The 1988 Harley Davidson Softail is a classic American motorcycle featuring the iconic Softail frame design that mimics the hardtail look while providing modern suspension comfort. This manual covers the FXST Softail models including the FXST Softail, FXSTC Softail Custom, and FXSTSB Softail Springer. Below are key sections for maintenance, specifications, troubleshooting, and service procedures.
The 1988 Harley Davidson Softail series features the revolutionary Softail frame that provides the classic hardtail appearance with hidden rear suspension. Key models include FXST Softail, FXSTC Softail Custom, and FXSTSB Softail Springer.
| Model | Description |
|---|---|
| FXST Softail | Standard Softail model with classic styling |
| FXSTC Softail Custom | Custom version with extended fork and special trim |
| FXSTSB Softail Springer | Features springer front end for vintage look |
| Engine | 1340cc Evolution V-Twin |
| Transmission | 4-speed constant mesh |
| Frame | Softail design with hidden rear shocks |
| Front Suspension | Telescopic fork (Springer on FXSTSB) |
| Rear Suspension | Hidden horizontal shock absorbers |
| Brakes | Single disc front and rear |
| Fuel Capacity | 4.2 gallons |
The Evolution 1340cc V-Twin engine features improved reliability and performance over previous designs.
WARNING! Always allow engine to cool before performing maintenance. Use proper safety equipment.
Regular maintenance is essential for optimal performance and longevity.
CAUTION! Use only Harley Davidson recommended fluids and parts.
12-volt DC system with electronic ignition and charging system.
| Component | Specification |
|---|---|
| Battery | 12V 19AH sealed |
| Alternator | 32 amp three-phase |
| Starter | 1.4 kW gear reduction |
| Spark Plugs | Champion RA8HC gapped at 0.040" |
| Fuses | Main 30A, Accessory 15A |
Tip: Always disconnect battery before electrical work to prevent shorts.
Keihin 40mm constant velocity carburetor with manual choke.
WARNING! Gasoline is highly flammable. Work in well-ventilated area away from ignition sources.
4-speed constant mesh transmission with foot shift and hand clutch.
Hydraulic disc brakes front and rear with single piston calipers.
CAUTION! Brake fluid damages paint. Clean spills immediately.
Unique Softail suspension system with hidden rear shocks.
| Component | Specification |
|---|---|
| Front Fork | 39mm telescopic (except Springer) |
| Rear Shocks | Hidden horizontal, preload adjustable |
| Front Travel | 5.1 inches |
| Rear Travel | 3.0 inches |
| Wheelbase | 64.0 inches |
Common issues and solutions for 1988 Softail models.
| Symptom | Possible Cause | Corrective Action |
|---|---|---|
| Hard starting | Weak battery, fuel issues | Check battery voltage, clean carburetor |
| Poor idle | Dirty carburetor, vacuum leak | Clean carb, check intake seals |
| Electrical failure | Bad connections, regulator | Check grounds, test charging system |
| Oil leaks | Worn gaskets, loose bolts | Replace gaskets, check torque |
| Transmission noise | Low fluid, worn gears | Check fluid level, inspect gears |
Critical fastener torque values for proper assembly.
Complete electrical schematics for all Softail models. Includes color-coded wiring for main harness, ignition system, lighting, and accessories. Diagrams show proper routing and connection points for all electrical components.
Service Support: For technical assistance contact Harley Davidson dealer or visit official service website.