Buell Ulysses XB12X 2006 Service Manual (P/N 99494-06Y)

Buell’s 2006 Ulysses XB12X Service Manual, P/N 99494-06Y, covers maintenance, mechanical repair, fuel-injection diagnosis, and electrical service for this model.

Searchable PDF, Bookmarks, and Wiring Detail

Search and diagram detail: PDF text search is available, with embedded bookmarks for the service sections and appendices. Small wire-color codes, connector IDs, and pin labels in the dense main-harness diagrams require zooming for comfortable reading.

One printable English PDF contains 638 pages, including 64 pages of appendices A–E, the title page, seven blank pages, and one mostly blank page carrying print information. The appendices precede the main service chapters in this file.

Engine, Drivetrain, and DDFI Service Coverage

These selected service topics outline part of the manual’s coverage. Storage procedures and auxiliary power-outlet service are further examples of the material included.

• Maintenance: Service schedules, lubrication, primary-chain adjustment, clutch adjustment, brake inspections, suspension settings, ignition timing, and throttle position sensor setup.

• Engine repair: Compression and leakdown testing, engine rotation and removal, cylinder-head service, piston inspection, cam gears, oil-pump service, and crankcase disassembly.

• Chassis and brakes: Front-fork rebuilding, steering-head bearing replacement, wheel-bearing service, swingarm removal, master-cylinder repair, caliper service, and hydraulic brake bleeding.

• Drive and transmission: Clutch disassembly, primary-drive service, drive-belt replacement, crankcase separation for transmission removal, gear inspection, bearing replacement, and reassembly.

• DDFI diagnosis: Check-engine lamp code retrieval, no-start and misfire troubleshooting, fuel-pressure testing, ECM circuit checks, and sensor-specific diagnostic flowcharts.

• Starting and electrical systems: Starter and solenoid testing, starter-interlock diagnosis, charging-system checks, connector repair, wiring diagrams, and interactive exhaust troubleshooting.

Suited to technicians and experienced owners equipped for mechanical disassembly and electrical testing; some procedures require dedicated service tools or Digital Technician.

Maintenance, Engine Repair, and Chassis Work

The maintenance charts bring service intervals, fluid specifications, and adjustment references together. Engine-oil recommendations distinguish ambient-temperature conditions, while the primary-chain section separates hot- and cold-engine checks.

Engine coverage extends into valve and valve-seat inspection, cylinder measurements, hydraulic lifters, crankcase breathing, and lubrication-system service. New-component specifications and service wear limits support decisions about reusing or replacing internal parts.

The 43 mm front-fork chapter includes damper disassembly, seal and bushing work, and oil-level setup. Steering-head bearing procedures identify the dedicated removal and installation tooling, including tool B-45521.

Always ensure you have the proper training or consult a certified mechanic before turning a wrench on safety-critical components.

Transmission Inspection and Assembly Cautions

The transmission chapters distinguish mainshaft and countershaft components, directional gears, and established wear patterns. This transmission requires no shimming.

The front axle and transmission mainshaft nut use left-hand threads; the manual flags the mainshaft nut’s thread direction to prevent removal damage. Its bearing-installation cautions also explain how excessive installer force can fracture the crankcase bearing-bore lip.

Fuel Injection and Market-Specific Systems

Dynamic Digital Fuel Injection (DDFI) coverage connects fault codes with circuit diagrams, connector references, and tests for the Electronic Control Module (ECM), Throttle Position Sensor (TPS), injectors, ignition coils, and cooling fan.

Breakout Box HD-42682 and Digital Technician HD-44750 are identified where applicable. Starter-circuit voltage-drop testing evaluates connections under load, helping distinguish poor connections from circuits that merely show voltage during an unloaded check.

Market-specific coverage: Evaporative-emissions service applies to California models. Appendix E covers the Active Intake System on Japanese models only, including cable adjustment, solenoid checks, TPS verification, and code 22 diagnosis.

The interactive exhaust sections cover actuator testing and cable adjustment. Incorrect cable routing at the frame lug can hold the muffler valve open and prevent normal operation.

Wiring Diagrams and Connector References

Appendix B includes the Main Harness, Engine Management Circuit, Lighting Circuit, Horn and Instruments Circuit, and Charging Circuits diagrams. AMP Multilock, Deutsch, and Packard connector sections cover terminal removal, installation, and crimping.

Appendix D adds hose and wire-routing illustrations, connecting electrical references with the physical routing needed during reassembly.

Examples of Ignition, Battery, and Fork Specifications

Ignition and electrical service: The maintenance chart specifies a 0.035 in. (0.9 mm) gap for the 10R12A spark plug. Battery terminal fasteners are specified at 72–96 in-lbs.

Fork setup: The XB12X assembly procedure specifies an oil level 4.45 in. (113 mm) below the top of the fork tube, with the damper rod bottomed, the fork fully compressed, and the spring not yet installed.