2008 Harley-Davidson Dyna FXD Models Service Manual SET Wide Glide Screamin Eagle Dyna Low Rider Super Glide Street Bob

2008 Dyna SERVICE MANUAL Part Number 99481-08 Chapter 1 Maintenance Chapter 2 Chassis Chapter 3 Engine Chapter 4 Fuel System Chapter 5 Starter Chapter 6 Drive Chapter 7 Transmission Chapter 8 Electrical ELECTRICAL DIAGNOSTICS Part Number 99496-08 Chapter 1 Starting / Charging Chapter 2 Instruments Chapter 3 TSM/HFSM Chapter 4 Engine Management

Harley-Davidson motorcycles conform to all applicable U.S.A. Federal Motor Vehicle Safety Standards and U.S.A. Environmental Protection Agency regulations effective on the date of manufacture. To maintain the safety, dependability, and emission and noise control performance, it is essential that the procedures, specifications and service instructions in this manual are followed. Any substitution, alteration or adjustment of emission system and noise control components outside of factory specifications may be prohibited by law. IMPORTANT NOTICE Harley-Davidson Motor Company

Blank Text Here READER COMMENTS Please comment on the completeness, accuracy, organization, usability, and readability of this manual. Please list the page, item, and part number(s) of any errors you find in this manual. Please tell us how we can improve this manual. Occupation: Name: Dealership: Street: Department: City: State: Zip: Please clip out and mail to: Service Communications Department Harley-Davidson Motor Company P.O. Box 653 Milwaukee, WI USA 53201 The Harley-Davidson Service Communications Department maintains a continuous effort to improve the quality and usefulness of its publications. To do this effectively, we need user feedback - your critical evaluation of this manual. 2008 Dyna Models Service Manual (99481-08)

ABOUT THIS MANUAL GENERAL This Service Manual has been prepared with two purposes in mind. First, it will acquaint the user with the construction of the Harley-Davidson product and assist in the performance of basic maintenance and repair. Secondly, it will introduce to the pro- fessional Harley-Davidson Technician the latest field-tested and factory-approved major repair methods. We sincerely believe that this Service Manual will make your association with Harley-Davidson products more pleasant and profitable. HOW TO USE YOUR SERVICE MANUAL Refer to the table below for the content layout of this manual. CHAPTER NO. Maintenance 1 Chassis 2 Engine 3 Fuel System 4 Starter 5 Drive 6 Transmission 7 Electrical 8 Appendix A Connector Repair A Appendix B Wiring B Appendix C Conversions C Appendix D Glossary D Use the TABLE OF CONTENTS (which follows this FORE- WORD) and the INDEX (at the back of this manual) to quickly locate subjects. Sections and topics in this manual are sequentially numbered for easy navigation. For example, a cross-reference shown as 2.1 SPECIFICA- TIONS refers to chapter 2 CHASSIS, heading 2.1 SPECIFIC- ATIONS. For quick and easy reference, all pages contain a section number followed by a page number. For example, page 3-5 refers to page 5 in section 3. A number of acronyms and abbreviations are used in this document. See the D .1 GLOSSAR Y for a list of acronyms, abbreviations and definitions. PREPARATION FOR SERVICE Stop the engine when refueling or servicing the fuel system. Do not smoke or allow open flame or sparks near gasoline. Gasoline is extremely flammable and highly explosive, which could result in death or serious injury. (00002a) Good preparation is very important for efficient service work. A clean work area at the start of each job will allow you to perform the repair as easily and quickly as possible, and will reduce the incidence of misplaced tools and parts. A motorcycle that is excessively dirty should be cleaned before work starts. Cleaning will occasionally uncover sources of trouble. Tools, instruments and any parts needed for the job should be gathered before work is started. Interrupting a job to locate tools or parts is a distraction and causes needless delay. NOTES • To avoid unnecessary disassembly, carefully read all rel- ative service information before repair work is started. • In figure legends, the number which follows the name of a part indicates the quantity necessary for one complete assembly. • When servicing a vehicle equipped with the Harley-Dav- idson Smart Security System (H-DSSS), you must first disarm the security system. Either keep the fob in close proximity to the vehicle, or use Digital Technician to disable the security system while the vehicle is being serviced and re-enable the system after service is completed. SERVICE BULLETINS In addition to the information presented in this Service Manual, Harley-Davidson Motor Company will periodically issue Service Bulletins to Harley-Davidson dealers. Service Bulletins cover interim engineering changes and supplementary information. Consult the Service Bulletins to keep your product knowledge current and complete. USE GENUINE REPLACEMENT PARTS Do not use aftermarket parts and custom made front forks which can adversely affect performance and handling. Removing or altering factory installed parts can adversely affect performance and could result in death or serious injury. (00001a) To ensure satisfactory and lasting repairs, carefully follow the Service Manual instructions and use only genuine Harley- Davidson replacement parts. Behind the emblem bearing the words GENUINE HARLEY-DAVIDSON stand more than 100 years of design, research, manufacturing, testing and inspecting experience.This is your assurance that the parts you are using will fit right, operate properly and last longer. WARNINGS AND CAUTIONS Statements in this service manual preceded by the following words are of special significance. WARNING indicates a potentially hazardous situation which, if not avoided, could result in death or serious injury. (00119a) CAUTION indicates a potentially hazardous situation which, if not avoided, may result in minor or moderate injury. (00139a) CAUTION used without the safety alert symbol indicates a potentially hazardous situation which, if not avoided, may result in property damage. (00140a) I FOREWORD

NOTE Refers to important information, and is placed in italic type. It is recommended that you take special notice of these items. Proper service and repair is important for the safe, reliable operation of all mechanical products. The service procedures recommended and described in this service manual are effective methods for performing service operations. Always wear proper eye protection when using hammers, arbor or hydraulic presses, gear pullers, spring com- pressors, slide hammers and similar tools. Flying parts could result in death or serious injury. (00496b) Some of these service operations require the use of tools specially designed for the purpose. These special tools should be used when and as recommended. It is important to note that some warnings against the use of specific service methods, which could damage the motorcycle or render it unsafe, are stated in this service manual. However, please remember that these warnings are not all-inclusive. Inadequate safety precautions could result in death or serious injury. Since Harley-Davidson could not possibly know, evaluate or advise the service trade of all possible ways in which service might be performed, or of the possible hazardous con- sequences of each method, we have not undertaken any such broad evaluation. Accordingly, anyone who uses a service procedure or tool which is not recommended by Harley-Dav- idson must first thoroughly satisfy himself that neither his nor the operator's safety will be jeopardized as a result. Failure to do so could result in death or serious injury. PRODUCT REFERENCES Read and follow warnings and directions on all products. Failure to follow warnings and directions can result in death or serious injury. (00470b) When reference is made in this manual to a specific brand name product, tool or instrument, an equivalent product, tool or instrument may be substituted. Kent-Moore Products All tools mentioned in this manual with an "HD", "J" or "B" preface must be ordered through SPX Kent-Moore. For ordering information or product returns, warranty or otherwise, visit www.spx.com. Loctite Sealing and Threadlocking Products Some procedures in this manual call for the use of Loctite products. If you have any questions regarding Loctite product usage or retailer/wholesaler locations, please contact Loctite Corp. at www.loctite.com. PRODUCT REGISTERED MARKS Allen, Amp Multilock, Bluetooth, Brembo, Delphi, Deutsch, Dunlop, Dynojet, Fluke, G.E. Versilube, Gunk, Hydroseal, Hylomar, Kevlar, Lexan, Loctite, Lubriplate, Keps, K&N, Mag- naflux, Marson Thread-Setter Tool Kit, MAXI fuse, Molex, MPZ, Mulitilock, Novus, Packard, Pirelli, Permatex, Philips, PJ1, Pozidriv, Robinair, S100, Sems, Snap-on, Teflon, Threadlocker, Torca, Torco, TORX, Tufoil, Tyco, Ultratorch, Velcro, X-Acto, and XM Satellite Radio are among the trademarks of their respective owners. H-D MICHIGAN, INC. TRADEMARK INFORMATION Harley, Harley-Davidson, H-D, Bar & Shield, Digital Tech, Digital Technician, Destroyer, Deuce, Dyna, Electra Glide, Evolution, Fat Boy, Glaze, Gloss, H-D, H-Dnet.com, HD, Harley, Heritage Softail, Heritage Springer, Low Rider, Night Rod, Night Train, Profile, Revolution, Road Glide, Road King, Rocker, Softail, Sportster, Sun Ray, Sunwash, Tech Link, Twin Cam 88, Twin Cam 88B, Twin Cam 96, Twin Cam 96B, Twin Cam 103, Twin Cam 103B, Twin Cam 110, Twin Cam 110B, Tour- Pak, Screamin' Eagle, Softail, Super Guide, Super Premium, SYN3, Ultra Glide, V-Rod, VRSC, V-Rod, VRSC, Wide Glide, and Harley-Davidson Genuine Motor Parts and Genuine Motor Accessories are among the trademarks of H-D Michigan, Inc. CONTENTS All photographs, illustrations and procedures may not neces- sarily depict the most current model or component, but are based on the latest production information available at the time of publication. Since product improvement is our continual goal, Harley-Dav- idson reserves the right to change specifications, equipment or designs at any time without notice and without incurring obligation. II FOREWORD

MAINTENANCE 1.1 GENERAL Servicing a New Motorcycle...............................................1-1 Safe Operating Maintenance..............................................1-1 Shop Practices...................................................................1-1 Repair Notes...............................................................1-1 Safety..........................................................................1-1 Removing Parts...........................................................1-1 Cleaning......................................................................1-1 Disassembly and Assembly........................................1-2 Checking Torques on Fasteners with Lock Patches.....1-2 Magnetic Parts Trays...................................................1-2 Repair and Replacement Procedures................................1-2 Hardware and Threaded Parts....................................1-2 Threadlocking Agents..................................................1-2 Wiring, Hoses and Lines.............................................1-2 Instruments and Gauges.............................................1-2 Bearings......................................................................1-2 Bushings.....................................................................1-2 Gaskets.......................................................................1-2 Lip Type Seals.............................................................1-2 O-Rings (Preformed Packings)....................................1-3 Gears..........................................................................1-3 Shafts..........................................................................1-3 Part Replacement........................................................1-3 Exhaust System Leakage............................................1-3 Cleaning.............................................................................1-3 Part Protection............................................................1-3 Cleaning Process........................................................1-3 Rust or Corrosion Removal.........................................1-3 Bearings......................................................................1-3 Tool Safety..........................................................................1-3 Air Tools.......................................................................1-3 Wrenches....................................................................1-3 Pliers/Cutters/Pry bars................................................1-3 Hammers.....................................................................1-4 Punches/Chisels..........................................................1-4 Screwdrivers................................................................1-4 Ratchets and Handles.................................................1-4 Sockets........................................................................1-4 Storage Units...............................................................1-4 1.2 MAINTENANCE SCHEDULE General...............................................................................1-5 1.3 FUEL AND OIL Fuel ....................................................................................1-8 Gasoline Blends.................................................................1-8 Engine Lubrication..............................................................1-8 Winter Lubrication..............................................................1-9 1.4 ENGINE OIL AND FILTER Checking and Adding Oil..................................................1-10 Type of Oil.................................................................1-10 Checking with Cold Engine.......................................1-10 Checking with Warm Engine.....................................1-10 Changing Oil and Filter.....................................................1-11 1.5 BULB REQUIREMENTS General.............................................................................1-12 1.6 BRAKES Fluid Inspection................................................................1-13 Rear Pedal Height............................................................1-13 1.7 AIR CLEANER AND EXHAUST SYSTEM Removal...........................................................................1-15 Installation........................................................................1-15 Exhaust System Leak Check............................................1-16 1.8 TIRES AND WHEELS Tires.................................................................................1-17 Tire Replacement.............................................................1-17 Wheel Bearings................................................................1-18 Wheel Spokes..................................................................1-18 1.9 PRIMARY CHAIN General.............................................................................1-19 Changing Primary Chaincase Lubricant...........................1-19 1.10 TRANSMISSION LUBRICANT Changing Transmission Lubricant.....................................1-21 1.11 CLUTCH Adjustment.......................................................................1-22 1.12 REAR BELT AND SPROCKETS General.............................................................................1-24 Cleaning...........................................................................1-24 Inspection.........................................................................1-24 Sprockets..................................................................1-24 Rear Belt...................................................................1-24 1.13 REAR BELT DEFLECTION Inspection.........................................................................1-26 Adjustment.......................................................................1-27 1.14 THROTTLE CABLES Cable Inspection, Lubrication and Adjustment.................1-28 Inspection and Lubrication........................................1-28 Adjustment................................................................1-28 1.15 BLEEDING BRAKES General.............................................................................1-29 Procedure.........................................................................1-29 1.16 BRAKE PADS AND DISCS Inspection.........................................................................1-30 Brake Pads................................................................1-30 Brake Disc Thickness................................................1-30 Brake Disc Lateral Runout and Warpage..................1-30 Brake Pad Replacement...................................................1-30 Rear Brake Caliper....................................................1-30 Front Brake Caliper...................................................1-31 1.17 BATTERY MAINTENANCE General.............................................................................1-33 Cleaning and Inspection...................................................1-34 Voltmeter Test...................................................................1-34 Voltmeter Test............................................................1-34 Charging Battery..............................................................1-34 Safety Precautions....................................................1-34 Using a Battery Charger............................................1-34 Disconnection and Removal.............................................1-35 Storage.............................................................................1-36 Installation and Connection..............................................1-36 1.18 SUSPENSION ADJUSTMENTS Rear Shock Preload Adjustment......................................1-38 III TABLE OF CONTENTS

1.19 SPARK PLUGS Inspection.........................................................................1-39 Spark Plug Cable Inspection............................................1-39 1.20 STEERING HEAD BEARINGS Adjustment.......................................................................1-41 Bearing Adjustment (Fall Away)................................1-41 Lubrication........................................................................1-41 1.21 FRONT FORK OIL Replacing Fork Oil............................................................1-42 1.22 CABLE AND CHASSIS LUBRICATION General.............................................................................1-43 Cables and Hand Levers..................................................1-43 Jiffy Stand.........................................................................1-43 1.23 HEADLAMP ALIGNMENT Inspection.........................................................................1-44 Adjustment.......................................................................1-44 All Models..................................................................1-44 1.24 CRITICAL FASTENERS Inspection.........................................................................1-46 1.25 ENGINE MOUNTS Inspection.........................................................................1-47 1.26 STORAGE General.............................................................................1-48 Placing in Storage............................................................1-48 Removal from Storage......................................................1-48 1.27 TROUBLESHOOTING General.............................................................................1-50 Engine..............................................................................1-50 Starter Motor Does Not Operate or Does Not Turn Engine Over...........................................................................1-50 Engine Turns Over But Does Not Start......................1-50 Starts Hard................................................................1-50 Starts But Runs Irregularly or Misses........................1-50 Spark Plug Fouls Repeatedly....................................1-50 Pre-Ignition or Detonation (Knocks or Pings)............1-50 Overheating...............................................................1-51 Valve Train Noise.......................................................1-51 Excessive Vibration...................................................1-51 Check Engine Light Illuminates During Operation.....1-51 Lubrication System...........................................................1-51 Oil Does Not Return To Oil Pan.................................1-51 Engine Uses Too Much Oil Or Smokes Excessively...1-51 Engine Leaks Oil From Cases, Push Rods, Hoses, Etc.............................................................................1-51 Low Oil Pressure.......................................................1-51 High Oil Pressure......................................................1-51 Electrical System..............................................................1-51 Alternator Does Not Charge......................................1-51 Alternator Charge Rate Is Below Normal..................1-51 Speedometer Operates Erratically............................1-52 Transmission.....................................................................1-52 Shifts Hard................................................................1-52 Jumps Out Of Gear...................................................1-52 Clutch Slips...............................................................1-52 Clutch Drags Or Does Not Release..........................1-52 Clutch Chatters..........................................................1-52 Handling...........................................................................1-52 Irregularities..............................................................1-52 Brakes..............................................................................1-52 Brake Does Not Hold Normally.................................1-52 CHASSIS 2.1 SPECIFICATIONS Specifications.....................................................................2-1 Tires...................................................................................2-1 2.2 VEHICLE IDENTIFICATION NUMBER (V.I.N.) General...............................................................................2-3 2.3 FRONT WHEEL Removal .............................................................................2-5 Disassembly.......................................................................2-5 Cast Wheel..................................................................2-5 Cast Wheel, Dual Brakes............................................2-5 Laced Wheel...............................................................2-5 Cleaning and Inspection.....................................................2-8 Assembly............................................................................2-8 Cast Wheel..................................................................2-9 Laced Wheel...............................................................2-9 Installation..........................................................................2-9 2.4 REAR WHEEL Removal...........................................................................2-10 Disassembly.....................................................................2-10 Cleaning and Inspection...................................................2-11 Assembly..........................................................................2-11 Installation........................................................................2-12 2.5 SEALED WHEEL BEARINGS Inspection.........................................................................2-13 Removal...........................................................................2-13 Installation........................................................................2-14 2.6 WHEEL LACING: 17 INCH RIM General.............................................................................2-16 Procedure.........................................................................2-16 Hub: Brake Disc Flange Up.......................................2-16 Hub: Sprocket Side Up..............................................2-17 2.7 WHEEL LACING: 19 INCH RIM Procedure.........................................................................2-19 2.8 WHEEL LACING: 21 INCH RIM General.............................................................................2-23 Procedure.........................................................................2-23 2.9 TRUING LACED WHEELS General.............................................................................2-26 Lateral Truing....................................................................2-26 Radial Truing.....................................................................2-27 IV TABLE OF CONTENTS TABLE OF CONTENTS

2.10 CHECKING CAST WHEEL RUNOUT General.............................................................................2-29 Lateral Runout..................................................................2-29 Radial Runout...................................................................2-29 2.11 VEHICLE ALIGNMENT Inspection.........................................................................2-30 2.12 FRONT BRAKE MASTER CYLINDER General.............................................................................2-32 Removal and Disassembly...............................................2-32 Cleaning and Inspection...................................................2-34 Assembly and Installation.................................................2-34 2.13 FRONT BRAKE CALIPER Removal...........................................................................2-36 Disassembly.....................................................................2-36 Cleaning, Inspection and Repair......................................2-38 Assembly..........................................................................2-39 Installation........................................................................2-39 2.14 REAR BRAKE MASTER CYLINDER General.............................................................................2-41 Removal...........................................................................2-41 Disassembly.....................................................................2-42 Cleaning and Inspection...................................................2-43 Assembly..........................................................................2-43 Installation........................................................................2-43 2.15 REAR BRAKE CALIPER Removal...........................................................................2-45 Disassembly.....................................................................2-45 Cleaning, Inspection and Repair......................................2-47 Assembly..........................................................................2-48 Installation........................................................................2-48 2.16 TIRES General.............................................................................2-50 Removal...........................................................................2-50 Cleaning, Inspection and Repair......................................2-51 Installation........................................................................2-51 Tube Type Tires.........................................................2-51 Tubeless Tires...........................................................2-52 2.17 FRONT FORK Removal...........................................................................2-53 Disassembly.....................................................................2-53 Cleaning and Inspection...................................................2-56 Assembly..........................................................................2-56 Installation........................................................................2-57 2.18 STEERING HEAD Removal...........................................................................2-58 Inspection.........................................................................2-58 Disassembly.....................................................................2-59 Steering Head Bearing Race Removal ....................2-59 Assembly..........................................................................2-60 Installation........................................................................2-60 2.19 BELT GUARD Removal...........................................................................2-61 Installation........................................................................2-61 2.20 DEBRIS DEFLECTOR Removal...........................................................................2-62 Installation........................................................................2-62 2.21 THROTTLE CONTROL Removal/Disassembly......................................................2-63 Cleaning and Inspection...................................................2-63 Assembly/Installation........................................................2-63 Throttle Cable Routing......................................................2-63 2.22 REAR SHOCK ABSORBERS General.............................................................................2-65 Removal...........................................................................2-65 Inspection.........................................................................2-65 Installation........................................................................2-65 2.23 REAR FORK Removal...........................................................................2-66 Disassembly.....................................................................2-67 Cleaning and Inspection...................................................2-67 Assembly..........................................................................2-67 Installation........................................................................2-67 2.24 CLUTCH CONTROL Removal...........................................................................2-68 Installation........................................................................2-68 2.25 HANDLEBARS: ALL BUT FXDWG/FXDF Removal...........................................................................2-69 All Models..................................................................2-69 FXD/FXDC Models....................................................2-69 FXDB.........................................................................2-69 FXDL Models.............................................................2-70 Installation........................................................................2-70 FXD/FXDC Models....................................................2-70 FXDB Models............................................................2-71 FXDL Models.............................................................2-71 All Models..................................................................2-71 2.26 HANDLEBARS: FXDWG/FXDF Removal...........................................................................2-72 Installation........................................................................2-72 2.27 FRONT FENDER Removal...........................................................................2-75 Installation........................................................................2-75 2.28 REAR FENDER General.............................................................................2-76 Removal....................................................................2-76 Tail Lamp/Turn Signal Harness Routing....................2-76 Installation.................................................................2-76 FXDWG/FXDF..................................................................2-77 Removal....................................................................2-77 Installation.................................................................2-77 FXD, FXDC, FXDB and FXDL Models.............................2-77 TABLE OF CONTENTS V TABLE OF CONTENTS

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2008 Harley-Davidson Dyna FXD Models Service Manual SET Wide Glide Screamin Eagle Dyna Low Rider Super Glide Street Bob

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