Market Segment:
Cruiser/Performance Motorcycle (Sportster line)
Competitors 1988:
Yamaha Virago, Honda Shadow, Kawasaki Vulcan, Suzuki Intruder
Sportster Identity:
Iconic American V-twin cruiser known for its distinctive styling, approachable performance, and customization potential.
Systems Covered:
Engine, Transmission, Drivetrain, Chassis, Electrical System, Fuel System, Ignition System, Braking System, Suspension, Wheels & Tires, Bodywork, Lubrication, Troubleshooting, Maintenance Schedules
Page Count:
Detailed (Exact page count not specified, but indicated as 'Full Service Repair Manual' implying comprehensive coverage)
Manual Type:
Full Service Repair Manual
Format:
Likely Print (Product description implies a physical manual for sales)
Engine Systems:
Engine assembly, disassembly, tuning, valve adjustments, carburetor overhaul, oil pump, primary drive, ignition timing
Transmission Drivetrain:
Gearbox disassembly, assembly, clutch service, chain drive adjustment and replacement, belt drive inspection (if applicable to XLH variants)
Electrical System:
Wiring diagrams, lighting, ignition system components, starter motor, battery, charging system, troubleshooting electrical faults
Chassis Suspension Brakes:
Fork service, rear shock absorber replacement, brake system overhaul (calipers, master cylinders, lines), wheel bearing service, steering head bearing adjustment
Maintenance Procedures:
Oil changes, filter replacements, spark plug servicing, chain lubrication and adjustment, brake fluid replacement, battery checks, tire pressure checks
Repair Procedures:
Complete engine rebuild, transmission repair, carburetor reconditioning, electrical component replacement, brake system repairs, suspension overhaul
Troubleshooting:
Diagnosis of common performance issues, starting problems, electrical faults, braking irregularities, driveability issues
Depth Of Coverage:
Comprehensive, from basic routine maintenance to complete engine and transmission overhauls, including detailed diagnostic procedures and specifications
File Format Details:
Assuming print format; if digital, typically PDF with searchable text and high-resolution images/diagrams
Print Quality:
High-quality paper, clear diagrams, legible text (typical for reputable service manuals)
Binding Type:
Perfect bound or spiral bound for durability and ease of use in a workshop environment
Paper Type:
Durable, perhaps glossy or semi-gloss paper to withstand workshop conditions
Engine Type:
Air-cooled, 45-degree V-twin, Evolution Engine
Displacement:
883cc (53.7 cu in) and 1200cc (73.7 cu in) variants likely covered, with 1988 commonly featuring 883cc as standard and 1200cc as an option (XLH variants may have 1200cc).
Bore X Stroke 883:
76.2 mm x 96.8 mm (3.00 in x 3.81 in)
Bore X Stroke 1200:
88.8 mm x 96.8 mm (3.49 in x 3.81 in)
Compression Ratio 883:
Approximately 8.0:1
Compression Ratio 1200:
Approximately 8.5:1
Horsepower 883:
Approximately 48-50 hp (at crank)
Torque 883:
Approximately 48-50 ft-lbs (at crank)
Horsepower 1200:
Approximately 60-65 hp (at crank)
Torque 1200:
Approximately 65-70 ft-lbs (at crank)
Carburetor:
Keihin Butterfly Carburetor, typically 34mm for 883cc, potentially larger for 1200cc models.
Fuel Type:
Unleaded gasoline, minimum 87 octane (AKI)
Fuel Tank Capacity:
Approximately 3.1 US gallons (11.7 liters)
Transmission Type:
5-speed constant mesh
Optional Transmissions:
N/A for this model year
Primary Drive:
Duplex chain, 34T/57T (968-0015)
Final Drive:
Belt drive, 32T/65T (967-0003)
Clutch Type:
Wet, multi-plate
Transmission Fluid Type:
Harley-Davidson Formula + Transmission Oil (or equivalent API GL-4, SAE 80W-90)
Transmission Fluid Capacity:
Approximately 20 US fl oz (600 ml)
Length:
Approximately 88.1 inches (2238 mm)
Width:
Approximately 32.5 inches (825 mm)
Height:
Approximately 46.7 inches (1186 mm)
Dry Weight:
Approximately 475 lbs (215 kg)
Gross Vehicle Weight Rating:
Approximately 850 lbs (386 kg)
Wheelbase:
Approximately 59.6 inches (1514 mm)
Front Tire Size:
3.00-19 or 100/90-19
Rear Tire Size:
130/90-16
Wheel Type:
Spoked wheels, typically 19-inch front, 16-inch rear
Wheel Bolt Pattern:
N/A (Hub-mounted wheels)
Safety Ratings:
Motorcycles are not typically rated by agencies like NHTSA or IIHS in the same way as cars. Focus is on rider protection and vehicle stability.
Braking System:
Hydraulic disc brakes front and rear. Front: Single disc with 2-piston caliper. Rear: Single disc with 2-piston caliper.
Suspension Stability:
Telescopic front fork, adjustable rear shock absorbers for ride stability and control.
Lighting:
Halogen headlight, tail light, brake light, turn signals.
Frame Construction:
Steel frame for structural integrity.
Infotainment System:
Basic instrumentation. No advanced infotainment systems typical of modern motorcycles. Typically features analog speedometer, tachometer (optional), odometer, and indicator lights.
Driver Assistance Features:
None. Focus is on rider input and mechanical feedback.
Connectivity Options:
None. Analog systems.
Initial Service:
Break-in service usually recommended around 500-1000 miles (800-1600 km), involving oil change, filter replacement, and chain adjustment.
Regular Oil Change:
Every 2,500-5,000 miles (4,000-8,000 km) or annually, depending on usage and manufacturer recommendation.
Spark Plug Replacement:
Every 10,000-15,000 miles (16,000-24,000 km), or as needed based on inspection.
Chain Adjustment:
Check and adjust every 1,000-2,000 miles (1600-3200 km).
Brake Fluid Flush:
Every 2 years, regardless of mileage.
Engine Oil Type:
Harley-Davidson 20W-50 Motorcycle Oil (or equivalent API SG or higher, JASO MA certified)
Engine Oil Capacity:
Approximately 3 US quarts (2.8 liters) for 883cc, 3.5 US quarts (3.3 liters) for 1200cc (with filter change).
Brake Fluid Type:
DOT 4 hydraulic brake fluid
Evolution Engine Quirks:
Potential for oil leaks from crankcase seals, valve guides. Carburetor tuning sensitivity. Shifting can be clunky if not maintained. Primary chain adjustment is critical.
Electrical Common Problems:
Corroded wiring connections, failing starter solenoids, weak charging systems (regulator/stator) can be issues on older models.
Harley Davidson Legacy:
Harley-Davidson, founded in 1903, is one of the oldest motorcycle manufacturers, renowned for its V-twin engines and iconic cruiser styling.
Sportster Lineage:
The Sportster line, introduced in 1957, has been a staple of the Harley-Davidson lineup, evolving from its 'K-model' roots. The 1988 model year saw the introduction of the Evolution engine across the Sportster range.
Manufacturing Location:
United States (Milwaukee, Wisconsin)
Production Period:
The Evolution engine was introduced in 1986 for the Sportster line, with 1988 marking a significant year for its adoption and refinement.
