idle screw on 2003 5pw yamaha r1

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How To Adjust the Accelerator Pump On the 40mm Mikuni Carburetor

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Filed Under (Yamaha) by admin on 21-01-2012

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1) The “blue” colored screw in the image is the duration adjustment screw. Underneath the head of the screw is a lock nut and the bracket arm that the screw is threaded into. To decrease the amount of fuel squirted the adjustment screw is turned “clockwise” or in. To increase the amount of fuel squirted the adjustment screw is turned “counter clockwise” or out. To get the max, amount of decrease remove the screw and take the lock nut off of the screw. Then replace the screw into the cam arm, then replace the lock nut underneath the arm on the screw. this gives you another 3/32″ of an inch in which the screw can be screwed in.
2) Turn the adjustment screw fully clockwise or IN. Start your engine, Blip your throttle open, if the engine stutters, (hesitates), it is not getting enough fuel so turn the screw counter clockwise to increase the amount of fuel squirted from the accelerator pump into the carburetor. Keep blipping the throttle and adjusting the screw till the carburetor starts to cough. Stop here and turn the screw back in till the coughing stops. Tighten down the lock nut. This should give you the best throttle response with the least amount of coughing and backfiring out the carburetor. Timing Adjustment Screw This is the “Green” colored screw just above the Blue duration adjustment screw. The” Mucker” said it best,,,,, This upper screw adjusts the “timing” of the squirt. By altering it’s setting, you can advance or delay the onset of the fuel squirt. But probably, it won’t have to be touched

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Ural carburetors Installation and idle adjustment

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Filed Under (Ural) by admin on 02-11-2010

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1. First you must adjust the idle. It is acceptable per the manual to adjust the idle by using the idle adjust screws (11). This usually involves screwing them then backing out 1 to 1.5 turns. Or you can adjust looking at the sliders 2. If installing the carburetors: a. Remove the cover (2) b. Reomve the slider (3) c. Place the throttle cable through the guide (18) with the spring (4) on the cable. d. Route the cable through the slide catch (6) e. Insert the slide assembly into the chamber and make sure it easily slides up and down. Direct the needle (8) into the opening of the diffuser (angled side visible). f. Screw assembly together and verify via throttle movement that slide moves freely. Attach fuel delivery lines to (12). 3. Using the idle set screw (11) raise the slider so the lower edge is 1-2 mm. 4. Assemble to engine using the proper gaskets (paper – felt – paper). 5. Using the locknut (26) adjust the free play of the throttle cable (2-3 mm) 6. Adjust the idle mixture screw – turn in completely then out 1 to 1.5 turns 1. Remove one of the spark plug caps, and with the cap shorted, adjust (11) to decrease RPM’s to a point of being minimally steady. 2. Adjust the mixture (15) out until RPM’s decrease. Turn in until RPM’s increase slightly. Then turn in screws ¼ to 1/3 revoultion. 3. Do the same for the second carburetor with the first spark plug cap shorted. 4. With both cylinders, adjust each idle (11) on each carburetor the same amount each until it’s at a steady, minimal RPM. Use small changes. (at this point you can use your airflow tool to check). 5. Sharply increase, then decrease throttle. Then engine must return to low RPMs smoothly. If the engine goes below limits, readjust (11) from step 4. Synchronization of the K68 Note: Rather than using the opposite cylinder shorted to test the pull of the live cylinder carburetor, you can use something like a Twinmax connected to the test ports (27 Fig 1). Or, if you have a model without these ports, use a Synchrometer (Appendix 2) held against the face of the carburetor. These tools merely show airflow passing through each carburetor (which is dependent on the position and wear on the slide). If using these tools, it’s not necessary to do the following steps. You wil want to use a throttle guide (Appendix 1), to show airflow at various throttle settings. Using the flow meter of your choice make sure each carburetor is the same at the various throttle settings. 1. Place the motorcycle on the center stand ensuring the rear wheel is suspended 2. Make sure you have large area to work with (safety issues here) 3. Shift into the highest gear with the engine running 4. Short one spark plug cap to the cylinder (using a nail or something in the fins) 5. Increase the speed to 40-50 km/hr 6. Fix the throttle using the throttle (maybe using a throttle stop screw under the throttle housing). 7. Reconnect other cylinder and using the opposite carburetor determine the speed which should be the same as the first. 8. Adjust the position of this slide to achieve the referenced speed using the locknut at the top of the carburetor.

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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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YAMAHA V-STAR 950 NECK COVER INSTALLATION INSTRUCTIONS

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Filed Under (Yamaha) by admin on 10-11-2010

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HARDWARE INCLUDED: (1) M3-0.5 X 30MM PHILLIPS PAN HEAD SCREW (1) M3-0.5 X 10MM LONG PHILLIPS PAN HEAD SCREW INSTALLATION INSTRUCTIONS: 1. ALIGN LEFT SIDE NECK COVER (B) AND RIGHT SIDE NECK COVER (C) WITH MOTORCYCLE FRAME (A) AND BRING TOGETHER SO THAT THE LEFT SIDE UPPER LOCKING TAB (D) SNAPS INTO THE RIGHT SIDE UPPER LOCKING TAB (F). ROTATE THE PART SLIGHTLY, IF NECESSARY, TO SNAP THEM INTO PLACE. 2. ALIGN THE LEFT SIDE LOWER LOCKING TAB (E) WITH THE RIGHT SIDE LOWER LOCKING TAB (G) AND SNAP THEM IN PLACE. THE PARTS MAY BE DEFLECTED SLIGHTLY, IF NECESSARY, TO ALLOW THE TABS TO SNAP INTO PLACE. 3. ALIGN THE LEFT SIDE SCREW BOSS (K) WITH THE RIGHT SIDE SCREW BOSS (L) AND USE THE #2 PHILLIPS HEAD SCREWDRIVER TO INSTALL THE M3-0.5 X 30MM LONG PHILLIPS PAN HEAD SCREW (H). SECURE BUT DO NOT OVER TIGHTEN. 4. ALIGN THE LEFT FRONT SCREW BOSS (M) WITH THE RIGHT FRONT SCREW BOSS (N) AND USE THE #2 PHILLIPS HEAD SCREWDRIVER TO INSTALL THE M3-0.5 X 10MM LONG PHILLIPS PAN HEAD SCREW (J). SECURE BUT DO NOT OVER TIGHTEN. 5. THE BRAKE CABLE SHOULD ROUTE THROUGH AND ABOVE THE FRONT SCREW BOSSES AND THE LIGHT WIRES (WRAPPED IN PLASTIC CONDUIT) SHOULD ROUTE BELOW THE FRONT SCREW BOSSES

HARLEY DAVIDSON MULTI-FIT BRAIDED THROTTLE/ IDLE CABLE KITS REMOVAL AND INSTALLATION INSTRUCTIONS

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Filed Under (Harley Davidson) by admin on 01-02-2011

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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 battery cables, negative (-) cable first or remove the main fuse following the instructions in the service manual. NOTE When performing cable disassembly procedures, make careful notes as to the existing cable routing. Pay special attention to existing cable strap locations before removing so new straps can be placed into the same locations. Do not remove or install the master cylinder assembly without first positioning a 5/32-inch (4 mm) thick insert between the brake lever and lever bracket. Removing or installing the master cylinder assembly without the insert in place may result in damage to the rubber boot and plunger on the front stoplight switch. (00324a) 2. See Figure 1. Place the cardboard insert between the brake lever and lever bracket. 3. See Figure 2. Loosen cable adjuster jam nuts. Turn cable adjusters in until they are as short as possible. This will provide enough slack for easy removal. 4. Remove the right upper and lower switch housing screws INSTALLATION Throttle and Idle Cable Installation 1. See Figure 3. Apply graphite lightly to the throttle grip inside the switch housing and on the throttle end of the handlebar. NOTE The throttle control cable has a larger diameter retaining ring crimped to the cable end than does the idle control cable. For assembly, apply a drop of light oil on the retaining rings of the crimped inserts. 2. See Figure 7. Push the throttle cable housing and retaining ring into the larger hole of the switch housing, located in front of the tension adjuster screw. 3. Push the idle cable housing and retaining ring into the smaller hole of the switch housing, located behind the tension adjuster screw. 4. Push the throttle and idle control cable housings into the lower switch housing until each snaps into place. NOTE For models not equipped with factory-installed cruise control, if the friction shoe has fallen out or become dislodged, install the shoe with the concave side facing up and position it so the pin hole is over the point of the adjuster screw. 5. Push the throttle control grip over the end of the right handlebar until it bottoms against the closed end. Rotate the grip until the ferrule notches are at the top. To prevent binding, pull the grip back about 0.12 inch (3.2 mm). 6. See Figure 3. Position the lower switch housing beneath the throttle control grip. Install two brass ferrules (Item 3, Figure 11) from this kit onto cables, seating the ferrules in their respective notches on the throttle control grip. The cables must be captured in the grooves molded into the grip. 7. Position the upper switch housing over the handlebar and lower switch housing. Route the wire harness conduit through the depression at the bottom of the handlebar. 8. Tighten the upper and lower switch housing screws finger- tight. 9. Position the brake lever/master cylinder assembly inboard of the switch housing assembly, engaging the tab on the lower switch housing in the groove at the top of the brake lever bracket. 10. Align the holes in the handlebar clamp with those in the master cylinder housing and tighten the lower screw and flat washer finger-tight. Position for rider comfort. Beginning with the top screw, tighten the screws to 60-80 in-lbs (6.8-9.0 Nm)

2002-2003 GL1800 BANK ANGLE SENSOR MOUNTING SCREW REPAIR PROCEDURE

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Filed Under (Honda) by admin on 29-01-2011

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1. Insert the ignition key into the lock cylinder and open the fairing pocket lid by turning the key clockwise. Remove the two trim clips by pushing the center pins in. Remove the two screws. Disconnect the opener cable and remove the right fairing pocket. 2. To access the bank angle sensor, remove the two mounting screws securing the connector holder. Place the holder to the side. 3. To check for the proper screw size, slightly tighten both bank angle sensor screws. If the screws are tight, reassemble the unit and apply the identification mark. If the screws spin in the holes, proceed to Step 4. 4. Using a magnetic screwdriver, remove and discard one of the two 4 mm screws securing the bank angle sensor assembly. Replace with a 5 x 12 mm self-tapping screw (see the PARTS INFORMATION section on page 3 for the proper screw for this repair). Repeat for the other screw. 5. Reinstall the removed parts in the reverse order of removal. IDENTIFICATION Apply a white paint dot in the center of the underside of the right fairing pocket lid as shown. This will indicate that the Safety Recall has been performed on this unit

Yamaha Road Star NEEDLE/ JET KIT INSTALLATION INSTRUCTIONS

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Filed Under (Yamaha) by admin on 10-11-2010

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1. Remove the vacuum slide from the carburetor. 2. Remove the OEM needle, spacer and washers, noting order of assembly. 3. Counting from the top to the bottom, install the new Baron needle clip on groove #4 for 04-07 models and on groove #5 for 99-03 models of the replacement. NOTE: Baron adjustable needle – The top is the blunt end of the needle. 4. Reinstall the OEM spacer and washers as shown in this diagram. 5. Reinstall the vacuum slide along with the diaphragm spring. 6. Reattach the diaphragm cover back and tighten screws. NOTE: Verify that the slide maintains its full range of movement. 7. Drain the fuel from the float bowl and remove the bowl cover. 8. Remove the OEM main jet and replace it with a Barons genuine Mikuni main jet. Install the correct main jet as indicated in JET SELECTION area above on this page. Our install guides provide a basic outline on the proper installation of our products. Further tuning and/or fitment may be required. Page: 2 BA-2420RD NEEDLE/JET KIT – Yamaha Road Star (99-07) 9. Thoroughly clean the inside of the float bowl prior to reinstalling it. 10. Reassemble the carburetor by reversing the order of step #1 through step #10. Use the new cap head allen screws in place of the OEM phillips head screws. 11. Locate the fuel mixture screw – it will either be a screw head or a brass plug. If it is a screw head, skip to step #11c. 11c. If you see a brass plug with a small hole in the center, proceed as follows: With the drill bit, carefully and slowly drill through the fuel mixture plug. CAUTION: The fuel mixture screw is located directly beneath this plug. Be prepared to stop the drill and remove the bit the instant you break through the plug. Insert the self-tapping sheet metal screw into the drilled hole and remove the plug. With air/fuel screw now accessible, use a flat blade screwdriver to turn the screw clockwise until it seats, then carefully turn it counter-clockwise 3 1/2 turns. Refer to step #16 for assistance in fine tuning the setting of the air/fuel adjustment screw. 12. Reinstall the carburetor. We strongly suggest that you attach the throttle cables prior to mounting to intake manifold. 13. Reconnect the fuel line, ensuring the clamp is firmly in place. 14. Reinstall all vent hoses and electrical connectors that were previously removed, checking for any obstructions or blockage. 15. Reinstall the OEM air filter assembly or, if you are installing our Big Air Kit (BAK), follow the instructions that accompany that kit, then continue with next step. NOTES: When the BAK is installed, the vent hose that terminated on the rear of the OEM airbox can be relocated in any safe position that does not kink or pinch it. It is important to verify proper throttle operation before starting the engine.

1300 Yamaha V-Star Installation Manual

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Filed Under (Yamaha) by admin on 07-11-2010

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1) Place motorcycle on a firm level surface and secure in a upright position. 2) Remove saddle bags and saddle bag hardware (Tourer model only) Also remove rear riders pegs (Tourer model requires removal of rear footpeg offset hardware as well) 3) Attach bracket A (right) / B (left) to rear footpeg attachment point using new bolts provided. Remount footpegs/saddlebag hardware over top of brackets A/B. NOTE: Do not attach leveling stand bracket at this time 4) Attach bracket C(right) / D(left) to rear fender sub frame using new bolts provided. (Tourer model only – Saddle bag hardware mounts to the outside of brackets C/D. Brackets C/D mount between chrome side rail and saddlebag hardware.) NOTE: Brackets C/D have welded spacers which attach in toward rear fender 5) Attach top of Bracket E(right) / F(left) to rear of brackets C/D. Brackets E/F mount to the inside of brackets C/D. NOTE: Use ½ inch spacer between brackets E/F and C/D on Tourer model ONLY
6) Attach rear of brackets A/B to TOP of forward hitch arms. Attach bottom to brackets E/F to rear hitch plate. 7) Carefully tighten all bolts at this time ensuring hitch is square with motorcycle. Hitch Bracket Identification Leveling stand screw jack installation 1) Attach leveling stand brackets to brackets A and B 2) Thread right side screw jack into threaded hole on leveling stand bracket attached to bracket A sand adjust leveling jack bolt out. 3) Push motorcycle over from left side until right screw jack is touching floor. 4) Thread left side screw jack into threaded hole on leveling stand bracket attached to bracket B and adjust out until motorcycle will rest upright on both screw jacks. 5) Adjust screw jacks until motorcycle is level. 6) After InstaTrike is attached to or removed from receiver hitch, be sure to remove leveling stands and leveling stand brackets. CAUTION – Use screw jacks to hold motorcycle upright and level ONLY. Do not lift motorcycle with screw jacks. CAUTION – Use care when installing screw jacks. Be certain that motorcycle is always in a stable balanced position.
INSTALLATION OF THE TOW-PAC HITCH CART. 1. Place your motorcycle on a smooth flat surface, like a garage floor, and install leveling stands. Install right leveling stand first. Carefully raise motorcycle off of side stand and install left leveling stand. Caution – Use leveling stands to level motorcycle ONLY. Do not raise motorcycle with stands Caution – Be certain that motorcycle is always in a stable balanced position when installing leveling stands. 2. Assemble the axles, tires and wheels, and fenders onto the tow- pac hitch cart. 3. Carefully align the tow-pac hitch cart’s hitch mount with the receiver hitch on the motorcycle. Now push the hitch mount into the receiver hitch. (this might be a little difficult until you get use to doing it. Removing the paint from the hitch mount and applying a little grease will help.) 4. Place the hitch pin through the receiver hitch and hitch mount ( alignment plate ). Install and tighten the tension bolt

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YAMAHA V-Star 1100 Carburetor Bowl Screw Repair and Removal After Stripping and Pilot Cap Removal

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

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When I first started working on bike many years ago, I learned the danger of stripping the heads of Philips screws when removing or installing them on motorcycles. I remember the two worst screws were the casing side-cover aluminum screws and carburetor bowl screws. I think I tried every method of screw removal after they were stripped. Vice grips, better tipped screwdriver, hammer, drill, and other tools were used. One way I learned to remove stripped screws is to re-make the Philips head into a flathead screw. Cutting a slot in the top of the screw and then use a flat-head screwdriver to remove the screw. On some parts this technique can work, other parts and screws it may not. The Philips screws on the bottom of the V-Star carburetor bowls are VERY prone to stripping. In fact, I will not start a carburetor cleaning without new hex head screws to replace the original Philips bowl screws. Replace the bowl screws for yourself if you keep the bike, or for the next rider that will appreciate the hex-head screws when they clean the carburetors. Not many other parts on a V-Star have screws that are prone to stripping. This documentation is to help riders with motorcycle maintenance. Some riders will find themselves with the problem of removing stripped screws. A carburetor cleaning can quickly double in time when you realize the hardest part of the job is removing bowl screws after they strip. And then realizing you do not have the replacement hex-head screws available and must now go to the hardware store.

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650 Yamaha V-Star InstaTrike REMOVAL AND INSTALLATION MANUAL

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Filed Under (Yamaha) by admin on 29-12-2011

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install all bolts loosely until all brackets are in place y Remove any aftermarket accessories (saddle bags, back rests, etc) before hitch installation. After installation remount accessories. NOTE: Some aftermarket accessories may not be compatible with InstaTrike. 1) Place motorcycle on a firm level surface. 2) Remove rear foot pegs and bolts 3) Attach bracket A (left) and bracket B (right) to the inside of the rear foot peg bracket and reattach rear foot pegs using new bolts provided. 4) Attach front of bracket C (left) and bracket D (right) to bottom of brackets A and B 5) Attach bracket E (left) and bracket F (right) to two rear fender attachment bolts using new bolts provided 6) Attach brackets G and H to rear of brackets E and F 7) Attach bottom of brackets G and H to hitch plate. 8) Attach rear of brackets C and D to TOP of forward hitch arms. 9) Tighten all bolts. Installation Diagram Leveling stand screw jack installation 1) Thread right side screw jack into threaded hole on bracket D 2) Push motorcycle over from left side until right screw jack is touching floor. 3) Install left side screw jack on bracket C and adjust out until motorcycle will rest upright on both screw jacks. 4) Adjust screw jacks until motorcycle is level. CAUTION – Use screw jacks to hold motorcycle upright and level ONLY. Do not lift motorcycle with screw jacks. CAUTION – Use care when installing screw jacks. Be certain that motorcycle is always in a stable balanced position

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