1991–1992 Harley-Davidson Softail Factory Service & Repair Manual (P/N 99482-92)

• Coverage and document identity: Covers the 1991–1992 FLSTC, FLSTF, FXSTC, and FXSTS Softail models, with VIN model designations BJ, BM, BK, and BL respectively. Harley-Davidson factory publication P/N 99482-92; 348 PDF pages.
• Chassis and brake repair: Separates 1991 and 1992 laced and disc wheel/hub procedures, with wheel-bearing inspection, spoke lacing and truing, rim runout, tire work, vehicle alignment, master-cylinder and caliper repair, and hydraulic brake bleeding.
• Forks, steering, and suspension: Includes telescopic-fork service for FXSTC/FLSTC/FLSTF, complete FXSTS Springer-fork disassembly and assembly, rocker-bearing adjustment, steering-head repair, rear-fork removal, and rear-shock adjustment and disassembly.
• V² Evolution engine work: Covers troubleshooting plus top-end and bottom-end repair, including cylinder-head, piston, oil-pump, tappet, timing-gear, crankcase-bearing, flywheel, and oil-tank procedures.
• Fuel, starting, drive, and transmission systems: Details the constant-velocity carburetor, fuel tank and supply valve, exhaust system, 1992 California emissions equipment, starter testing and overhaul, primary chain, belt and sprockets, clutch, shifter components, shaft assemblies, side-door bearings, and transmission case.
• Electrical diagnosis and reference data: Provides ignition and VOES testing, charging-system and alternator checks, battery and lighting service, turn-signal microprocessor troubleshooting, four model/year wiring diagrams, specialty-tool part numbers, torque tables, capacities, service-wear limits, clearances, and electrical test specifications.

Component and System Documentation

The manual follows a consistent factory sequence: specifications, troubleshooting, adjustment or testing, removal, installation, disassembly, cleaning and inspection, repair, and assembly. Section 1 adds initial-service and regular-maintenance schedules, shop practices, fluid requirements, fastener-torque guidance, labeled left- and right-side model views, VIN decoding, and an illustrated specialty-tool catalog. This organization makes it possible to identify the correct assembly and test path before parts are removed.

Engine coverage goes well beyond tune-up information. It documents stripping the motorcycle for engine repair, cylinder-head removal and installation, push-rod installation, rocker-arm bushing and valve-guide work, valve-face and seat repair, cylinder and piston inspection, rod-bushing and connecting-rod repair, oil-pump troubleshooting, the 1992 oil-filter mount, tappet-guide alignment, timing-gear service, flywheel end-play adjustment, crankcase-bearing repair, flywheel rebuilding and truing, and oil-tank removal and installation. The related tables supply component torque values, service-wear limits, ignition-timing data, oil-pump pressure specifications, and bearing or running clearances.

Model-Year and Configuration Differences

The chassis section does not treat every Softail as the same build. It identifies different 1991 and 1992 wheel hubs, telescopic and Springer fork assemblies, model-specific rear brake master cylinders, calipers, fenders, headlamps, and cable routing. Early- and late-1991 rear brake pads require their matching abutment shims, while 1992 pads and discs use a different friction material; the manual specifically prohibits using 1992 pads on 1991 discs. Transmission-sprocket locking hardware and the complete wiring layouts are also separated by model year.

California 1992 machines receive their own air-cleaner backplate coverage, evaporative-emissions troubleshooting, vacuum-operated-valve and hose-routing information, and backplate-solenoid electrical tests. These sections are particularly relevant when a standard 1992 procedure or replacement part does not match the emissions-equipped motorcycle on the lift.

Diagnostic References and Special Tools

Diagnostic work includes carburetor vacuum-piston checks, starter-current draw and assembled-starter tests, armature and field-winding tests, VOES and ignition-coil testing, charging-system output and stator checks, battery load testing, and turn-signal fault tables. Representative figure titles show the repair depth: “Adjusting ‘Fall-away,’” the two-part “Springer Fork,” “Timing Gears with Marks Aligned,” “Schematic - California Evaporative Emissions Control System - 1992,” “Starting Circuit,” and “Mainshaft, Countershaft Assembly.”

The electrical section ends with four full-page schematics: 1991 FLSTC (S-1), 1991 FXSTC/FXSTS/FLSTF (S-2), 1992 FLSTC (S-3), and 1992 FXSTC/FXSTS/FLSTF (S-4). The tool catalog identifies job-specific equipment by number, including the HD-35381 belt tension gauge, H-D 38515 clutch spring compressor, HD-35316 main-drive-gear remover/installer, HD-39301 and HD-39302 steering-head race tools, and HD-96650-80 flywheel truing stand.

Repair Cautions and Scope

Several cautions are specific to these motorcycles. Mixing early- and late-1991 rear-pad/shim combinations can cause improper brake operation, and 1992 pads on 1991 discs can sharply reduce pad life. A drive belt must not be folded into a tight loop because the bending stress can weaken it and cause premature failure. The transmission shafts must not be driven out with a hammer; that method damages the side-door bearings.

Support the motorcycle securely before wheel, fork, brake, engine, primary-drive, or transmission repair, and follow the specified spring-compressor, puller, press, and brake-fluid practices. The publication also directs technicians to separate Harley-Davidson Service Bulletins for interim engineering changes; those bulletins are outside the scope of this PDF.