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Harley-Davidson 2008 Sportster - User Manual

Harley-Davidson 2008 Sportster
37 pages
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2008 Sportster Models Service
Manual
©2007 H-D.
ALL RIGHTS RESERVED
99484-08
Printed in the U.S.A.
VISIT THE HARLEY-DAVIDSON WEB SITE
http://www.harley-davidson.com
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Summary

About This Manual

General Information

Purpose and scope of the service manual for motorcycle users and technicians.

How to Use Your Service Manual

Guidance on navigating the manual's structure, including table of contents and index.

Preparation for Service

Safety and preparation guidelines for performing maintenance and repairs.

Important Notes

General notes on service procedures, part quantities, and security system disarming.

Service Bulletins

Information on periodic service bulletins issued by Harley-Davidson Motor Company.

Genuine Replacement Parts

Emphasis on using genuine Harley-Davidson parts for satisfactory and lasting repairs.

Warnings and Cautions

Explanation of safety alert symbols (WARNING, CAUTION) and their significance.

Maintenance

General Maintenance Practices

General service, safety, and shop practices for motorcycle maintenance.

Fuel and Oil

Specifications and recommendations for fuel types, gasoline blends, and engine lubrication.

Maintenance Schedule

Periodic maintenance requirements for 2008 Sportster models, detailing tasks and intervals.

Bulb Requirements

Chart detailing the required bulbs, their specifications, and Harley-Davidson part numbers.

Engine Oil and Filter Service

Procedures for checking, adding, changing engine oil, and replacing the oil filter.

Brakes

General information, inspection procedures, and troubleshooting for the hydraulic brake system.

Bleeding Hydraulic Brake System

Step-by-step procedures for bleeding air from the front and rear hydraulic brake systems.

Tires and Wheels

Information and guidelines for tire selection, inspection, pressure, and wheel compatibility.

Primary Chain

Inspection and adjustment procedures for the primary chain.

Clutch

Clutch adjustment procedures to ensure proper operation.

Transmission Lubricant

Information on transmission lubricant type, level checks, and changing procedures.

Rear Belt and Sprockets

Inspection and adjustment procedures for the rear drive belt and sprockets.

Shock Absorber Adjustment

Procedure for adjusting shock absorber preload for optimal ride.

Rear Belt Deflection

Inspection and adjustment procedure for rear belt deflection.

Brake Pads and Discs

Inspection procedures for brake pads and discs, including wear limits.

Battery Maintenance

Procedures for battery maintenance, including charging and connection.

Spark Plugs

Inspection and maintenance procedures for spark plugs.

Steering Head Bearings

Adjustment and lubrication procedures for steering head bearings.

Rear Fork Bearings

Information and replacement intervals for rear fork bearings.

Front Fork Oil

Procedures for changing front fork oil, including type and amount.

Cable and Chassis Lubrication

Lubrication procedures for various cables, levers, and chassis components.

Air Cleaner and Exhaust System

Service procedures for the air cleaner and exhaust system, including cleaning and inspection.

Throttle Control

Inspection, lubrication, and adjustment procedures for throttle cables.

Idle Speed and Ignition Timing

Procedures for adjusting idle speed and checking ignition timing.

Fuel Supply Filter

Service procedures for the fuel supply filter, including removal and installation.

Engine Mounts and Stabilizer Links

Inspection procedures for engine mounts and stabilizer links.

Headlamp Alignment

Procedures for aligning the headlamp for proper visibility.

Fluid and Lubricant Requirements

Specifications for all required fluids and lubricants used in the motorcycle.

Critical Fasteners

Identification and importance of critical fasteners in motorcycle assembly and maintenance.

Storage Procedures

Guidelines for properly storing the motorcycle.

Troubleshooting

Guide to diagnosing and resolving common maintenance and operation issues.

Chassis

Chassis Specifications

Technical specifications related to the motorcycle's chassis components.

Vehicle Identification Number (V.I.N.)

Information on locating and understanding the Vehicle Identification Number.

Wheels

Procedures for wheel removal, disassembly, assembly, and installation.

Wheel Lacing: 16 Inch Rim

Step-by-step procedure for lacing a 16-inch motorcycle rim.

Wheel Lacing: 19 Inch Rim

Step-by-step procedure for lacing a 19-inch motorcycle rim.

Wheel Lacing: 21 Inch Rim

Step-by-step procedure for lacing a 21-inch motorcycle rim.

Truing Laced Wheels

Procedures for truing both lateral and radial aspects of laced wheels.

Checking Cast Wheel Runout

Methods for checking lateral and radial runout on cast wheels.

Front Brake Master Cylinder

Service procedures for the front brake master cylinder assembly.

Front Brake Caliper

Service procedures for the front brake caliper, including removal and assembly.

Rear Brake Master Cylinder

Service procedures for the rear brake master cylinder assembly.

Rear Brake Master Cylinder Reservoir

Service procedures for the rear brake master cylinder reservoir.

Rear Brake Caliper

Service procedures for the rear brake caliper, including disassembly and assembly.

Brake Lines

Procedures for removing and installing front and rear brake lines.

Tires

Tire removal, installation, cleaning, inspection, and balancing procedures.

Left Side Cover

Procedures for opening and closing the left side cover.

Front Fork

Service procedures for the front fork, including removal, disassembly, and assembly.

Fork Stem and Bracket Assembly

Procedures for the removal, disassembly, and assembly of the fork stem and bracket.

Belt Guard and Debris Deflector

Procedures for removing and installing the belt guard and debris deflector.

Rear Fork

Service procedures for the rear fork, including removal, disassembly, and assembly.

Shock Absorbers

Service procedures for shock absorbers, including removal and installation.

Stabilizer Links

Procedures for servicing stabilizer links, including removal and installation.

Front Engine Mount;Isolator

Procedures for removing and installing the front engine mount/isolator.

Rear Engine Mount;Isolator

Procedures for removing and installing the rear engine mount/isolator.

Throttle Cables

Procedures for throttle cable removal, disassembly, and installation.

Clutch Control

Procedures for clutch control removal, disassembly, and installation.

Handlebars

Procedures for handlebar removal, disassembly, and installation for various models.

Front Fender

Procedures for removing and installing the front fender.

Rear Fender: All Models Except XL 1200 N

Procedures for rear fender removal and installation for specific models.

Rear Fender and License Plate Bracket: XL 1200 N

Procedures for rear fender and license plate bracket service on XL 1200N.

Jiffy Stand

Procedures for jiffy stand removal, installation, and lubrication.

Seat

Procedures for seat removal and installation.

Rider Foot Controls: All Models Equipped with Mid-Mount Controls

Service procedures for rider foot controls on models with mid-mounts.

Engine

Engine Specifications

Technical specifications for the 2008 Sportster engine.

Engine Overview

General information and overview of the engine system.

Oil Pressure

Information on engine oil pressure, indicator lamp, and checking procedures.

Crankcase Breathing System

General information regarding the crankcase breathing system.

Engine Troubleshooting

Guide to diagnosing and resolving common engine performance issues.

Engine Lubrication System

Detailed information on the engine lubrication system, including the oil pump.

How to Use This Section

Guidance on how to navigate and utilize the engine section of the manual.

Top End Service

Procedures for servicing the top end of the engine, both in and out of the chassis.

Bottom End Service

Procedures for servicing the bottom end of the engine, both in and out of the chassis.

Removing Engine from Chassis

Step-by-step procedure for removing the engine from the motorcycle chassis.

Installing Engine in Chassis

Step-by-step procedure for installing the engine into the motorcycle chassis.

Top End Overhaul: Disassembly

Detailed procedures for disassembling the top end components of the engine.

Top End Overhaul: Assembly

Detailed procedures for assembling the top end components of the engine.

Bottom End Overhaul: Disassembly

Detailed procedures for disassembling the bottom end components of the engine.

Bottom End Overhaul: Assembly

Detailed procedures for assembling the bottom end components of the engine.

Valve Tappets

Procedures for valve tappet removal, cleaning, inspection, and installation.

Gearcase Cover and Cam Gears

Service procedures for the gearcase cover and cam gears.

Cylinder Head

Procedures for cylinder head removal, disassembly, cleaning, and installation.

Cylinder and Piston

Procedures for cylinder and piston removal, inspection, and installation.

Crankcase

Procedures for crankcase removal, disassembly, and assembly.

Oil Pump

Procedures for oil pump removal, disassembly, cleaning, assembly, and installation.

Oil Filter Mount

Procedures for oil filter mount removal, disassembly, and installation.

Oil Tank

Procedures for oil tank removal and installation.

Fuel System

Fuel System Specifications

Technical specifications for the 2008 Sportster fuel system.

Electronic Fuel Injection (EFI) Troubleshooting

Troubleshooting guide for the Electronic Fuel Injection system.

Air Cleaner

Procedures for air cleaner removal, cleaning, inspection, and installation.

Fuel Tank

Procedures for fuel tank removal, cleaning, inspection, and installation.

Throttle Position Sensor (TPS)

Service procedures for the throttle position sensor.

Engine Temperature Sensor (ET)

Service procedures for the engine temperature sensor.

Induction Module

Service procedures for the induction module, including disassembly and assembly.

Idle Air Control (IAC)

Service procedures for the idle air control system.

Temperature Manifold Absolute Pressure Sensor (TMAP)

Service procedures for the temperature manifold absolute pressure sensor.

Oxygen Sensor

Service procedures for the oxygen sensor.

Exhaust System

Procedures for exhaust system removal, installation, and inspection.

Fuel Injectors

Service procedures for fuel injectors, including removal and installation.

Fuel Pump

Service procedures for the fuel pump, including removal, disassembly, and installation.

Fuel Pressure Test

Procedure for testing fuel pressure to diagnose system issues.

Intake Leak Test

Procedure for testing the intake system for leaks.

Evaporative Emissions Control (CA Models)

Information on evaporative emissions control systems for California models.

Starter

Starter Specifications

Technical specifications for the 2008 Sportster starter system.

Starter Service

Procedures for starter removal, installation, and testing.

Starter Solenoid

Service procedures for the starter solenoid, including disassembly and assembly.

Drive;Transmission

Drive Specifications

Technical specifications related to the drive and transmission systems.

Primary Chain Adjuster

Procedure for adjusting the primary chain tension.

Clutch Release Mechanism

Service procedures for the clutch release mechanism.

Primary Drive and Clutch

Service procedures for the primary drive system and clutch assembly.

Secondary Drive Belt

Procedures for installing and removing the secondary drive belt.

Transmission

General information and overview of the transmission system.

Case Disassembly for Transmission Removal

Procedures for disassembling the engine case for transmission removal.

Transmission Removal and Disassembly

Detailed procedures for removing and disassembling the transmission.

Transmission Assembly

Detailed procedures for assembling the transmission.

Main Drive Gear and Bearing

Service procedures for the main drive gear and its bearing.

Transmission Right Case Bearings

Service procedures for bearings located in the transmission right case.

Transmission Left Case Bearings

Service procedures for bearings located in the transmission left case.

Transmission Installation

Procedures for installing the transmission into the engine.

Transmission Sprocket

Procedures for transmission sprocket removal and installation.

Electrical

Electrical Specifications

Technical specifications for the motorcycle's electrical system.

Voltage Regulator

Service procedures for the voltage regulator.

Fuses and Relays

Procedures for replacing fuses and relays in the electrical system.

Maxi-Fuse Holder

Procedures for replacing the maxi-fuse holder.

Speedometer: All Single Gauge Models Except XL 883 C;XL 1200 C

Service procedures for single gauge speedometer systems.

Speedometer and Tachometer: All Dual Gauge Models

Service procedures for dual gauge speedometer and tachometer systems.

Speedometer: XL 883 C;XL 1200 C

Service procedures for speedometer systems on XL 883C and XL 1200C models.

Turn Signal and Security Module (TSM;TSSM;HFSM)

Service procedures for the turn signal and security module.

Battery Cables

Procedures for battery cable removal and installation.

Battery Tray

Procedures for battery tray removal and installation.

Ignition System

General information and troubleshooting for the ignition system.

Ignition and Light Switch

Service procedures for the ignition and light switch.

Electronic Control Module (ECM)

Service procedures for the Electronic Control Module.

Spark Plug Cables

Service procedures for spark plug cables.

Ignition Coil

Service procedures for the ignition coil, including troubleshooting.

Charging System

Service procedures for the charging system, including alternator and regulator.

Headlamp

Procedures for replacing headlamp bulbs on various models.

Indicator Lamp Module

Service procedures for indicator lamp modules.

Tail Lamp: All Models Except XL 1200 N

Procedures for tail lamp bulb and base replacement.

Turn Signals

Procedures for turn signal bulb and housing replacement.

License Plate Lamp Module: XL 1200 N

Service procedures for the license plate lamp module on XL 1200N.

Rear Lighting Converter Module: XL 1200 N (Domestic Only)

Service procedures for the rear lighting converter module on XL 1200N.

Rear Stop Lamp Switch

Procedure for replacing the rear stop lamp switch.

Crank Position Sensor (CKP)

Service procedures for the crank position sensor.

Alternator

Procedures for alternator removal, disassembly, and assembly.

Vehicle Speed Sensor (VSS)

Service procedures for the vehicle speed sensor.

Neutral Switch

Procedure for replacing the neutral switch.

Main Wiring Harness

Procedures for removing and installing the main wiring harness.

Electrical Caddies

Service procedures for electrical caddies and their components.

Jiffy Stand Switch: International Models

Service procedures for the jiffy stand switch on international models.

Optional Security Siren

Procedures for optional security siren removal, disassembly, and battery replacement.

Oil Pressure Switch

Service procedures for the oil pressure switch.

Horn

Troubleshooting and replacement procedures for the horn.

Maxi-Fuse

Procedures for maxi-fuse removal and installation.

Handlebar Switch Assemblies

General information and procedures for handlebar switch assemblies.

Right Handlebar Switches

Service procedures for the right handlebar switch components.

Left Handlebar Switches

Service procedures for the left handlebar switch components.

Appendix A Connector Repair

AMP 1-Place Connectors

Procedures for repairing AMP 1-place electrical connectors.

AMP Multilock Connectors

Procedures for repairing AMP multilock electrical connectors.

Autofuse Electrical Connectors

Procedures for repairing autofuse electrical connectors.

Delphi Connectors

Procedures for repairing Delphi electrical connectors.

Delphi Maxi Fuse Housing

Procedures for repairing the Delphi maxi fuse housing.

Deutsch Electrical Connectors

Procedures for repairing Deutsch electrical connectors.

Deutsch Standard Terminal Repair

Procedures for repairing Deutsch standard terminals.

Deutsch Solid Barrel Mini Terminal Repair

Procedures for repairing Deutsch solid barrel mini terminals.

Deutsch Mini Terminal Repair

Procedures for repairing Deutsch mini terminals.

Molex Connectors

Procedures for repairing Molex electrical connectors.

Packard 150 Metri-Pack Connectors

Procedures for repairing Packard 150 Metri-Pack connectors.

Packard 280 Metri-Pack Relay and Fuse Block Connectors

Procedures for repairing Packard 280 Metri-Pack connectors.

Packard 480 Metri-Pack Connectors

Procedures for repairing Packard 480 Metri-Pack connectors.

Packard 630 Metri-Pack Connectors

Procedures for repairing Packard 630 Metri-Pack connectors.

Packard Metri-Pack Terminals

Procedures for repairing Packard Metri-Pack terminals.

Packard ECM Connector

Procedures for repairing Packard ECM connectors.

Packard Micro-64 Connectors

Procedures for repairing Packard Micro-64 connectors.

Sealed Splice Connectors

Procedures for repairing sealed splice connectors.

Appendix B Wiring

Connectors

Information on connector locations, numbers, and repair instructions.

Wiring Diagrams

Information on wiring diagram symbols, color codes, and specific diagrams.

Appendix C Conversions

Metric Conversion

Conversion table for metric measurements.

Fluid Conversions

Conversion tables for various fluid measurements.

Torque Conversions

Conversion table for torque measurements.

Appendix D Compensating Sprocket

Compensating Sprocket Service

Procedures for compensating sprocket removal, installation, and bearing replacement.

Appendix E Glossary

Glossary of Terms

Glossary of acronyms, abbreviations, and definitions used in the manual.

Reference Material

Harley-Davidson 2008 Sportster Specifications

General IconGeneral
Engine TypeAir-cooled, Evolution
Fuel SystemElectronic Sequential Port Fuel Injection (ESPFI)
Transmission5-speed
Final DriveBelt
Front BrakesSingle disc
Rear BrakesSingle disc
Displacement883cc
Bore x Stroke76.2 mm x 96.8 mm
Compression Ratio8.9:1
Front Suspension39 mm
Front TireMH90-21
Rear Tire150/80B16
Wheelbase60 in. (1525 mm)
Seat Height668 mm
Fuel Capacity12.5 L

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