1988 Heritage Softail Manual

The 1988 Heritage Softail is a classic Harley-Davidson motorcycle featuring the iconic Softail suspension system, Evolution V-twin engine, retro styling with full fenders, leather saddlebags, and nostalgic design elements. This manual covers essential information for owners including maintenance procedures, specifications, troubleshooting, and operational guidelines for this timeless American cruiser.

1. Features at a Glance 2. Installation & Assembly 3. First-Time Setup 4. Specifications 5. Controls and Instrumentation 6. Maintenance Procedures 7. Engine Operation 8. Safety Features 10. Care & Cleaning 11. Regulatory Information 12. Troubleshooting

Features at a Glance

Key components: Evolution 1340cc V-twin engine, Softail suspension system, 5-speed transmission, belt final drive, dual disc front brakes, leather saddlebags, wide handlebars, and classic cruiser styling.

Feature	Description
Engine	1340cc Evolution V-twin, 4-stroke
Suspension	Softail rear suspension with hidden shocks
Transmission	5-speed constant mesh
Final Drive	Belt drive system
Brakes	Dual disc front, single disc rear
Fuel Capacity	4.2 gallons
Seat Height	27.5 inches
Weight	630 lbs (dry)
Color Options	Black, two-tone schemes
Instrumentation	Speedometer, odometer, indicator lights

Installation & Assembly

Unpack and inspect all components. Ensure proper assembly before operation.

Handlebar installation: Align and secure handlebars to triple clamp
Front wheel assembly: Install wheel with proper axle alignment
Battery connection: Connect positive then negative terminals
Fluid checks: Verify oil, brake fluid, and coolant levels
Final inspection: Check all fasteners and connections

WARNING! Motorcycle is heavy; use proper lifting techniques. Ensure all fasteners are torqued to specification.

First-Time Setup

Complete initial setup before first ride.

Fuel system: Add premium unleaded gasoline
Battery: Charge fully before first use
Tire pressure: Set to recommended PSI (front: 30, rear: 36)
Controls: Verify proper operation of all controls
Test ride: Perform low-speed test in safe area

CAUTION! Always wear proper protective gear. Complete break-in period as specified.

Specifications

Engine Type: 4-stroke, 45° V-Twin
Displacement: 1340cc (81.8 cu in)
Bore x Stroke: 3.498" x 4.250"
Compression Ratio: 8.5:1
Fuel System: CV carburetor
Ignition: Electronic
Transmission: 5-speed constant mesh
Final Drive: Belt, ⅝" x 1½"
Frame: Steel, tubular
Wheelbase: 64.0 inches
Seat Height: 27.5 inches
Fuel Capacity: 4.2 gallons

Controls and Instrumentation

Handlebar controls: Right side - engine stop switch, start button, throttle. Left side - clutch lever, turn signals, horn, headlight dimmer.

Instrument Cluster: Speedometer, odometer, trip meter, neutral indicator, high beam indicator, turn signal indicators, oil pressure light.

Operation: Ignition switch (OFF/ON), fuel petcock (ON/RES), choke control, throttle friction adjustment. Regular maintenance includes control cable lubrication and switch inspection.

Maintenance Procedures

Regular maintenance ensures optimal performance and longevity.

Oil change: Every 2,500 miles or 6 months
Chain adjustment: Check every 500 miles
Brake inspection: Monthly or before long trips
Tire inspection: Check pressure weekly
Battery maintenance: Check terminals monthly
Air filter: Clean every 5,000 miles

Tip: Keep detailed maintenance records for warranty and resale value.

Engine Operation

Evolution 1340cc V-twin engine operation guidelines.

Starting procedure: Turn fuel ON, set choke, ignition ON, pull clutch, press starter
Warm-up: Allow 1-2 minutes warm-up before riding
Break-in period: Vary speeds, avoid full throttle for first 500 miles
Shifting: Use clutch for all shifts, match engine RPM
Cruising: Maintain steady RPM for best fuel economy
Shutdown: Let engine idle briefly before turning off

WARNING! Never operate engine in enclosed space. Carbon monoxide poisoning hazard.

Safety Features

Standard safety equipment: Dual front disc brakes, rear disc brake, turn signals, brake light, headlight, reflectors. Recommended additional safety gear: DOT-approved helmet, eye protection, gloves, protective clothing, sturdy footwear.

Care & Cleaning

Use mild soap and water for general cleaning. Chrome parts: Use chrome polish. Leather: Condition regularly. Avoid high-pressure sprays near bearings and electrical components.

CAUTION! Do not use harsh chemicals on paint or chrome. Avoid getting water in air cleaner or electrical connections.

Regulatory Information

EPA and CARB certified for road use. Meets DOT safety standards. Harley-Davidson Motor Company, Inc. Copyright © 1988. VIN location: steering head. For technical support, contact authorized Harley-Davidson dealer. Keep this manual with motorcycle for reference.

Troubleshooting

Symptom	Possible Cause	Corrective Action
Engine won't start	Fuel, spark, battery	Check fuel supply, spark plugs, battery charge
Poor performance	Air filter, carburetion	Clean air filter, check carburetor settings
Electrical issues	Battery, connections	Test battery, check all electrical connections
Brake problems	Fluid, pads, adjustment	Check brake fluid, pad wear, adjust cables
Unusual noises	Loose components	Inspect for loose fasteners, check chain tension

Service: Contact authorized Harley-Davidson dealer for major repairs. Keep maintenance records for warranty service.