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HARLEY DAVIDSON BIG TWIN SPIGET MOUNT CARBURETOR INSTALLATION MANUAL

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Filed Under (Harley Davidson) by admin on 26-03-2012

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A. BEFORE INSTALLATION OF YOUR NEW ZENITH CARBURETOR, NSPECT THE RUBBER MANIFOLD SEAL FOR NICKS,CRACKS, OR DEBRIS. APPLYING A LIGHT FILM OF PETROLEUM BASED LUBRICANT AROUND THE INSIDE LIP OF THE RUBBER SEAL WILL ALLOW THE CARBURETOR TO SLIP INTO PLACE EASIER. B. BEFORE ACTUAL INSTALLATION OF UNIT INTO MANIFOLD, THROTTLE CABLES SHOULD BE HOOKED TO THETHROTTLEWHEEL.MAKESURETHATTHE PULL CABLE IS LOCATEDPROPERLY TO OPEN THE THROTTLE PLATE (IN SOME APPLICATIONS THROTTLE CABLE SLACK MAY NEED TO BE ADJUSTED FOR PROPER HOOKUP AND OPERATION) SEE FIG. #1 C. AFTER THROTTLE CABLES ARE PROPERLY HOOKED UP,UNITCAN BE INSERTED INTO MANIFOLD. MAKE SURE THAT UNIT IS FULLY SEATED. WITH CARBURETOR SEATED INTO MANIFOLD AND FUEL LINE HOOKED UP TO FUEL INLET, INSTALL CHOKE CABLE AND HOOK TO CHOKE LEVER. PLACE AIR INTAKE GASKET ON END OF CARBURETOR, NEXT PLACE INTAKE ADAPTOR OVER INTAKE GASKET. SEE FIG#2 ZENITH MOD.16P12 SPIGET MOUNT CARBURETOR -HARLEY DAVIDSON ™ BIG TWIN INSTALLATION INSTRUCTIONS FIG. # 1 FIG. # 2 D. WITH ADAPTOR IN PLACE, LOCATE THE STOCK AIR BOX OVER THE ADAPTOR, UTILIZING THE STOCK AIR BOX GASKET (THERESHOULDBENO GAPS BETWEEN ADAPTOR, AIRBOX OR CARBURETOR WHEN PROPERLY INSTALLED) STAND-OFF SPACERS PROVIDED ARE TOBEPLACEDBETWEENAIR BOX& ENGINE HEADS BEFORE INSTALLING THE VENT/RETAINING BOLTS. FOR EVALUATION ENGINES STOCK VENT BOLTS CAN BE USED WITH LARGERI.D. SPACER PROVIDED. SEE FIG#3 E. WITH AIR BOXSECURELY IN PLACE, INSTALL THE AIR FILTER COVER RETAINING BRACKET AND FILTER USING THE STOCKBOLTS, AND REPLACE AIR FILTER COVER AND SECURE WITH STOCK BOLT. SEE FIG#4 F. AFTER INSTALLATION IS COMPLETE AND FUEL FLOW HAS BEEN RE-ESTABLISHED, CHECK FOR ANY LEAKS BEFORE STARTING ENGINE. H. AFTER STARTING ENGINE, SOME ADJUSTMENTS OF IDLE AND MAIN JET MAYBE REQUIRED FOR PROPER OPERATION. AFTER ADJUSTMENTS HAVE BEEN MADE AND WITH ENGINEAT IDLE, TURN WHEEL FULLYTOLEFTANDRIGHT.ANYCHANGEIN IDLE SPEED INDICATES THROTTLE CABLES ARE TOO TIGHT AND MORE SLACK MUST BE PROVIDED.

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KTM 250/ 300/ 380 SX,MXC,EXC ENGINE REPAIR MANUAL

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Filed Under (KTM) by admin on 12-11-2010

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Repair manual KTM 250 / 300 / 380 Art No 3206004 -E 2-2C main jet jet needle jet needle air control screw idle adjusting screw idle jet throttle valve Idling range A Operation with closed throttle valve. This range is influenced by the position of the air control screw 1 and the idle adjusting screw 2 . Only make adjustments when the engine is hot. To this end, slightly increase the idling speed of the engine by means of the idle adjusting screw. Turning it clockwise produces a higher idling speed and turning the screw counterclockwise produces a lower idling speed. Create a round and stable engine speed using the air control screw (basic position of the air control screw = open by 1.5 turns). Then adjust to the normal idling speed by means of the idle adjusting screw. Opening up B Engine behavior when the throttle opens. The idle jet and the shape of the throttle valve influences this range. If, despite good idling-speed and part-throttle setting, the engine sputters and smokes when the throttle is fully opened and develops its full power not smoothly but suddenly at high engine speeds, the mixture to the carburetor will be too rich, the fuel level too high or the float needle is leaking. Part-throttle range C Operation with partly open throttle valve. This range is only influenced by the jet needle (shape and position). The optimum part-throttle setting is controlled by the idling setting in the lower range and by the main jet in the upper range. If the engine runs on a four-stroke cycle or with reduced power when it is accelerated with the throttle partly open, the jet needle must be lowered by one notch. If then the engine pings, especially when accelerating under full power at maximum engine revs, the jet needle should be raised. If these faults should occur at the lower end of the part throttle range at a four-stroke running, make the idling range leaner; if the engine pings, adjust the idling range richer. Full throttle range D Operation with the throttle fully open (flat out). This range is influenced by the main jet and the jet needle. If the porcelain of the new spark plug is found to have a very bright or white coating or if the engine rings, after a short distance of riding flat out, a larger main jet is required. If the porcelain is dark brown or black with soot the main jet must be replaced by a smaller one. mixture too rich: too much fuel in proportion to air mixture too lean: not enough fuel in proportion to air 1 2 OPERATING RANGES OF THE CARBURETOR 2-3C Carburetor adjustment Basic information on the original carburetor setting The original carburetor setting was adapted for an altitude of approx. 500 meters (1600 ft.) above sea level, and the ambient temperature of approx. 20°C (68°F), mainly for off-road use and central European premium-grade fuel (ROZ 95 MOZ). Mixing ratio 2-stroke motor oil : super fuel 1:40 – 1:60. Basic information on a change of the carburetor setting Always start out from the original carburetor setting. Essential requirements are a clean air filter system, air-tight exhaust system and an intact carburetor. Experience has shown that adjusting the main jet, the idling jet and the jet needle is sufficient and that changes of other parts of the carburetor will not greatly affect engine performance. RULE OF THUMB:

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HARLEY DAVIDSON VRSC CHROME WHEEL KITS INSTALLATION MANUAL

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Filed Under (Harley Davidson) by admin on 18-03-2011

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Installation To prevent accidental vehicle start-up, which could cause death or serious injury, remove maxi-fuse before proceeding. (00251a) 1 WARNING 1 WARNING ® Kit Numbers 41279-04, 41282-04, 41463-05, 41467-05, 41633-05, 41634-05, 41640-05, and 41639-05 1 of 3 Figure 1. Rear Wheel Removal i02495 1. Axle (keep) 2. Axle adjuster (keep) 3. Axle nut (keep) 4. “E”-clip (keep) 5. Spacer (3) (keep) 6. Torx screw (5) (replace) 7. Brake disc (keep) 8. Wheel assembly (replace) 9. Valve cap (keep) 10. Compensator bowl (keep) 11. Compensator cushion (keep) 12.12 pt screw (5) (keep) 13. Lockwasher (5) (keep) 14. Sprocket assembly (keep) 1. Refer to the Service Manual and follow the MAXI-FUSE instructions to remove the right-side cover and maxi- fuse. Proceed to Step 2 for the wheel being replaced. Rear Wheel 2. See Figure 1. Remove the rear wheel per the REAR WHEEL, REMOVAL instructions in the Service Manual. 3. Disassemble, clean and inspect all parts to be re-used per Service Manual instructions. 4. Re-assemble all saved components to the new chrome rear wheel assembly. See REAR WHEEL, ASSEMBLY in the Service Manual. Do not re-use brake disc screws. Re-using disc screws can result in torque loss and damage to rotor and/or brake assembly. (00319b) 5. Fasten the brake disc to the valve stem side of the wheel using the Torx®screws from the kit. Install the compensator bowl with the 12-point screws and lockwashers saved earlier. 6. Install the new wheel to the rear fork. Refer to REAR WHEEL, INSTALLATION in the Service Manual. Proceed to Step 7. Front Wheel 2. See Figure 2. Remove the front wheel per the FRONT WHEEL, REMOVAL instructions in the Service Manual. 3. Disassemble, clean and inspect all parts to be re-used per Service Manual instructions. Mark the left and right brake discs so they can be re-installed to the same location. 4. Re-assemble all saved components to the new chrome front wheel assembly. See FRONT WHEEL, ASSEMBLY in the Service Manual. Do not re-use brake disc screws. Re-using disc screws can result in torque loss and damage to rotor and/or brake assembly. (00319b) 5. Using the Torx ® shoulder bolts from the kit, and the saved spring washers fasten the brake discs to the same side of the wheel from which they were removed. 6. Install the new wheel to the front forks per the FRONT WHEEL, INSTALLATION instructions in the Service Manual. Proceed to Step 7. Front and Rear Wheels 7. Refer to the Service Manual and follow the MAXI-FUSE instructions to replace the maxi-fuse and right-side cover. After servicing brakes and before moving motorcycle, pump brakes to build brake system pressure. Insufficient pressure can adversely affect brake performance, which could result in death or serious injury. (00279a) After servicing the brake system, test brakes at low speed. If brakes are not operating properly, testing at high speeds can cause loss of control, which could result in death or serious injury. (00289a) Maintenance and Cleaning Chrome parts must be maintained regularly to ensure that they keep their original shine and luster. 1. Clean heavily-soiled wheel surfaces using Harley Wheel and Tire Cleaner, part number 94658-98, applied with Harley Wheel and Spoke Brush, part number 43078-99. 2. Thoroughly clean chrome with a good quality chrome cleaner, such as Harley Bright Chrome Cleaner, part number 94683-99. 3. After cleaning and polishing, seal the finish with a good quality sealer such as Harley Glaze Polish and Sealant, part number 99701-84

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SUZUKI GSX-R1000 SERVICE MANUAL

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Filed Under (Suzuki) by admin on 12-11-2010

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Cover the throttle bodies to prevent anything from dropping into the engine. 1. Remove the front seat and disconnect the battery. (Refer to Service Manual, Page 8-8) 2. Lift up the fuel tank. (Refer to Service Manual, Page 5-3) 3. Remove the air cleaner box. (Refer to Service Manual, Page 5-14) 4. Remove and replace the ISC valve. (Refer to Service Manual, Page 5-25) NOTE: Since the ECM is also being replaced there is no need to perform the ISC valve preset operation. 5. Install the air cleaner box in reverse order of removal. (Refer to Service Manual, Page 5-14) 6. Lower the fuel tank. (Refer to Service Manual, Page 5-3) 7. Remove the upper seat rail plate. Disconnect and remove the ECM. (Figure 1) @ ISC Valve Mounting Screw Torque: 2.1± ±0.6 N.m (1.5± ±0.4 lb-ft) ! Carefully insert the ISC valve straight into the throttle body hole to prevent damaging the o-ring. Turn the ISC valve slightly to confirm that the o-ring has not twisted. Using the new screw provided in the replacement parts kit, make sure the screw is completely seated on the plate after the screw has been tightened to the specified torque. 4. Remove and replace the ISC valve. (Refer to Service Manual, Page 5-25) NOTE: Since the ECM is also being replaced there is no need to perform the ISC valve preset operation. ! Cover the throttle bodies to prevent anything from dropping into the engine. 1. Remove the front seat and disconnect the battery. (Refer to Service Manual, Page 8-8) 2. Lift up the fuel tank. (Refer to Service Manual, Page 5-3) 3. Remove the air cleaner box. (Refer to Service Manual, Page 5-14) REPLACEMENT PROCEDURE: 8. Install the new ECM in reverse order of removal. Apply thread lock to the upper plate mounting bolts when reinstalling the upper seat rail plate.

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HARLEY DAVIDSON SCREAMIN' EAGLE TWIN CAM 110 (1800 CC) CONVERSION KIT INSTALLATION MANUAL

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Filed Under (Harley Davidson) by admin on 19-02-2011

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REMOVAL Prepare for Service 1. Position motorcycle on a suitable lift. NOTE If vehicle is equipped with Harley-Davidson Smart Security System, see owner’s manual for instructions to disarm the system. To prevent accidental vehicle start-up, which could cause death or serious injury, disconnect negative (-) battery cable before proceeding. (00048a) 2. Disconnect battery cables, negative (-) battery cable first. 3. Remove seat according to the instructions in the service manual. 4. Refer to service manual to remove left saddlebag and side cover. 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. (00330a) 5. Remove fuel tank according to the instructions in the service manual. Remove Engine Components 1. Remove existing air cleaner assembly. Discard backplate but save remaining parts. Refer to AIR CLEANER REMOVAL in service manual. 2. Remove existing exhaust system. Refer to EXHAUST SYSTEM REMOVAL in service manual. 3. Remove engine from chassis following the instructions in the service manual. 4. Disassemble engine top end and bottom end. Refer to appropriate ENGINE sections in service manual. 5. Remove existing clutch diaphragm spring. Refer to CLUTCH REMOVAL in service manual. The procedures in this instruction sheet should be performed by one experienced in precision measuring techniques. Failure to meet tolerances called for in this instruction sheet can result in engine damage. (00511b) -J04793 1 2 is03517 1. O-ring counterbore 2. Spigot bore Figure 1. Spigot Bore and O-Ring Counterbore Dimensions Table 1. Spigot Bore and O-Ring Counterbore Dimensions Depth Bore Description 1.625 +/- 0.010 in. (41.3 +/- 0.25 mm) 4.205 +/- 0.010 in. (107 +/- 0.25 mm) Spigot Bore 0.085 +/- 0.003 in. (2.16 +/- 0.08 mm) 4.415 +/- 0.002 in. (112 +/- 0.05 mm) O-Ring Counter- bore is03456 Figure 2. Cylinder Wall MACHINE CRANKCASE Crankcase Boring Preparation NOTE During final assembly of the engine, Harley-Davidson recommends replacing the OE cylinder studs with Screamin’ Eagle High Tensile Studs (16505-01). 1. Remove cylinder studs from the engine crankcase. 2. Mask off all bearings and oil holes to prevent debris and contaminants from entering those areas. 3. Inspect and clean engine case mating surfaces. 4. See Figure 6. Reassemble engine case with OE screws, except the top center screw between the cylinders, and tighten to specifications listed in service manual. NOTE To prevent damage to crankcase boring tool, it is important to replace the top center screw with a modified top center screw (1093). This screw is included in the Crankcase Boring Tool Kit (94419-06) and can be purchased separately from a Harley- Davidson dealer. 5. Install modified top center screw (1093) between the cylinders and tighten to 50-90 in-lbs (5.6-10.2 Nm). 6. See Figure 1 and Table 1. Machine crankcase cylinder spigot bore and O-ring counterbore to the dimensions shown. Modify Crankcase

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HARLEY DAVIDSON CHROME 1.00 INCH (25.4 MM) DIAMETER HANDLEBAR KITS REMOVAL AND INSTALLATION MANUAL

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Filed Under (Harley Davidson) by admin on 11-03-2011

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REMOVAL To prevent accidental vehicle start-up, which could cause death or serious injury, remove main fuse before proceeding. (00251b) 1. Refer to the service manual and follow the instructions given to remove the main fuse. 2. Remove the outer fairing. See the service manual. 3. Remove the fairing cap. See the service manual. 4. FLHX Models: Handlebar-mounted mirrors (purchased separately) are required for proper installation of this handlebar. Removal of the inner fairing may be required, refer to the service manual. If fairing-mounted mirrors are being removed: Install the two small black plugs and large black plugs (purchased separately) to plug the fairing mirror holes. Direct contact of D.O.T. 4 brake fluid with eyes can cause irritation. Avoid eye contact. In case of eye contact flush with large amounts of water and get medical attention. Swallowing large amounts of D.O.T. 4 brake fluid can cause digestive discomfort. If swallowed, obtain medical attention. Use in well ventilated area. KEEP OUT OF REACH OF CHILDREN. (00240a) D.O.T. 4 brake fluid will dama ge painted and bod y panel surfaces it comes in contact with. Always use caution and protect surfaces from spills whenever brake work is performed. Failure to comply can result in cosmetic damage. (00239b) NOTE Immediately wipe up any brake fluid spillage with a clean, dry, soft cloth. Follow up by thoroughly wiping affected area with a clean, damp, soft cloth (small spills) or washing with a large quantity of soapy water (large spills). Cover nearby motorcycle surfaces with a polyethylene protective sheet to help protect against damage to finish caused by spillage or splashes of DOT 4 brake fluid. 5. Drain the brake fluid from the front brake reservoir and lines per the instructions in the service manual. NOTE Cover the front fender and the fuel tank with clean shop towels to prevent scratching. 6. Models with Radio: Remove the radio. See the service manual. Models without Radio: Remove the storage box. See the service manual. a. The four socket head screws fastening the radio or storage box to the left and right radio support brackets can be accessed through the oblong holes in the fairing brackets. Use a long shank ball-end socket to remove the screws. b. Pull the radio or storage box forward to remove it from the opening in the inner fairing. Remove brake line components carefully. Damage to seating surfaces can cause leakage. (00320a) 7. Remove and retain the button head screw on the underside of the fork stem and bracket assembly that holds the brake line manifold tee. 8. Note the front brake line routing and the orientation of the banjo fittings. Disconnect the brake line from the front brake calipers and the front brake master cylinder assembly. Save the banjo bolts, but discard the two gaskets found at each banjo fitting. See the service manual. 9. Remove the front brake line assembly. NOTES Refer to the parts catalog for this year and model for a replacement OE brake line assembly and clutch cable, if needed. Ask a Harley-Davidson dealer about the selection of Genuine Motor Accessory Custom Braided Clutch Cables and Brake Lines that are available. 10. Remove the front brake master cylinder and clutch lever assemblies from the handlebar. 11. Disconnect the clutch cable from the clutch lever. See the service manual.

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KTM 250-525 SX, MXC, EXC RACING ENGINE REPAIR MANUAL

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Filed Under (KTM) by admin on 07-02-2012

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TM REPAIR MANUAL IN LOOSE-LEAF FORM STORING THE REPAIR MANUAL IN THE BINDER -Put the index into the binder. -Put the front page of the repair manual (210×297 mm) into the transparent pocket provided for this purpose on the outside of the binder. -Put the spine label (170×45 mm) into the transparent pocket provided for this purpose on the spine of the binder. -Put the summary list of contents (150×297 mm) into the transparent pocket provided for this purpose on the inside of the binder or insert this page on the beginning of the manual. -Then insert the individual chapters of the manual between the sheets of the index according to the page number printed in the right bottom corner of each page. Example: page no. 3-5 3 = chapter 3 5 = page 5 All pages with a page number that begins with the digit 3, for example, must be put under the index heading „Chapter 3″. -Index sheets that have not been marked with a certain chapter are for your personal convenience. T he respective headings can be entered in the list of contents. Remove page (s) Replace by page (s) Insert page (s) after page 2-1 / 2-7 2-1C 2-7C to 2-9C 3-1 3-1C 4-1 to 4-14 4-1C to 4-13C 5-1 / 5-3 5-1C / 5-3C 5-6 to 5-8 5-6C to 5-8C 5-12 to 5-26 5-12C to 5-27C 6-1 / 6-4 6-1C / 6-4C 6-7 to 6-16 6-7C to 6-17C 7-1 to 7-2 7-1C to 7-2C 7-7 to 7-11 7-7C to 7-11C 8-1 to 8-13 8-1C to 8-21C 9-1 9-1C 9-10 to 9-13 9-10C to 9-16C 10-1 10-1C 10-8C to 10-11C 11-1 11-1C 11-11C to 11-13C
Repair manual KTM 250-525 SX, MXC, EXC RACING Art.-No. 3206007 -E EXPLANATION – UPDATING Edition 01/2003 3.205.85-ERepair Manual 400/520 SX, MXC, EXC RACING Basic version Model year 2000 (Engine number with first digit “0″) 2/2000 3.210.01-EUpdating of Rep.Manual 3.205.85-E Model year 2001 (Engine number with first digit “1″) 1/2001 3.210.44-EUpdating of Rep.Manual 3.205.85-E Model year 2002 (Engine number with first digit “2″)

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HARLEY DAVIDSON SOFTAIL 6 SPEED TRANSMISSION – COMPLETE INSTALLATION MANUAL

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Filed Under (Harley Davidson) by admin on 13-04-2011

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Removal of Original Transmission 1. Position motorcycle on a suitable lift. To prevent accidental vehicle start-up, which could cause death or serious injury, disconnect battery cables (negative (-) cable first) before proceeding. (00307a) Disconnect negative (-) battery cable first. If positive (+) cable should contact ground with negative (-) cable connected, the resulting sparks can cause a battery explosion, which could result in death or serious injury. (00049a) 2. Refer to the Service Manual and follow the instructions given to remove the seat and disconnect the battery cables, negative cable first. 3. Refer to the TRANSMISSION CASE REMOVAL in the Service Manual and follow the instructions given to remove the components with the following steps. 4. Refer to PRIMARY CHAINCASE COVER REMOVAL in the Service Manual and follow the instructions given to remove the primary chaincase cover. Wear safety glasses or goggles when removing or installing retaining rings. Retaining rings can slip from the pliers and could be propelled with enough force to cause serious eye injury. (00312a) 5. See the PRIMARY CHAIN and COMPENSATING SPROCKET REMOVAL in the Service Manual and use the instructions given to remove the primary drive assem- bly. 6. Refer to the STARTER REMOVAL in the Service Manual and remove the the starter. 7. See the VEHICLE SPEED SENSOR section and unplug the vehicle speedometer sensor connection and remove the mounting bolt. Lift sensor from the transmission case and set aside for later re-installation. 8. Refer to NEUTRAL SWITCH and disconnect the connectors from the neutral switch. 9. Refer to PRIMARY CHAINCASE in the Service Manual and follow the instructions given to remove the primary chaincase housing. 10. Refer to EXHAUST SYSTEM in the Service Manual and remove the exhaust. 11. See the REAR WHEEL REMOVAL and loosen but, do not remove rear axle to relieve drive belt tension and remove the belt from the sprocket from the transmission. 12. Refer to OIL TANK REMOVAL in the Service Manual and follow the instructions given to drain, remove the oil tank and detach the vent, feed and return lines. 13. Refer to CLUTCH CONTROL in the Service Manual and follow the instructions given to remove the clutch cover and disconnect the clutch cable end from the cover. Set the cable aside for later re-installation

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HARLEY DAVIDSON DYNA STATOR AND ROTOR KIT INSTALLATION MANUAL

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Filed Under (Harley Davidson) by admin on 30-03-2011

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REMOVAL To prevent accidental vehicle start-up, which could cause death or serious injury, disconnect negative (-) battery cable before proceeding. (00048a) 1. Disconnect negative battery cable. See BATTERY MAINTENANCE in Service Manual. 2. Remove primary cover, primary drive, and clutch. See DRIVE COMPONENTS in Service Manual. 3. Remove primary chaincase according to the instructions in the Service Manual. 4. See Figure 2. Pull off the alternator rotor (1) using two bolts inserted through the holes in the rotor face. 5. Remove the two T-27 TORX screws (2). 6. Unplug the voltage regulator and remove the stator (3). See VOLTAGE REGULATOR in Service Manual. 7. Disassemble connector [46B] (A). See DEUTSCH ELECTRICAL CONNECTORS in Service Manual. NOTE Contact cleaner, alcohol, or glass cleaner sprayed on rubber grommet (B) will provide lubrication when pulling it through crankcase hole. 8. Move grommet (3) to one side and spray contact cleaner into gap. Repeat for other side. Pull rubber grommet (B) through crankcase hole. 9. Pull wires through crankcase hole. INSTALLATION 1. Insert wires through crankcase hole. 2. See Figure 1. Push rubber grommet (B) through crankcase hole. If necessary, apply the same lubricant used during removal. 3. Insert wires into connector [46B] (A). 4. Mate connector [46]. See VOLTAGE REGULATOR in Service Manual. is03776 Figure 1. Voltage Regulator 5. See Figure 2. Install the stator (3) on the crankcase and fasten in place using new TORX screws (2). Tighten to 55-75 in-lbs (6.2-8.4 Nm). 6. Install the rotor (1) on the sprocket shaft. 7. Apply Loctite Threadlocker 262 (red) to sprocket nut threads. Tighten sprocket nut to 150-165 ft-lbs (203.4- 223.7 Nm). 8. Install primary chaincase according to the instructions in the Service Manual. 9. Install clutch, primary drive, and primary cover. See DRIVE COMPONENTS in Service Manual. 10. Connect negative battery cable. See BATTERY MAINTENANCE in Service Manual

KTM 60 SX / 65 SX REPAIR MANUAL ENGINE

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Filed Under (KTM) by admin on 12-11-2010

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Carburetor adjustment Basic information about the original carburetor setting The original carburetor setting was adapted for an altitude of approx. 500 meters (1600 ft.) above sea level, and the ambient temperature of approx. 20°C (68°F), mainly for off-road use and central European premium-grade fuel (ROZ 95). Mixing ratio 2-stroke motor oil : super fuel 1:40 . Basic information of changing the carburetor setting Always start out from the original carburetor setting. Essential requirements are a clean air filter system, air-tight exhaust system and an intact carburetor. Experience has shown that adjusting the main jet, the idling jet and the jet needle is sufficient and that changes of other parts of the carburetor will not greatly affect engine performance. RULE OF THUMB: high altitude or high temperatures  choose leaner carburetor adjustment low altitude or low temperatures  choose richer carburetor adjustment * WARNING * -ONLYUSE PREMIUM – GRADE GASOLINE ROZ 95 MIXED WITH HIGH – GRADE TWO – STROKE ENGINE OIL . OTHER TYPES OF GASOLINE CAN CAUSE ENGINE FAILURE , AND USE OF SAME WILL VOID YOUR WARRANTY . -ONLYUSE HIGH – GRADE 2- STROKE ENGINE OIL OF KNOWN BRANDS ( I . E .SHELL ADVANCE RACING X). -NOTENOUGH OIL OR LOW – GRADE OILCAN CAUSE EROSION OF THE PISTON . USING TOO MUCH OIL , THE ENGINE CAN START SMOKING AND FOUL THE SPARKPLUG . -INTHE CASE OFA LEANER ADJUSTMENT OF THE CARBURETOR PROCEED CAUTIOUSLY . ALWAYSREDUCETHEJETSIZEINSTEPSOFONENUMBERTOAVOID OVERHEATING AND PISTON SEIZURE . NOTE: If despite a changed adjustment the engine does not run properly, look for mechanical faults and check the ignition system. Basic information on carburetor wear As a result of engine vibrations, throttle valve, jet needle, and needle jet are subjected to increased wear. This wear may cause carburetor malfunction (e.g., overly rich mixture). Therefore, these parts should be replaced after 1000 hours of using. Idling range – A Operation with closed throttle valve. This range is influenced by the idle adjusting screw 1 . Only make adjustments when the engine is hot. The idling speed can be changed by turning the idle adjusting screw. Turning it clockwise produces a higher idling speed and turning the screw counterclockwise produces a lower idling speed. Opening up – B Engine behavior when the throttle opens. The idle jet and the shape of the throttle valve influences this range. If, despite good idling-speed and part-throttle setting, the engine sputters and smokes when the throttle is fully opened and develops its full power not smoothly but suddenly at high engine speeds, the mixture to the carburetor will be too rich, the fuel level too high or the float needle is leaking. Part-throttle range – C Operation with partly open throttle valve. This range is only influenced by the jet needle (shape and position). The optimum part-throttle setting is controlled by the idling setting in the lower range and by the main jet in the upper range. If the engine runs on a four-stroke cycle or with reduced power when it is accelerated with the throttle partly open, the jet needle must be lowered by one notch. If then the engine pings, especially when accelerating under full power at maximum engine revs, the jet needle should be raised. If these faults should occur at the lower end of the part throttle range at a four-stroke running, make the idling range leaner; if the engine pings, adjust the idling range richer

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