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YAMAHA RAPTOR 350 Removing stock carburetor and cables

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Filed Under (Yamaha) by admin on 18-01-2012

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remove seat and gas tank. Make sure fuel petcock is in “off” position. 2. Remove throttle cable paying close attention to routing, as the new cable (s) will need too be routed the same. 3. Remove stock carburetor and stock throttle housing. Stuff a clean, dry rag into manifold to keep debris out of motor. 4. Remove stock air box. 5. Remove choke cable from handlebars. 6. Remove carb vent line from bike. Carburetor installation 1. Carefully trim the rubber alignment tab off of the face of the manifold with a razor blade or side cutters. 2. Remove the hex pipe plug from the carb cap using a 11mm or 7/16 wrench. Do not discard plug, as it will be needed later. Install the metering adjustment tool included in the hardware kit. Do not over-tighten as damage may occur to cap. 3. Attach fuel line to carburetor and secure with clamp. 4. Install remote idle cable into tab on top of carburetor. See main manual for this step. NOTE: Nut must be removed from cable before installation 5. Place carburetor into manifold

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HSR Carburetor Total Kits Installation Instructions

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Filed Under (Mikuni) by admin on 31-10-2010

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Intake Manifold: 1. Install MAP sensor in Mikuni manifold (Twin Cam only). 2. Attach the Mikuni manifold to the engine. Align the manifold before tightening the bolts. The flange surface of the Mikuni manifold should be parallel with the front of the engine’s cam cover. Use a level or angle meter to check this. Tighten the manifold bolts. 3. Attach the rubber flange to the Mikuni manifold with the furnished 5/16″x3/4″ bolts and washers. Choke Cables: Mikuni & Harley-Davidson Route the cable with largest radius bends possible. Check the cable for free-play after installation. If there is no free-play, the engine may run rich and deliver poor performance or low fuel mileage. Harley Cable (Twin Cam Kits: 42-19, 45-4) : 1. Remove the Harley choke cable from the stock carb. 2. Remove the spring and plunger from the cable. 3. Remove the spring and plunger from the Mikuni. 5. Install the Mikuni spring and plunger onto the Harley choke cable. Change nothing else; be sure to use the Harley plastic nut, not the Mikuni nut (See Figure 1). Total Kit Installation Instructions The HSR series carburetors are precise yet durable instruments; however, like any other piece of fine equipment, they require correct installation and reasonable care to assure optimum performance and long life. Extra time spent during installation will pay off in both short and long term performance and reliability. This Mikuni HSR carburetor kit is designed to be a bolt-on application, and as such, is set-up and jetted properly for most applications. However, since Harley-Davidson motors are often highly modified, alternate tuning settings may be required. The Mikuni Tuning Manual helps make jetting alterations and adjustments an easy matter. NOTE: Carburetor Kits not designated as C.A.R.B. exempt, are not legal for motor vehicles operated on public highways in the state of California, or in any other states and countries where similar laws apply. WARNING NOTE: NOTE: WARNING CAUTION NOTE: NOTE: TK-2 6. Install the new assembly into the Mikuni carburetor. Be careful to only gently tighten the plastic nut. 7. Loosen the knurled plastic friction nut behind the choke knob and check for free-play (see Figure 2). Figure 1: Harley nut with Mikuni spring & plunger Figure 2: Choke cable adjustments Mikuni Cable (Evo Kits: 42-8, 45-2 & 45-3) : 1. Remove nut, spring and plunger from the Mikuni. 2. Install the nut, spring and plunger onto the cable. 3. Install the assembly into the Mikuni HSR carburetor. Be careful to only gently tighten the plastic nut. 4. Check for free-play. Adjust the cable as necessary. An optional choke cable mounting bracket is included in the Evo kits for custom installations. Carburetor Installation: 1. Insert the carb fully into the rubber flange, align with engine and tighten the clamp. 2. Slip the fuel hose onto the carburetor’s fuel fitting and secure with the enclosed hose clamp. NOTE: Some Twin Cam installations may require removal of a small amount of fin material from the cylinders to clear the float bowl. Throttle Cables The HSR carburetor uses stock 1990 and later Harley- Davidson cables. However, if your Harley is fitted with some other carburetor, you may need to purchase a set of cables. See your dealer for the correct cable set. 1. Route the throttle cables with large radius curves and so they do not interfere with other components. 2. Screw the cable adjusters together to make them as short as possible. 3. Connect the “close” cable first (see Figure 3). 4. Install the “open” cable next (see Figure 3). 5. Adjust the opening cable until the slide can be opened fully. Snug the adjuster lock nut. 6. Turn the handlebar to the right and adjust the throttle free-play with the closing cable adjuster to approximately 1/8″ (see Figure 4)

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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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HSR Carburetor Total Kits Installation And Tuning Manual

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Filed Under (Tips and Review) by admin on 31-10-2010

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1. Disconnect the battery ground wire from the battery. 2. Turn the fuel petcock to the “OFF” position. 3. Elevate the rear of the fuel tank for better access to the carburetor area. 4. Remove the coil, horn or other devices on the left hand side of the engine to allow free access to the intake manifold bolts. 5. Remove the complete air cleaner assembly, including the backing plate. 6. Disconnect any vacuum hoses and the fuel hose from the stock carburetor. 7. Disconnect the choke cable from the frame. 8. Remove the stock carburetor. 9. Evo: remove the stock manifold. 10. Twin Cam: unplug MAP sensor, remove manifold and then remove the MAP sensor from the manifold. Installation: Intake Manifold: Twin Cam only: Install MAP sensor in Mikuni manifold. 1. Attach the Mikuni manifold to the engine. Align the manifold before tightening the bolts. The flange surface of the Mikuni manifold should be parallel with the front of the engine’s cam cover. Use a level or angle meter to check this. Tighten the manifold bolts. 2. Attach the rubber flange to the Mikuni manifold with the 5/16″x3/4″ bolts and washers. To ease installation, use liqiud detergent to lubricate the manifold seals. Choke: Evo: We recommend that you use the Mikuni choke cable that is furnished with the carburetor. However, you can use the stock Harley cable (’90-’99 models only) if you follow the Twin Cam choke cable instructions. Twin Cam: 1. Remove the Harley choke cable from the stock carb. 2. Remove the Harley spring and plunger from the Harley choke cable. 3. Remove the Mikuni spring and plunger from the Mikuni carburetor. 5. Install the Mikuni spring and plunger onto the Harley choke cable. Change nothing else; be sure to use the Harley plastic nut, not the Mikuni nut. 6. Install the new assembly into the Mikuni. Be careful to only gently tighten the plastic nut.

YAMAHA YFM 350 Removing stock carburetor and cables.

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Filed Under (Yamaha) by admin on 19-01-2012

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Remove seat and gas tank. Make sure fuel petcock is in “off” position. 2. Remove throttle cable paying close attention to routing, as the new cable (s) will need too be routed the same. 3. Remove stock carburetor and stock throttle housing. Preparing motor for carburetor install 1. Remove stock manifold from cylinder head. 2. Place supplied o’ring into aluminum flange as pictured in figure 1. Figure 1. 3. Install aluminum and rubber flange to motor using supplied bolts. See Figure 2. The shorter 25mm bolt will need to be placed in the bottom hole. IMPORTANT NOTE: Install the aluminum flange with the o’ring towards the motor and the thick side up.

Honda TRX 400EX INSTALLATION And REMOVAL INSTRUCTIONS

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Filed Under (Honda) by admin on 14-12-2011

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Quiet cores are supplied with this kit but not installed. To install the quiet cores remove both rear end caps ((turn downs) and install the quiet cores with the tubes facing inward. Re-install the end caps. REMOVAL Remove seat, disconnect attery and remove. Remove front fenders and side skirts. Remove fuel tank (make sure to shut fuel off and drain remaining fuel in the line before removing). Remove stock muffler first, then remove stock headers. Retain the 4 stock header bolts to install on your new exhaust system. Remove the rear bolt from your stock air box. Loosen stock intake clamp at carburetor. Remove stock boost bottle from the side of the boot. Loosen stock snorkel clamp at the air box, remove stock retaining clip at the front of the snorkel. Remove stock air box, intake boot and snorkel together from the ATV. Slide tarter solenoid off of stock mounting prongs. Remove Phillips screws from fuse holder and remove from plastic housing. Remove plastic battery housing from the ATV. Unplug tail light from harness. Unclip harness from the 2 clips above the battery. CARBURATION Now would be a good time to replace your stock main jet, with the supplied 190 main jet and replace your stock pilot jet with the supplied 48 pilot jet. Make certain that all hoses are tight and routed as stock. Be certain carb clamp is tight when re-installed. INTAKE BOOT Remove the intake boot from the stock air box. Take an exacto knife or razor blade and trim off the rubber piece that the hard plastic snorkel slips into. Trim around the intake boot staying the same distance as the rest of the lip. Take a hax saw and cut the groove as the rest of the boot is, being
careful not to cut all the way through (Picture Fig.2).

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42MM MIKUNI FLATSLIDE CARBURETOR INSTRUCTIONS

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Filed Under (Mikuni) by admin on 31-10-2010

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To install, remove the stock carb per Yamaha shop manual procedures. Remove stock throttle cables. Install Mikuni HSR carb into intake manifold and tighten manifold clamp. Install new HSR series throttle cables and adjust cable slack per Yamaha shop manual procedures. Hook fuel line to HSR carb and fasten clamp.* Start motorcycle and fine tune HSR carb for proper running per supplied Mikuni tuning manual. *NOTE: Mikuni HSR series carburetors are designed for gravity-feed fuel systems. You should bypass your stock fuel pump and directly feed your HSR carb right from the fuel petcock. We have noted, though, that you may not be able to get good fuel flow from your Road Star fuel tank in low-fuel situations. You may run your stock fuel pump with the HSR carb, but to do so requires the purchase and installation of an adjustable fuel pressure regulator (set at 1/2 to 1 lb. of pressure). These are available from most auto parts stores. The stock carb has 2 wires running to the lower rear of the float bowl , these were for a carb warmer, they are not used in this application. Unplug these wires at the main wire harness and retain with your stock carb. The Road Star ignition system uses data from the stock throttle position sensor (TPS) to manage your ignition timing. It is necessary to give the bike this information. You may do so by removing the TPS sensor from the stock carb, leaving it plugged into the main wire harness (the sensor must be fixed to a closed-throttle position), or you may locate the plug for the TPS on the main wire harness and test the leads – you will find one ground, one with .5V and one with 1.5V. Connect the 1.5V to the ground and this will give the bike the same information as stock fully closed throttle. The output of the OEM fuel pump is too high and will cause fuel overflow in the HSR carb, resulting in a possible dangerous fire hazard

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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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1996-2004 HONDA XR250R Removing stock carburetor and cables

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Filed Under (Honda) by admin on 26-11-2011

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Install the throttle cables into the supplied throttle housing and place onto clean handlebar end. 2. Remove the rubber carburetor alignment tabs from the manifold using a razor blade or sharp cutters. This should be done with the rag left in the manifold. Be very careful not to damage the manifold or your hands while doing this!! 3. Remove the hex pipe plug from the carb cap using a 11mm or 7/16 wrench. Do not discard plug, as it will be needed later. Install the metering
adjustment tool included in the hardware kit. Do not over-tighten as damage may occur to cap. 4. Install provided fuel line onto fuel inlet banjo and secure with pinch clamp. 5. Place Edelbrock carburetor into manifold. Do not tighten clamp yet. 6. Remove the cable bracket end from cable bracket using #2 phillips. 7. Install pull cable (see Figure 2) end into
the 4:00 position of the cable wheel and the return cable into the 1:00 position. Secure cables into cable bracket by replacing end piece and phillips screw. See figure 3.

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Yamaha FZ-1 TiForce exhaust system Installation Instructions (Slip-on)

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Filed Under (Yamaha) by admin on 03-01-2012

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Loosen the clamp where the stock tailpipe connects to the stock collector. 2. Remove the bolt holding the stock muffler assembly to the footpeg/exhaust bracket. 3. Remove the stock tailpipe and exhaust assembly as one piece. 4. Remove the nut securing the right side center stand support bolt. Install the new supplied bracket as shown in (See figure 1) 5. Remove the right rear footpeg assembly complete, bolt the new footpeg mounting bracket in place of the stock one using supplied bolts. 6. Carefully unbolt the footpeg from the bracket (Be careful there are springs and washers that will fall out if you are not careful), bolt the footpeg into the new billet footpeg bracket. Bolt the footpeg bracket to the footpeg- mounting bracket. (See figure 2) 7. Remove the stock exhaust gasket from the stock tailpipe and installthe gasket into the new tailpipe. 8. Slide the supplied clamp over the new tailpipe and slide the new tailpipe onto the stock collector. 9. Slide the TiForce end can into place. Loosely attach the two rubber bands, stainless steel bands K, and stayarm / hanger G to the end can using the supplied 6mm hardware H. See figure 4. 10. Place the bands approximately 150mm from the edge of the end can. See figure 5. 11. Using the stock provided mounting point on the passenger footpeg, and using the stock mounting bolt, mount the end can loosely, allowing for some adjustment. Insert the stock mounting bolt through the stay / hanger G. 12. Attach the supplied springs to connect the tailpipe and muffler assembly. 13. Make sure the exhaust system is free and clear, if necessary jigglethe system to adjust for proper clearance. 14. Carefully align the two stainless bands K so that they are parallel to each other, and spaced properly on the can (figure 5), then tighten the 6mm hardware H and the stock mounting bolt hardware. Make sure thatthe rubber pads fully cover the band(s). USE CAUTION WHEN TIGHTENING THE 6MM HARDWARE AND THE TWO BANDS SO AS NOT TO CRUSH OR DISTORT THE SLEEVE OF THE CAN. 15. Tighten the supplied clamp to secure the new tailpipe to the factory collector. 16. Using some brake and contact cleaner on a clean rag, carefully wipe down the entire exhaust system to remove any residual oils, anti seize, fingerprints and dirt prior to starting the motor. FAILURE TO CLEAN THE TUBING AND CAN MAY RESULT IN PERMANENT STAINING OF THE SYSTEM WHEN HEATED. 17. Check that all hardware is tightened, then start the motor and check for exhaust leaks.

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