Positioning:
Essential diagnostic and repair resource for owners and technicians of 1997-1998 Harley-Davidson Softail motorcycles, a period of transition and robust cruiser design.
Alternatives:
While some online forums offer advice, a dedicated official workshop manual provides the most accurate, detailed, and organized information for complex repairs and maintenance.
Features:
Detailed diagrams, specifications, and step-by-step procedures for all major motorcycle systems, ensuring accurate service and long-term reliability.
Engine:
Comprehensive coverage of Twin Cam 88 and Evolution V-Twin engines (specific to the 1997-1998 Softail lineup, primarily Evolution models preceding the Twin Cam introduction into all Softails)
Transmission:
5-speed constant mesh, including clutch, primary drive, and gearbox maintenance and repair.
Electrical System:
Ignition, lighting, charging system (stator, regulator, battery), starter, and accessory wiring diagrams.
Fuel System:
Carburetor (Keihin CV 40mm typical), fuel lines, fuel pump (if applicable), and tank service.
Brakes:
Front and rear hydraulic brake systems, including master cylinders, calipers, lines, and pads.
Suspension:
Front fork (telescopic, typically with air assist capability), rear shock absorbers, and swingarm.
Chassis And Frame:
Frame inspection, lubrication points, and general chassis component service.
Wheels And Tires:
Wheel bearing service, tire mounting and balancing, and rim specifications.
Bodywork And Trim:
Fender removal/installation, seat, fuel tank, and other body panel service.
Maintenance:
Routine servicing, oil changes, filter replacements, chain adjustment, brake fluid flush, and tune-ups.
Troubleshooting:
Diagnostic charts and common problem identification for engine, electrical, and mechanical systems.
Repair:
Detailed step-by-step instructions for component disassembly, repair, reassembly, and adjustment.
Engine Overhaul:
Piston replacement, valve adjustments, seal replacements, and internal engine component repair.
Electrical Diagnostics:
Wiring diagram interpretation, voltage testing, continuity checks, and component testing.
Depth:
Comprehensive, covering everything from basic adjustments to complete engine and transmission rebuilds. Suitable for professional mechanics and advanced DIY enthusiasts.
Engine Type:
Air-cooled, 45-degree V-twin, Evolution engine (primarily for 1997-1998 Softail models). Pre-Twin Cam era.
Displacement Variants:
Typically 80 cubic inches (1338cc) for most Softail models of this era (e.g., FLSTN, FLSTS, FXSTS, FLSTF, FLSTC).
Horsepower:
Approximately 60-65 HP (est.) at 5000 RPM (exact figures vary by specific model and tuning).
Torque:
Approximately 70-75 lb-ft at 3200 RPM (est.)
Carburetor:
Keihin CV 40mm Constant Velocity Carburetor is standard on most models.
Ignition System:
Electronic Ignition with single fire or dual fire coil configurations.
Oil System:
Dry sump lubrication system with oil tank separate from the crankcase.
Valve Train:
Overhead valve (OHV), pushrod actuated.
Type:
5-speed, constant mesh, sequential manual gearbox.
Optional Types:
None typically for this era Softail, 5-speed was standard.
Clutch:
Wet, multi-plate, diaphragm spring clutch.
Primary Drive:
Duplex chain drive within a primary chaincase.
Transmission Fluid Type:
Harley-Davidson Formula+ (or equivalent API GL-4, SAE 80W-90 gear oil compatible with wet clutches).
Primary Chain Lubricant:
Harley-Davidson Formula+ (or equivalent primary lubricant).
Wheelbase:
Varies by specific Softail model (e.g., FLSTC approx. 64.5 inches, FXSTS approx. 66.5 inches).
Seat Height:
Varies by model (e.g., FLSTC approx. 26.5 inches, FXSTS approx. 27.5 inches).
Dry Weight:
Varies by model (e.g., FLSTC approx. 650-670 lbs, FXSTS approx. 620-640 lbs).
Gross Vehicle Weight Rating:
Typically around 1000-1100 lbs.
Fuel Tank Capacity:
Typically 4.0 US gallons (approx. 15.1 liters).
Safety Ratings:
N/A (Motorcycles are not rated by traditional automotive crash test agencies like NHTSA or IIHS).
Active Safety:
Integral braking system (linked front/rear on some models), responsive throttle control.
Passive Safety:
Robust frame construction, rider ergonomics designed for control.
Infotainment Systems:
Limited to basic analogue instrumentation (speedometer, tachometer, fuel gauge, oil pressure light). No integrated infotainment systems or connectivity features in the modern sense.
Assistance Features:
N/A (No electronic driver assistance systems like ABS or traction control typically found on this generation of Softails).
Lighting System:
Halogen headlamp, incandescent tail and turn signals. Manual covers bulb replacement and wiring.
First Service:
Typically at 1,000 miles (1600 km) for initial break-in service, including oil change, primary chain adjustment, and inspection.
Subsequent Service:
Generally every 5,000 miles (8,000 km) or annually for routine maintenance (oil, filter, checkups). Refer to manual for specific intervals for spark plugs, brake fluid, etc.
Engine Oil Type:
Harley-Davidson 20W50 Motorcycle Oil (or equivalent V-twin specific motorcycle oil meeting Harley-Davidson specifications).
Brake Fluid Type:
DOT 4 hydraulic brake fluid (check manual for confirmation, often specified by Harley-Davidson).
Engine Oil Capacity:
Approximately 3.5 US quarts (3.3 liters) with filter change.
Primary Chain Case Capacity:
Approximately 1 US quart (0.95 liters).
Transmission Capacity:
Approximately 0.8 US quarts (0.75 liters).
Common Problems:
Potential issues include cam bearing wear, oil leaks (especially from crankcase seals), carburetor adjustment drift, and electrical connector corrosion. Some models may experience primary chain tensioner wear. Regular maintenance as per the manual is crucial.
Oil Filter:
Commonly Harley-Davidson Part Number 63796-77A or equivalent aftermarket filters.
Spark Plug Type:
Typically Champion or NGK plugs, specific part numbers will be detailed in the manual (e.g., H-D equivalent to Champion RA8HC or NGK DCPR7E).
Heritage:
Harley-Davidson, founded in 1903, is an iconic American motorcycle manufacturer renowned for its V-twin engines and cruiser styling.
Softail Lineage:
The Softail platform, introduced in the early 1980s, is characterized by its hidden rear shock absorbers, designed to mimic the appearance of a hardtail frame while providing rider comfort. The 1997-1998 models represent the mature Evolution engine era before the widespread adoption of the Twin Cam engine across all Softail lines.
Manufacturing Era:
These models were manufactured during a period of strong sales for Harley-Davidson, reflecting the popularity of the cruiser segment.
Brand Awards:
Harley-Davidson motorcycles are consistently recognized for their iconic styling, sound, and ownership experience, often considered lifestyle products.
Model Recognition:
The Softail line is a cornerstone of Harley-Davidson's lineup, celebrated for its classic cruiser aesthetics. Specific accolades for the '97-'98 models are tied to their enduring design and evolutionary improvements in the Evolution engine.
