INSTRUCTIONS - Harley
Contents
1. INSTRUCTIONS REV 10 23 03 Kit Number 29605 00A THUNDER SLIDE JET KIT i01755f tif Vacuum piston slide with diaphragm Jet needle Slide spring Slide spring seat Figure 1 Vacuum Piston Chamber Slide Components 2 Carefully remove the original rubber diaphragm from the metal slide by gently pulling at the edge of the diaphragm in a circular motion until diaphragm is out of the stock slide retaining groove The stock rubber diaphragm will be installed on the Thunder Slide 3 To assemble the stock diaphragm on the Thunder Slide first install the larger slide retainer 9 with the radial grooves facing up on the slide You will notice that the slide has a collar on the top which you will have to push the larger retainer past 4 Lay the diaphragm on the lower retainer in the same direction it was on the stock slide 5 Press the small slide retainer 8 with the grooves fac ing down on top of the diaphragm You should hear a snap as it all goes together Make sure it is flat and secured on top of the slide and that the diaphragm is centered 1of5 DYNOJET Kit Installation NOTE These are recommended starting points Jet changes may be required during tuning 1 See Figure 2 and Service Parts Illustration Place the car buretor upside down on a bench Remove the chamber assembly and the carburetor float bowl Remove the stock main jet and emulsion tube sometimes referred to as the main jet holde2. It is important to note whether the bike starts hard only when you let it sit for a period of time or starts hard any time when hot Both of these conditions are usually rich problems If you have trouble after the bike sits then check for gas tank venting problems Also Check a Idle mixture screw turned out too far b Float bowl is not overflowing with gas c Pilot Slow jet not stock 3 Motorcycle idles rough until it reaches normal running temperature a Idle mixture screw set too lean Turning counterclockwise will enrich mixture 4 Motorcycle idles well until it reaches normal running temperature then idles rough and possibly stalls a Idle mixture screw turned out too far b Pilot Slow jet not stock c Choke plunger or choke cable not returning to closed position J03139 5 Motorcycle starts but does not idle at all a Idle mixture screw turned out too far b Vacuum hose disconnected c Pilot Slow jet plugged d Manifold air leak e Idle turned down too far 6 Motorcycle starts but does not idle at all Bike seems to rev slowly off idle with possible black smoke Idle mixture screw turned out too far Pilot Air Jet plugged a b c Choke not returning to off position d Pilot Slow jet not stock e Fuel leaking past needle valve 7 Low speed and cruising problems Engine does not accept throttle past idle engine accepts past throttle but pops through carburetor engin
3. 13 provided carefully drill through the the plug Use the screw 14 provided to secure and remove the plug 4 Carefully turn the mixture screw clockwise until it seats then turn out 3 1 2 turns J03139 i01755h tif Idle Mixture Plug Main Jet Pilot Slow Jet Figure 3 Idle Mixture Plug Location NOTE If the Idle mixture screw setting exceeds 3 5 turns to achieve low speed drivability when running a free flowing aftermarket exhaust and or other modifications install a larger pilot slow jet Carburetor Installation For installation procedures refer to the Carburetor section in a the Service Manual Use fuel hose clamp 15 provided in kit NOTE Prior to performing any jetting changes ensure the carbure tor and manifold are installed correctly and there are no intake leaks Also make sure the float is adjusted correctly Refer to the Fuel System section in the Service Manual for float adjustment procedures TROUBLE SHOOTING GUIDE NOTE Proper idle before troubleshooting is required WARNING BEFORE STARTING THE MOTORCYCLE Check fuel line and vacuum line Open and close the throttle check ing for smoothness and full operation Check accelera tor pump action to make sure actuation rod is installed correctly in float bowl Turn on fuel petcock and check for any fuel leaks Check on Initial Start Up 1 Start the engine turn the handlebars from lock to unlock to ensure cables are routed pr
4. CM TDR HARLEY DAVIDSON WY General J03139 This kit is designed for use on 2000 and later Twin Cam 88 model carbureted motorcycles Kit Contents See Service Parts Illustration and parts list at the end of this sheet for kit contents NOTE Refer to applicable Service Manual for detailed instructions to remove necessary components Service Manuals are available from any Harley Davidson Dealer CAUTION Harley Davidson motorcycles equipped with some Screamin Eagle high performance engine parts may not be used on public roads and in some cases must be restricted to closed course competition This engine related performance part is intended for racing applications and is not legal for sale or use in California on pollution controlled motor vehicles Engine related performance parts are intended for the experienced rider only WARNING When servicing the fuel system do not smoke or allow open flame or sparks in the vicinity Gasoline is extremely flammable and highly explosive which could result in death or serious injury Carburetor Removal Refer to the appropriate Service Manual for 2000 and later Carbureted Twin Cam model motorcycles and follow the instructions in the Carburetor section to remove the Carburetor Installation Thunder Slide Installation 1 See Figure 1 and Service Parts Illustration Remove the carburetor top slide spring spring seat jet needle and metal vacuum piston slide
5. e surges when holding steady speed engine is very cold blooded and choke has to be left on for a long time Check that main jet is drilled completely a b Check for vacuum leaks c Check vacuum and hose for leakage d Check float level is not too low e Check accelerator pump operation If the above check out then raise the needle one groove at a time and retest Acceleration Problems Proper idle must be established before off idle troubleshooting is carried out 1 Engine accelerates from down low then goes flat Seems to be worse in high gears a Check needle installation there must be three washers above the E Clip b Check needle shroud installation c Drag pipes will always cause problem d Poor choice of cam will cause flat spots in mid range If the above check out lower needle one groove at a time and retest 3 of 5 2 Engine accelerates to red line but flattens out Seems to be worse in higher gears and when hot a Check parameters on fact sheet main jet size for your application b Check intake air flow Many aftermarket filters do not flow as well as stock ones c Check exhaust flow Some aftermarket pipes flow much worse than stock ones but may be noisier If the above check out lower the main jet size 3 Engine seems sluggish when accelerating in low gears or when cold Seems to be better when rolling and in high gear a Try restricting the air entering the air filte
6. operly 2 Blip the throttle 2 to 3 times to ensure linkage is not sticking 2of5 3 Check the engine kill switch for correct operation After completing your installation and following the proper safety precautions the machine should function properly with noticeable performance gains If the machine functions well but does not seem to have any performance gain try needle positions on either side of the base settings to improve performance If the machine has more pronounced troubles in function and performance read through the troubleshooting guide Find the problem description that best matches your trouble and perform the recommended adjustment procedures In some cases more than one description closely resembles your problem If so perform each of the adjustment procedures in the easiest manner or the most logical conclusion Start and Idling Problems Pilot jet must be stock 1 Motorcycle will not start cold It is important to know that your bike will start and idle without your needle slide or main jet installed DYNOJET kits do not alter your stock idle circuit or the starting circuit Also Check a Fuel in the float bowl b Choke plunger for proper operation c Ensure throttle plate is closed Check throttle play d Vacuum leaks vacuum hose and area around intake manifold e Float bowl is not flooding over with gas float damage or dirt in needle valve 2 Motorcycle will not start hot
7. r Ensure that the Needle Jet does not fall out during this procedure Replace the stock emulsion tube with the new DYNOJET emulsion tube 11 provided When the DYNOJET emulsion tube is fully seated there will still be threads visible Install the DYNOJET main jet provided Use the BJ175 main jet with a completely stock bike Use the BJ185 main jet with an aftermarket airbox and or aftermarket exhaust With an aftermarket airbox exhaust and cams use the BJ195 main jet With extensive engine work ie cams pistons head work airbox and exhaust it may be necessary to use the BJ200 main jet i01755g tif Main Jet Holder Emulsion Tube Needle Jet Main Jet Figure 2 Stock Carburetor Jets and Holder 2 See Service Parts Illustration Install the E clip 6 on groove 4 of the new DYNOJET needle 5 Install the new Thunder Slide 7 Dynojet needle 5 needle 10 spacer with stock needle retainer and new Dynojet slide spring 12 into the carburetor body making sure the slide spring is aligned properly NOTE During the next step care must be taken not to drill through the Idle mixture screw The Idle mixture screw is directly underneath the plug be ready to pull back on the drill the instant you break through the plug 3 See Figure 3 and Service Parts Illustration Locate the Idle mixture plug 1 If you see a Idle mixture screw head not plugged proceed directly to the adjusting pro cedure With the plug drill bit
8. r If problem gets better then try going to a larger main jet J03139 4 Bike functions normally with the exception of popping when decelerating a Check exhaust leaks and intake leaks If the above check out try enriching mixture screw slightly making sure bike idles smooth For Technical assistance Contact your DYNOJET distributor or call Dynojet U S A 800 992 4993 2191 Mendenhall Dr Suite 105 North Las Vegas NV 89031 Tel 702 399 1423 Fax 702 399 1431 8am 5pm Pacific Time Monday through Friday 4of5 im S e p t Kit No 29605 00A Date 10 03 ay Crvice Parts THUNDER SLIDE JET KIT i01755d 9 a Stock Diaphragm Groove 1 is at the top Place E clip in groove 4 from the top _ 12 Stock Part Needle Hole CC 40 ODDO Thunder Slide Stock Part Bottom View 1 J03139 Description Main Jet Main Jet Main Jet Main Jet Fuel Jet Needle E Clip Thunder Slide Diaphragm Retainer Upper Part Number BJ175 BJ185 BJ195 BJ200 DNO891 DE0001 DTS006 DTS002 Description Diaphragm Retainer Lower Needle Spacer Emulsion Tube Slide Spring Plug Drill not shown Screw not shown Clamp not shown Part Number DTS004 THNRO1 DET007 DSP088 DD 5 32 DS0001 9946 5of5
Download Pdf Manuals
Related Search