies - Section View,” “Mainshaft Assembly - Exploded View,” and the “1968-69 Electra-Glide Wiring Diagram.”

Transmission, Fuel, and Electrical Service

Transmission information covers the constant-mesh four-speed unit, foot- and hand-shift arrangements, and the optional three-forward/one-reverse configuration. Clutch specifications, starter mechanisms, shifter linkage, main-drive-gear oil seal service, shifter forks, mainshaft and countershaft assemblies, gearcase repair, and transmission adjustment data are included. The manual also documents the 1965-and-later electric-start system and its Bendix-type starter drive.

Fuel-system chapters cover the Model HD diaphragm carburetor with automatic economizer and accelerator pump as well as Model M and Model DC carburetors, with separate exploded views, adjustment data, leakage checks, and repair information. The Model MD material is specifically marked for 1966-and-later Servi-Car, an important distinction for buyers who need to separate shared Servi-Car component information from the manual's primary Duo-Glide/Electra-Glide coverage.

Electrical sections address switches, lamps, standard and fan-cooled generators, circuit breakers, ignition coils, spark plugs, regulators, batteries, horns, and starter motors. Both Delco-Remy and Prestolite starter service appears in the later electric-start material. Generator output and component tests are accompanied by year-specific wiring schematics rather than a single generalized diagram.

There is also a useful serial-specific ignition distinction. On 1961 Duo-Glide engines prior to Engine No. 61FLH 7087, the manual identifies a different timing-reference situation and specifies Spark Timing Gage P/N 95885-61. The ignition system itself also changes by production period: 1960-and-earlier and 1965-and-later arrangements use a different breaker-point/cam configuration from the 1961–1964 system.

Key Specifications and Repair Notes

• Oil tank capacity: 1 U.S. gallon. Transmission lubricant capacity is 1-1/2 pints. Fuel capacity is 3-1/2 U.S. gallons on earlier models and 5 U.S. gallons for 1965 and later models.
• Primary chain adjustment: 5/8–7/8 in. slack with the engine cold and 3/8–5/8 in. with the engine hot.
• Engine assembly data: cylinder-head bolts are specified at 65 ft-lb; flywheel gear-shaft and sprocket-shaft nuts at 100 ft-lb each; crankpin nuts at 175 ft-lb.
• 1965-and-later chain-case test: the factory vacuum check calls for at least 12 in. of water at 1,500 rpm, providing a defined test point for locating air leakage after engine or starter-related repair.

Several cautions in the manual are tied directly to expensive components. On models using the primary-chain tensioner, Harley-Davidson warns against repairing the chain with a repair link because a subsequent chain failure can damage the crankcase. The oil-pump fasteners are limited to approximately 50 in-lb and no more than 60 in-lb; excessive tightening can squeeze the plastic gaskets, remove pump-gear side clearance, and seize or damage the pump. The electrical section also warns that returning a generator to service with incorrect polarity can burn relay points, discharge the battery, and damage the generator.

Factory tolerances, test values, and safety procedures should be followed whenever these systems are dismantled, adjusted, tested, or returned to service.