Harley-Davidson FX/Softail Service & Repair Manual 1985–1990 (P/N 99482-90)

Harley-Davidson factory service and repair manual P/N 99482-90 covers the applicable 1985–1990 FX/Softail configurations for FXEF, FXSB, FXWG, FXST, FXSTC, FLST, FLSTC, FLSTF, and FXSTS motorcycles. Procedures are separated by model, production change, and installed equipment.

Bookmarks, Text Search and Wiring Detail

Navigation and diagram detail: Embedded bookmarks link to the main sections and wiring diagrams. PDF text search is unavailable. Small component labels and wire-color codes in the checked wiring diagrams are readable with zoom; full-page viewing is less suitable for the smallest details.

One printable, English-language 422-page PDF, including the original cover, preliminary pages, section dividers, and nine notes pages.

Evolution Engine, Drivetrain and Chassis Repair

The following selected topics show the repair and diagnostic coverage rather than reproduce the full contents. Other subjects include storage preparation and speedometer/tachometer replacement.

• Engine diagnosis and overhaul: Compression and cylinder-leakage tests, cylinder-head and rocker-box service, valve work, oil-pump overhaul, flywheel rebuilding, and main-bearing service.

• Transmission and primary drive: Four-speed and five-speed repair, kick-start components, clutch disassembly and adjustment, primary chaincases, and secondary chain and belt service.

• Wheels and alignment: Laced, cast, and disc wheel service, spoke lacing and truing, wheel-bearing inspection, rim runout checks, and vehicle alignment.

• Brakes and suspension: Hydraulic master-cylinder and caliper service, brake bleeding, telescopic and Springer fork repair, swing-arm service, and rear-shock replacement or adjustment.

• Fuel and emissions: Carburetor troubleshooting, disassembly and adjustment, vacuum-piston checks, fuel-valve service, and California evaporative-emissions schematics and hose routing.

• Starting and electrical diagnosis: Starter-motor and solenoid tests, ignition fault charts, charging-system checks, battery testing, and model-specific full-page wiring diagrams.

• Maintenance and workshop references: Maintenance schedules, general troubleshooting, lubricant guidance, torque tables, wear limits, electrical test specifications, and an illustrated specialty-tool index.

This manual supports shop technicians handling major repair work and experienced owners performing maintenance and component service with the specified tools and measuring equipment.

Engine Diagnosis and Internal Repair

Fault isolation: The engine chapter addresses valve-train noise, smoking, and high oil consumption. Compression and cylinder-leakage test guidance distinguishes ring, valve, and head-gasket problems before internal repair is planned.

Top-end work: Step-by-step procedures cover stripping the motorcycle for engine repair, rocker-arm bushing replacement, valve-guide and seat repair, pushrod measurement, and cylinder and piston inspection. Cylinder boring and honing, rod-bushing service, and connecting-rod inspection extend the coverage beyond routine maintenance.

Lubrication and lower end: Oil-pump diagnosis and rebuilding, tappet-guide alignment, cam and timing-gear installation, crankcase work, cylinder-stud changes, and main-bearing race service have dedicated procedures. The manual distinguishes the late-1985 one-piece sprocket-shaft/flywheel arrangement and the late-1989 one-piece pinion-shaft/flywheel design with its replaceable inner bearing race.

Illustrations include Cylinder Head, Cylinder and Piston – Exploded View, Timing Gears with Marks Aligned, and flywheel truing and misalignment views. Pushrod installation includes a warning about valve damage if the engine is turned before the hydraulic lifters have bled down.

Wheels, Brakes and Suspension Changes

Wheel procedures distinguish 16-, 19-, and 21-inch laced assemblies, cast or disc wheels, and model-specific wheel-offset alignment data. Rear master-cylinder and caliper procedures are separated around the 1987 1/2 production change; later rear master-cylinder cartridges are replaced rather than rebuilt internally.

Steering coverage distinguishes the through-1988 fork-stem and bracket assemblies from the late-1988-and-later Softail steering head. Springer service identifies the mid-1989 rocker-pivot-stud revision and its different washer arrangement.

The Rear Swing Arm and Shock Assembly – Softail Models drawing accompanies the suspension procedures. The sealed 1988-and-earlier Softail shock/reservoir system is non-repairable; disconnecting its hose loses the charge, and damaged shock/reservoir components are replaced together. The 1989-and-later units have separate preload-adjustment coverage.

These configuration distinctions support parts, tool, shim, spacer, and inspection-procedure selection before disassembly.

Carburetors and California Emissions

Fuel-system coverage separates the 1989-and-earlier carburetors from the 1990 CVH carburetor. The later section adds vacuum-piston troubleshooting and operation checks, diaphragm inspection, and enrichener and float adjustment alongside carburetor rebuilding.

California evaporative-emissions coverage is divided by year, with canister and vapor-valve installation, vacuum-operated valve and reed-valve checks, schematics, and hose-routing drawings. Fuel-tank removal and inspection and air-cleaner service are also documented.

Starters, Clutches and Transmission Assemblies

Production differences: Starter procedures separate 1988-and-earlier systems from 1989-and-later units, with distinct 1989 and 1990 jackshaft arrangements. The Starter Operation drawing accompanies the system explanation and diagnostic material.

Drive coverage distinguishes 1988-and-earlier versus 1989–1990 primary chaincases and 1989-and-earlier versus 1990 clutch assemblies. Chain and belt final drives, the 1985 FXEF electric-start side cover, and kick-start-only components receive separate treatment.

Internal transmission work includes shifter-fork adjustment, gear and shaft inspection, and side-door bearing replacement. Side Door, Mainshaft and Countershaft – Final Assembly shows the completed five-speed assembly. Press-work cautions explain how unsupported inner bearing races or an unsupported side door can damage the bearings and door.

Ignition, Charging and Wiring Diagrams

Electrical diagnosis includes continuous no-spark and intermittent ignition fault charts, module and sensor resistance tests, V.O.E.S. checks, ignition-coil tests, alternator output checks, and battery load and hydrometer testing. Charging specifications distinguish the earlier and later systems.

Wiring diagrams cover early and late 1985 FXSB/FXEF; early 1985 and late 1985–1986 FXWG/FXST/C; the 1986 1/2 FLST; 1987–1988 FLST and FLSTC; 1987–1988 FXST/C with the 1988 1/2 FXSTS; and the 1989–1990 families. The later diagrams distinguish FXST/C/S with the 1990 FLSTF, FLSTC, and FLST, including the 1989–1990 FLST layout.

Factory Tools and Service References

Component sections place torque tables, capacities, lubricants, wear limits, shaft and gear end-play data, brake inspection criteria, carburetor settings, starter limits, and electrical test values beside the relevant work.

Tool references include the HD-34813 Rowe Flywheel Rebuilding Jig, HD-35381 Belt Tension Gauge, HD-35500 Digital Multi-Meter, HD-35667 Cylinder Leak Down Detector, and HD-38515 Clutch Spring Compressor.

Brake hydraulics, compressed fork and clutch springs, pressurized shock reservoirs, and flywheel or bearing press operations require secure support and the specified service tools. The foreword also calls for consulting applicable Harley-Davidson Service Bulletins for interim engineering changes and supplementary information.

Examples of Wheel and Brake Inspection Limits

For cast or disc wheels, the inspection section specifies replacement when lateral rim runout exceeds 0.040 in. or radial rim runout exceeds 0.030 in. These limits accompany illustrated gauge setups for the two measurements.

The chassis specification table lists 0.20 in. as the minimum brake-disc thickness for both front and rear discs, alongside the brake inspection and service coverage.