1991-1992 Harley-Davidson Softail Factory Service & Repair Manual (P/N 99482-92)
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Harley-Davidson Models Covered & Key Technical Specifications
Models: 1991 Harley-Davidson Softail, 1992 Harley-Davidson Softail
Sub-models / Variants: FLSTC, FLSTF, FXSTC, FXSTS, Heritage Softail Classic, Fat Boy, Softail Custom, Springer Softail
Trade Names: Heritage Softail, Fat Boy, Softail Custom, Springer
Model Years: 1991–1992
Serial Numbers: 1992 VIN pattern: 1HD1BJL1NY010000 (Model Year 1992 sample)
Technical Data:
- Engine Displacement: 81.6 cu. in.
- Standard Engine Speed: 2500 RPM
- Engine Torque Maximum: 82 ft-lbs
- Crankcase Depth Maximum: 4.250 in.
- Fuel Tank Capacity: 5.2 Gallons (Total, FXSTC), 4.2 Gallons (Total, FLSTC/F/FXSTS)
- Brake Disc Diameter (Front/Rear): 11.5 in.
- Brake Disc Runout Maximum: 0.008 in.
- Wheel Bearing End Play: 0.002–0.006 in. (1992 models), 0.004–0.018 in. (1991 models)
Harley-Davidson Manual Features & Content Preview
- Covers 1991–1992 Harley-Davidson Softail models, documenting engine, chassis, electrical, and fuel-system specifications for the FXST and FLST model lines (including FLSTC, FLSTF, FXSTC, and FXSTS variants).
- Official Harley-Davidson publication P/N 99482-92, first edition dated June 1991.
- Documents key mechanical systems with 49 exploded-view diagrams, 12 electrical system overview figures, and multiple chassis adjustment tables.
- Serves as the primary factory documentation for the Evolution-engine generation, essential for matching torque values during routine maintenance or comprehensive component repair.
Component and System Documentation
When working on early 90s Evo engines, having exact factory specifications is non-negotiable. This manual provides direct technical guidance for the complete motorcycle without unnecessary fluff. Major sections break down the chassis, engine, fuel delivery, electric starter, drive, transmission, and electrical systems. It is organized specifically to assist technicians and dedicated DIYers with rapid parts identification and accurate system alignment on the lift. By listing specialty tool requirements alongside correct replacement components, this guide eliminates guesswork and streamlines daily workshop operations. Working on heavy motorcycles inherently involves physical risks and high-speed mechanical elements. Securing the bike properly and adhering strictly to documented factory tolerances is vital to ensure the machine remains safe and reliable for the road.
Specification Highlights
The technical data sections preview the critical tolerances necessary for professional repair evaluation. For instance, the text explicitly lists the axle nut torque at 60–65 ft-lbs and sets the brake disc screw torque at 16–24 ft-lbs. While you won't find intake valve clearance specifications here, the document thoroughly outlines specialized diagnostic parameters. Need to adjust the front end? The guide details the proper steering head bearing adjustment using the 1-2 inch fall-away method. Ultimately, having these precise numbers readily available allows mechanics to verify structural integrity without searching through secondary sources.
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