Harley-Davidson Dyna Super Glide, Low Rider & Wide Glide Service Manual (2003)

2003 Harley-Davidson Dyna Service Manual - Comprehensive Repair & Maintenance Guide

This official 2003 Harley-Davidson Dyna Service Manual (P/N 99481-03A) is the definitive technical resource for the 100th Anniversary Dyna lineup. Engineered for both the dedicated DIY owner and the professional Harley-Davidson technician, this manual provides factory-approved repair methods and precise technical specifications required to maintain the legendary performance of your Twin Cam 88 machine.

Complete Model Coverage

This manual is specifically authored for the following 2003 Dyna models:

• FXD Dyna Super Glide (2003): The classic, stripped-down performer.
• FXDX Dyna Super Glide Sport (2003): Featuring adjustable cartridge front forks and high-performance rear shocks.
• FXDXT Dyna Super Glide T-Sport (2003): The touring-ready sport model with integrated saddlebags and an adjustable windshield.
• FXDL Dyna Low Rider (2003): Characterized by its low-slung profile and raked-out front end.
• FXDWG Dyna Wide Glide (2003): The iconic custom-style factory bobber with forward controls and wide-spaced 21-inch laced front wheel.

Essential Technical Data & Identification

Proper identification is the first step in any service task. This manual details how to locate and decode your Vehicle Identification Number (V.I.N.):

• Full 17-digit V.I.N.: Stamped on the right downtube socket of the steering head and featured on a label on the right front downtube.
• Abbreviated V.I.N.: Stamped on the left side crankcase at the base of the cylinders (e.g., GEV3110000 for a 2003 model).
• Serial Ranges: Sequential numbers start at 110000.

Professional-Grade Service Sections

• Section 1: Maintenance – Covers the critical 1,000-mile break-in service, 5,000-mile intervals, and specific winter lubrication procedures to prevent sludge and ice formation in the oil pan.
• Section 2: Chassis – Detailed instructions for wheel lacing (16", 19", and 21" rims), brake system overhauls using D.O.T. 5 Silicone Brake Fluid, and complex vehicle alignment procedures.
• Section 3: Engine – In-depth service for the Twin Cam 88, including top-end overhaul (rocker arms, cylinder heads, pistons) and bottom-end cam compartment service (cam chain tensioners and oil pump operation).
• Section 4: Fuel System – Comprehensive troubleshooting for the C.V. carburetor, fuel tank vapor valves, and evaporative emissions controls (CA models).
• Section 5: Electric Starter – Diagnosis and repair of the starter system, including the jackshaft and solenoid assemblies.
• Section 6: Drive – Primary chain adjustment, primary lubricant replacement (26 oz wet capacity), and drive belt wear analysis.
• Section 7: Transmission – Full 5-speed transmission service, from shifter linkage adjustment to mainshaft/countershaft removal.
• Section 8: Electrical – Complete wiring diagrams, ignition module timing, and troubleshooting for the TSM/TSSM (Turn Signal Module).

Specialized Content for Performance Tuning

Gain an edge with technical insights found only in the factory documentation. This manual provides the exact factory suspension settings for the FXDX and FXDXT models, including preload, compression, and rebound damping adjustments. You will also find critical spark plug analysis guides to diagnose combustion issues based on electrode deposits.

Why Choose This Manual?

Unlike generic repair guides, this service manual uses a sequential numbering system (e.g., 1.6 BRAKES) for quick cross-referencing. It includes Appendix A for specialty tool requirements (Kent-Moore/SPX), Appendix B for electrical connector locations and wiring, and Appendix C for precise metric conversions. This guide ensures your 2003 Dyna remains safe, reliable, and true to the Harley-Davidson heritage.