Harley-Davidson XLH Sportster Service Manual 1986–1990 — comprehensive repair, maintenance, parts and wiring diagrams for XLH models (09484-90).
Detailed workshop manual for XLH 1986–1990 Sportsters covering engine and transmission rebuilds, torque specs, valve adjustments, carburetor tuning and sync, ignition timing, clutch service, brake and suspension maintenance, electrical troubleshooting, wiring schematics, exploded parts diagrams and part numbers. Includes step-by-step procedures, illustrations and maintenance schedules—ideal for DIY owners, restorers and professional mechanics working on vintage Harley-Davidson Sportster models.