2001 Harley-Davidson Dyna FXDWG, FXDL, FXD, FXDX, FXDXT Service & Electrical Diagnostics Manual Set (P/N 99481-01A)

This 2001 Harley-Davidson Dyna Manual Set combines the Service Manual, P/N 99481-01A, with Electrical Diagnostics, P/N 99495-01, for FXDWG, FXDL, FXD, FXDX, and FXDXT models with the carbureted Twin Cam 88 engine.

• Engine repair: Top- and bottom-end overhaul, cylinder-head service, cam support plate work, oil-pump inspection, and compression and cylinder-leakage tests.

• Fuel system: CV carburetor disassembly, vacuum-piston and accelerator-pump inspection, float adjustment, and California evaporative-emissions component service.

• Primary drive and transmission: Wet multi-disc clutch repair, compensating-sprocket service, drive-belt replacement, and mainshaft, countershaft, and shifter-fork work.

• Brakes and wheels: Caliper overhaul, master-cylinder service, brake bleeding, wheel lacing and truing, and sealed wheel-bearing replacement.

• Suspension and steering: Model-specific fork overhaul, steering-head bearing adjustment, and spring-preload and damping settings for the applicable suspension.

• Starting and charging: Electric starter and jackshaft overhaul, solenoid testing, stator removal and testing, regulator diagnosis, and battery load testing.

• Electrical troubleshooting: TSM/TSSM and engine-management flowcharts, connector pinouts, wiring diagrams, and diagnostic trouble-code procedures.

It is written for users handling basic maintenance and repair, and for professional Harley-Davidson technicians performing major work with the specified specialty tools.

Twin Cam 88 Engine and Drivetrain

The service manual's eight sections cover routine engine oil and filter service, primary-chain maintenance, transmission lubrication, and internal repair. Cylinder-head work extends to valve-guide replacement and valve-seat refacing, with cylinder boring and honing procedures and component wear limits. Maintenance intervals and component-specific torque tables are included.

Cam and crankshaft service: The Engine Oil Flow – Cam Support Plate/Right Crankcase Half drawing accompanies lubrication-system coverage. Flywheel and connecting-rod work includes inspection and assembly replacement; lower connecting-rod bearing service requires replacement of the flywheel assembly.

The cam-chain section identifies Cam Chain Tensioner Unloader HD-42313 and explains how uncontrolled tensioner release with the chains and sprockets removed can stretch the spring or crack the shoe.

Clutch and gearbox: The Mainshaft/Countershaft Assembly exploded view supports gear, bearing, and shaft service. Clutch coverage distinguishes plate inspection from hub-and-shell bearing work; the primary-chaincase section warns that reusing the removed Print-O-Seal cover gasket can cause leaks.

CV Carburetor and California EVAP System

Carburetor coverage includes the enrichener, vacuum diaphragm, fuel inlet valve, and float-setting checks. Troubleshooting tables separate poor idle, hard starting, and high-speed performance complaints.

California models have separate charcoal-canister removal and installation procedures, hose-routing information, and a Schematic – CA Evaporative Emissions Control System drawing.

Chassis, Forks, and Brake Service

Fork procedures distinguish FXD/FXDL, FXDWG, and the adjustable 39 mm cartridge-valve forks on FXDX/FXDXT. The suspension section documents steering-head fall-away checks, fork-oil replacement, rear spring-preload cam settings, and the Sport models' damping adjustments.

Wheel service includes lacing patterns, hub-offset checks, and lateral and radial wheel and tire runout limits. Rear shocks are replacement assemblies apart from their mounting bushings.

Brake repair: Front and rear caliper procedures include piston and seal inspection. Master-cylinder coverage distinguishes front-unit rebuilding from rear cartridge-body replacement when piston seals leak.

Brake work and spring-loaded assemblies require the training, tools, and safety precautions specified in the manual.

Electrical Fault Isolation and Security Systems

Voltage-drop tests help isolate poor connections in starting circuits before components are condemned. The diagnostics manual covers no-start and misfire complaints, MAP and crank-position sensor faults, and current versus historic trouble codes.

Diagnostic equipment: Procedures use Scanalyzer HD-41325 and Breakout Box HD-42682. TSM/TSSM Connector Pins and the MAP Sensor Circuit Diagram pair terminal identification with the relevant test charts.

TSM/TSSM coverage includes turn-signal faults, key-fob assignment, personal-code programming, and configuration after power interruption. Ignition-module coverage is diagnosis and replacement; the sealed module is not internally repairable.

Separate main-harness drawings distinguish FXDWG from the other Dyna models and identify domestic/international wiring details.

A Preview of Steering and Ignition Test Values

These examples are a small selection of the adjustment and electrical test data in the set.

The steering-head check specifies fall-away mark separation of 1.0–2.0 in. (25.4–50.8 mm), with the motorcycle level and the front end fully suspended under the stated test conditions.

For the removed ignition coil, normal winding resistance is 0.5–0.7 ohms on the primary side and 5.5–7.5 kilohms on the secondary side.

Searchable PDF, Bookmarks, and Publication Breakdown

Search and diagram navigation: Searchable text and embedded bookmarks cover both publications, including wiring sections. Small connector numbers and wire-color labels in the dense diagrams need zooming for comfortable reading.

Delivered as one printable, 670-page PDF containing both publications:

One combined title/contents page completes the total. The publication counts already include 14 blank pages and 10 notes pages; these are not additional pages.