2003 Harley-Davidson Softail FXST, FXSTB, FXSTC, FLSTF, FLSTS, FXSTD Service Manual

Get your 2003 Harley-Davidson Softail back in shape with this Service Manual. Covers FXST, FXSTB, FXSTC, FLSTF, FLSTS, FXSTD models. Part number 99482-03.

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Harley-Davidson Models Covered & Key Technical Specifications

Models: FXST, FXSTB, FXSTC, FLSTF, FLSTS, FXSTD
Sub-models / Variants: FLSTC, FLSTF, FLSTS, FXST, FXSTB, FXSTD, Springer Softail, Standard, Night Train, Fat Boy, Heritage Softail Classic
Build Years: 2003
Serial Numbers: V.I.N. range 1HD1BRY103Y110000 (Example)
Technical Data:

  • Engine: 45-degree V-twin, 4-cycle, 2-cylinder
  • Displacement: 88 cubic inches (1450 cc)
  • Bore: 3.75 in.
  • Stroke: 4.00 in.
  • Idle Speed: 950–1050 RPM
  • Oil Pump: Twin gerotor, dual scavenge, dry sump
  • Transmission Lubricant Capacity: 20–24 oz. (591.5–709.8 ml)
  • Primary Chaincase Lubricant Capacity: 26 oz. (768.9 ml)
  • Brake Fluid Type: D.O.T. 5 SILICONE BRAKE FLUID
  • Spark Plug Type: No. 6R12
  • Spark Plug Gap: 0.038–0.043 in. (0.97–1.09 mm)
  • Spark Plug Torque: 12–18 ft-lbs (16.3–24.4 Nm)
Technical Specifications
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Document Number / Seller:
29391 / Joseph Young
File Size:
38.74 MB
File Type:
PDF
Language:
English
Pages:
946
Printable:
Yes
Category:
Bike
Last updated / verified
Jul 10, 2025

Harley-Davidson Manual Features & Content Preview

2003 Harley-Davidson Softail Service Manual Preview

  • Covers 2003 Harley-Davidson Softail models FXST, FXSTB, FXSTC, FLSTF, FLSTS, and FXSTD with both carbureted and EFI configurations
  • Official Harley-Davidson publication P/N 99482-03
  • Documents maintenance, chassis, engine, fuel system, starter, drive, transmission, electrical, and fuel injection systems through 946 pages
  • File delivered as a direct download the moment payment clears
  • Indexed PDF search covers every chapter and appendix
  • Includes 68 exploded-view diagrams and 18 torque specification tables for critical fasteners
  • This 2003 edition serves as the factory reference for the Twin Cam 88B power train, providing specific data for the carburetor and EFI engine management setups

Documentation Walkthrough

The 2003 Harley-Davidson Softail service manual organizes maintenance and repair data into nine primary sections, spanning from basic maintenance and chassis adjustments to complex engine and fuel system diagnostics. The document details procedures for servicing the V-twin engine, transmission, and primary chaincase, including essential fluid capacities and component inspection criteria. Detailed chapters for the starter, drive, and electrical systems ensure that the mechanical and electronic requirements of the Twin Cam 88B are clearly documented for the user.

Torque, Fluid, and Technical Specifications

Specification tables for the 2003 Harley-Davidson Softail provide essential references, such as the 14–21 ft-lbs (19.0–28.5 Nm) torque specification for the transmission drain plug. Brake disc lateral runout is documented at a maximum of 0.008 in. (0.2 mm) across all models. Engine oil capacity is set at 3.5 quarts (3.31 liters) including the filter, while primary chaincase oil is listed at 26 oz. (768.9 ml). For those seeking further information on factory documentation, how factory workshop documentation is structured provides valuable insight. Maintenance intervals are outlined for 5,000-mile increments, requiring specific attention to rear belt deflection and wheel spoke tension. This official 946-page Harley-Davidson publication provides the necessary mechanical, chassis, electrical, and fuel-management specifications for the 2003 Softail model range, covering both carbureted and fuel-injected Twin Cam 88B engines.

Manual FAQ, Purchase & Download Details

What publication numbers and editions are associated with this 2003 Softail service document? keyboard_arrow_down

Document references Service Manual Part Number 99482-03 and Electrical Diagnostics Part Number 99498-03. It contains 946 pages covering maintenance, engine, fuel system, chassis, and electrical diagnostics for the 2003 model year.

Is the document inclusive of electrical system, starting, charging, and wiring reference sections? keyboard_arrow_down

Manual contains dedicated sections for electrical systems, including starting and charging, instrument references, and wiring diagrams for the covered Softail models.

Are chapters for engine maintenance, primary drive, and transmission lubrication included in this manual? keyboard_arrow_down

Manual covers engine systems, primary chaincase, and transmission maintenance in detail. These sections include specifications for oil types, capacities, and inspection criteria.

Which chapters contain technical information regarding tightening specifications, component tolerances, and clearance references? keyboard_arrow_down

Specification tables within the Maintenance and Engine sections list tightening torque values for critical fasteners, spark plug gaps, and various engine clearances.

Can this document be used to identify component layouts through exploded views or parts illustrations? keyboard_arrow_down

Manual includes various component breakdown diagrams and illustrations, such as the rear brake pedal assembly or oil tank drain plug configuration. These diagrams show the arrangement of hardware, O-rings, and bushings for visual reference. This aids in locating parts during general maintenance activities.

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