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2003 SUZUKI SV 650 FUEL SYSTEM AND THROTTLE BODY SERVICE MANUAL

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Filed Under (Suzuki) by admin on 26-02-2011

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FUEL PUMP The electric fuel pump is mounted at the bottom of the fuel tank, which consists of the armature, magnet, impeller, brush, check valve and relief valve . The ECM controls its ON/OFF operation as controlled under the FUEL PUMP CONTROL SYSTEM . When electrical energy is supplied to the fuel pump, the motor in the pump runs and together with the impel- ler . This causes a pressure difference to occur on both sides of the impeller as there are many grooves around it . Then the fuel is drawn through the inlet port, and with its pressure increased, it is discharged through the outlet port . The fuel pump has a check valve to keep some pressure in the fuel feed hose even when the fuel pump is stopped . Also, the relief valve is equipped in the fuel pump, which releases pressurized fuel to the fuel tank when the outlet of the fuel pressure has increased up to 450 -600 kPa (4.5- 6.0 kgf/cm2,64- 85 psi) . Relief valve Brush , ∎ I,’ Check valve Magnet L Armature When the impeller is driven by the motor, pressure differential occurs between the front part and the rear part of the blade groove as viewed in angular direction due to fluid friction . This process continuously takes place causing fuel pressure to be built up . The pressurized fuel is then let out from the pump chamber and discharged through the motor section and the check valve . FUEL SYSTEM AND THROTTLE BODY 5- 3 Inlet port I I Impeller 5-4 FUEL SYSTEM AND THROTTLE BODY FUEL PRESSURE REGULATOR The fuel pressure regulator consists of the spring and valve . It keeps absolute fuel pressure of 300 kPa (3.0 kgf/cm2,43 psi) to be applied to the injector at all times . When the fuel pressure rises more than 300 kPa (3 .0 kgf/cm2, 43 psi), the fuel pushes the valve in the regulator open and excess fuel returns to the fuel tank . 90 Spring 02 Valve FUEL INJECTOR The fuel injector consists of the solenoid coil, plunger, needle valve and filter . It is an electromagnetic type injection nozzle which injects fuel in the throttle body according to the signal from the ECM. When the solenoid coil of the injector is energized by the ECM, it becomes an electromagnet and attracts the plunger. At the same time, the needle valve incorporated with the plunger opens and the injector which is under the fuel pressure injects fuel in conic dispersion . As the lift stroke of the needle valve of the injector is set constant, the volume of the fuel injected at one time is determined by the length of time during which the solenoid coil is energized (injection time)

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YAMAHA YZF-R125 SPECIFICATIONS AND OWNER'S MANUAL

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Filed Under (Yamaha) by admin on 25-11-2010

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Fuel tank cap To remove the fuel tank cap 1. Open the fuel tank cap lock cover. 2. Insert the key into the lock and turn it 1/4 turn counterclockwise. The lock will be released and the fuel tank cap can be removed. To install the fuel tank cap 1. Push the fuel tank cap into position with the key inserted in the lock. 2. Turn the key clockwise to the original position, and then remove it. 3. Close the lock cover. NOTE: The fuel tank cap cannot be installed unless the key is in the lock. In addition, the key cannot be removed if the cap is not properly installed and locked. WARNING EWA11140 Make sure that the fuel tank cap is properly installed before riding. EAU13211 Fuel Make sure that there is sufficient fuel in the tank. Fill the fuel tank to the bottom of the filler tube as shown. WARNING EWA10880 Do not overfill the fuel tank, otherwise it may overflow when the fuel warms up and expands. Avoid spilling fuel on the hot en- gine. 1. Fuel tank cap lock cover 2. Unlock. 1. Fuel tank filler tube 2. Fuel level
INSTRUMENT AND CONTROL FUNCTIONS 3-8 3 CAUTION: ECA10070 Immediately wipe off spilled fuel with a clean, dry, soft cloth, since fuel may deteriorate painted surfaces or plastic parts. EAU43420 CAUTION: ECA11400 Use only unleaded gasoline. The use of leaded gasoline will cause severe damage to internal engine parts, such as the valves and piston rings, as well as to the exhaust system. Your Yamaha engine has been designed to use premium unleaded gasoline with a research octane number of 95 or higher. If knocking (or pinging) occurs, use a gasoline of a different brand. Use of unleaded fuel will extend spark plug life and reduce maintenance costs. EAU13442 Catalytic converters This vehicle is equipped with catalytic converters in the exhaust system. WARNING EWA10860 The exhaust system is hot after operation. Make sure that the exhaust system has cooled down before doing any maintenance work. CAUTION: ECA10700 The following precautions must be observed to prevent a fire hazard or other damages. Use only unleaded gasoline. The use of leaded gasoline will cause unrepairable damage to the catalytic converter. Never park the vehicle near possible fire hazards such as grass or other materials that easily burn. Do not allow the engine to idle too long.

BUELL ACCESSORY GAS CAP KIT INSTALLATION MANUAL

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Filed Under (Buell) by admin on 29-03-2011

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Installation NOTE When performing the following Steps, use the Fuel Tank Vent Valve Installation Kit (Part Number 91432-96Y). This kit consists of: * Fuel Tank Vent Valve Installation Aid * Fuel Tank Vent Valve Fitting Socket To protect against shock and accidental start-up of vehicle, disconnect the battery cables, negative cable first, before proceeding. Inadequate safety precautions could result in death or serious injury. Always disconnect the negative battery cable first. If the positive battery cable should contact ground with the negative cable installed, the resulting sparks may cause a battery explosion which could result in death or serious injury. 1. Disconnect battery cables, negative cable first. An open flame or spark may cause a fuel tank explosion if all traces of fuel are not purged from the tank. Use extreme caution when servicing fuel tanks. Gasoline is extremely flammable and highly explosive. Do not smoke or allow open flame or sparks anywhere in the area when working on fuel system components. Inadequate safety precautions could result in death or serious injury. 2. Remove gas cap. 3. Carbureted Models: Drain fuel tank. Disconnect hose clamp and fuel supply hose from fuel supply valve and drain fuel into suitable, clean container. See applicable Service Manual, Section 4 for complete, detailed procedure. Fuel Injected Models: Relieve pressure from fuel system. See applicable Service Manual, Section 4 for complete, detailed procedure. Drain fuel tank. a. Using suitable external fuel pump, such as a Gas Caddy, pump fuel from tank and into a suitable, clean container. b. See instructions for external fuel pump for correct use. 4. See Figure 1. Cut cable tie securing vent hose to fitting and remove vent hose from fuel tank. Even with the fuel tank completely drained, a small amount of gasoline may leak from the bore when the fuel supply valve is loosened or removed. Thoroughly wipe up any fuel immediately and dispose of rags in a suitable manner. Gasoline is extremely flammable and highly explosive. Inadequate safety precautions could result in death or serious injury. 5. If the fuel supply valve requires cleaning or repair, refer to applicable Service Manual, Section 4, for complete, detailed procedures. 6. See Figure 1. Remove the fuel filler cap and O-ring. 7. Remove the eight self-tapping screws from fuel clamp flange and remove fuel cap flange

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HARLEY DAVIDSON FUEL LEVEL SENDER ADAPTER BRACKET KIT INSTALLATION MANUAL

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Filed Under (Harley Davidson) by admin on 28-02-2011

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INSTALLATION 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. 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) 2. Remove the currently installed fuel tank from the vehicle. Follow the instructions for the correct model vehicle under FUEL TANK: EFI, REMOVAL in the Service Manual. 3. See FUEL PUMP/FUEL GAUGE SENDING UNIT, REMOVAL in the Service Manual for instructions to: a. Unplug the fuel pump module connector. b. Remove and discard the top plate screws. c. Remove the top plate, fuel pump and fuel level sender (fuel gauge sending unit) from the tank. NOTE Take care to avoid bending the fuel level sender float rod. A bent float rod will lead to erroneous gauge readings. 2 6 1 3 4 7 9 8 5 is05284 1. Fuel level sender 2. Electrical grounding tab 3. Fuel level sender lock tab 4. Adapter bracket 5. Slot (2) 6. Terminal strip insert 7. Sender to adapter lock tab 8. Slider 9. Adapter to tank lock tab Figure 1. Fuel Level Sender Assembly to Adapter – 4. See Figure 1. Clean the electrical grounding tab (2) on the back of the fuel level sender if necessary. The tab must make firm contact with the terminal strip insert (6) in the adapter bracket. Slide the original equipment (O.E.) fuel level sender (1) into the slots (5) in the new adapter bracket (4) as shown until the lock tabs (3 and 7) snap into place. Make sure the wire is not pinched between the adapter and sender. 5. See FUEL SUPPLY CHECK VALVE/TUBE in the Service Manual. Remove the check valve/quick-connect fitting assembly from the old fuel tank, and assemble to the new tank, using a new O-ring (purchased separately). 6. Fit the slider (8) on the adapter bracket into the fuel level sender mounting channel inside the tank, and push down until the lock tab (9) snaps into place. Make sure the sender and adapter wires are not pinched between the adapter and the fuel tank tunnel, and remain accessible through the fuel tank top opening. 7. See Figure 2. Obtain the assembly of the top plate (1), regulator (2) and fuel filter (3) removed from the old fuel tank, and the stainless steel screw (8) and nut (9) provided in this kit.

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2007 Softail HARLEY DAVIDSON FUEL PUMP/ FUEL GAUGE SENDING UNIT REMOVAL AND INSTALLATION

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Filed Under (Harley Davidson) by admin on 30-03-2012

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1. Remove seat. 1 WARNING 1 WARNING To prevent spray of fuel, purge system of high-pressure fuel before supply line is disconnected. Gasoline is extremely flammable and highly explosive, which could result in death or serious injury. (00275a) 2. Purge the fuel supply line of high pressure gasoline. a. See Figure 4-36. Disconnect the fuel pump fuse from the main wiring harness. b. Start the engine and allow the vehicle to run. c. When the engine stalls, operate the starter for 3 seconds to remove any remaining fuel from the fuel lines. 1 WARNING 1 WARNING To prevent accidental vehicle start-up, which could cause death or serious injury, disconnect negative (-) battery cable before proceeding. (00048a) 3. Disconnect negative battery cable. 4. Remove instrument console. a. All but FXSTD, see Figure 4-37. Remove acorn nut and washer on instrument console to separate console from fuel tank. b. For FXSTD, see 8.26 INSTRUMENT CONSOLE: FXSTD. 5. Disconnect console wiring. Figure 4-36. Fuel Pump Fuse: View From Top Figure 4-37. Acorn Nut And Washer: All But FXSTD s0660x8xx 7526
4-28 2007 Softail: Fuel System HOME 1 WARNING 1 WARNING Gasoline can drain from the crossover line when disconnected from fuel tank. Gasoline is extremely flammable and highly explosive, which could result in death or serious injury. Wipe up spilled fuel immediately and dispose of rags in a suitable manner. (00259a) 6. Drain fuel tank. a. Obtain a short section of hose (5/16 inch I.D.). Insert bolt in one end of hose and install hose clamp to ensure that end is securely plugged. b. See Figure 4-38. Cut clamp (1) from one end of crossover hose (2). Quickly replace crossover hose on fuel tank fitting with open end of short hose while directing flow of gasoline from free end of crossover hose into suitable container. 7. See Figure 4-39. Unplug fuel pump module connector (3) [86]. 8. Remove top plate screws (2) and discard. 9. See Figure 4-40. Pull top plate (2) out of fuel tank enough to expose fuel hose and clamp (1). CAUTION Carefully inspect end of hose for cuts, tears, holes or other damage. Replace hose if any damage is found. Even the smallest hole can cause a reduction in fuel pressure. 10. Cut clamp and remove hose from regulator housing fit- ting.

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YAMAHA Road Star Fuel Pump Relocation Kit INSTALLATION MANUAL

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Filed Under (Yamaha) by admin on 08-11-2010

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1. Remove seat and disconnect battery. Remove fuel tank along with both left and right side battery covers, and remove air box from carburetor (all per Yamaha standard shop manual procedures). 2. Remove chrome plastic cover over fuel pump and disconnect choke cable/knob from lower pump bracket. Remove pump-to-carb fuel line from fuel pump. Disconnect fuel pumps electrical lead connector. 3. Remove two (2) hex-head pump mounting bracket bolts and remove pump assembly from motorcycle. Slide fuel pump up and off bracket mounting posts (Caution: excess fuel may drain from pump and/or fuel lines and fuel filter!). Remove heat shield. Remove remaining fuel line from pump. Pull all fuel lines from filter and remove steel springs and hose clamps from these lines (these will be reused on the kits fuel lines). With a sharp knife or box cutter, trim off the top portion of the fuel pumps rubber isolation/mount system per Photo A. Next cut pumps wiring harness approximately half way between connector and pump. Strip the insulation from the ends of these wires as well as from the supplied Baron harness extension wires. Using the supplied electrical butt connectors, crimp Baron harness extensions red wire to pumps black-w/blue-strip wire, and Baron harness extensions black wire to pumps black wire. Repeat this process on other side of wire harness extension with pumps connector. Now, referring to Photo B, you will need to cut off the square tube that runs along the side of the fuel pump with a hack saw. Cut down toward pump body in a straight cut, then cut tube off by cutting along the body. This will allow you to twist pump in the rubber mount so the curved spigot is facing up (clockwise approx 1/4 turn). 4. Remove pump-to-carb fuel line from carb and separate electrical wires from this line. Remove this fuel line from engine. Re-route choke cable to right side of engine (toward carb) and rotate it up and over rear cylinder head back toward left side of bike. Mount new Baron choke bracket to the choke cable and tighten plastic nut. New choke bracket will mount to rear fuel tank mounting location (Photo C). 5. 99~03 models – Remove electrical relay bracket (found under the right side cover) from the bike and slide each relay off of this bracket. Install fuel pump onto new Baron Fuel Pump Bracket and install bracket in the same location as the stock bracket you just removed, using stock mounting hardware. Refer to Photo F for proper installation. 6. 04~07 models Remove electrical relays from stock bracket and remove relays from rubber holder. Cut rubber holder per Photo E and replace one of the relays into the rubber and install on to new Baron bracket. The second relay will be placed to the right of the tool bag under the seat and secured with the provided two-sided tape pad. Reconnect plugs to the relays. (Photo F)

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YAMAHA VMX12W1 (C) OWNER'S MANUAL

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Filed Under (Yamaha) by admin on 25-11-2010

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Brake pedal The brake pedal is on the right side of the motorcycle. To apply the rear brake, press down on the brake pedal. EAU13060 Fuel tank cap To remove the fuel tank cap 1. Push the levers on the left and right side of the rider seat backrest as shown and slide the rider seat backrest forward. 2. Insert the key into the lock, and then turn it 1/4 turn clockwise. The lock will be released and the fuel tank cap can be removed. To install the fuel tank cap 1. Insert the fuel tank cap into the tank opening with the key inserted in the lock and with the mark on the cap facing forward. 2. Turn the key counterclockwise to the original position, and then remove it. 3. Slide the rider seat backrest rearward and push it down. NOTE: The fuel tank cap cannot be installed 1. Brake pedal 1. Opening lever 1. Unlock.
INSTRUMENT AND CONTROL FUNCTIONS 3-7 2 3 4 5 6 7 8 9 unless the key is in the lock. In addition, the key cannot be removed if the cap is not properly installed and locked. WARNING EWA10130 Make sure that the fuel tank cap is properly installed before riding. EAU13211 Fuel Make sure that there is sufficient fuel in the tank. Fill the fuel tank to the bottom of the filler tube as shown. WARNING EWA10880 * Do not overfill the fuel tank, otherwise it may overflow when the fuel warms up and expands. * Avoid spilling fuel on the hot en- gine. CAUTION: ECA10070 Immediately wipe off spilled fuel with a clean, dry, soft cloth, since fuel may deteriorate painted surfaces or plastic parts. EAU13300 CAUTION: ECA11400 Use only unleaded gasoline. The use of leaded gasoline will cause severe damage to internal engine parts, such as the valves and piston rings, as well as to the exhaust system. Your Yamaha engine has been designed to use regular unleaded gasoline with a pump octane number [(R+M)/2] of 86 or higher, or a research octane number of 91 or higher. If knocking (or pinging) occurs, use a gasoline of a different brand or premium unleaded fuel. Use of unleaded fuel will extend spark plug life and reduc

HARLEY DAVIDSON LED FUEL GAUGE KIT REMOVAL AND INSTALLATION INSTRUCTIONS

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Filed Under (Harley Davidson) by admin on 29-01-2011

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Removing the Analog Fuel Gauge NOTE The fuel gauge wires are routed through a tube in the fuel tank, and are secured by a clip at the bottom of the tank and, on some models, a clamp on the frame. Open the clip and clamp as needed, and be sure there is enough slack in the wires to be able to lift out the gauge. 1. At the bottom left side of the fuel tank, bend back the flexible clip slightly to free the fuel gauge conduit. Open the harness clamp on the frame if necessary to free the conduit. Gently pull on the conduit to draw the Multilock connector [117] out of the tunnel. 2. See Figure 2. Depress the pin on the socket terminal side of the connector, and pull apart the pin and socket halves. 3. See Appendix B in an appropriate Service Manual. Use a pick (Snap-On TT600-3 or equivalent) to remove the terminals or clip off the wires. Remove and discard the fuel gauge. 4. For Carbureted Models: See Figure 2. Remove the fuel gauge by firmly grasping and carefully pulling up (do NOT twist) on the gauge just far enough to free it from the fuel tank. Disconnect the two sending unit connectors. Feed the conduit and two wires up through the tube while removing the gauge. Remove and discard the fuel gauge. For Fuel-Injected Models: See Figure 2. Remove the fuel gauge by firmly grasping and carefully pulling up (do NOT twist) on the gauge to free it from the fuel tank. Feed the conduit and three wires up through the tube while removing the gauge. Remove and discard the fuel gauge. 5. Remove and discard the rubber gasket. INSTALLATION For Kit Numbers 75084-04B or 75237-03B 1. See Figure 2. Assemble the new gasket (3) to the LED fuel gauge (1) from the kit. Install the gasket so the flat side contacts the edge of the gauge. 2. See Figure 1. Use three of the Phillips-head screws and washers from the kit to connect the wires as follows: Fasten the Orange wire (1) ring terminal to the gauge connection marked “12V and “O” with a screw and washer. Fasten the Black wire (2) ring terminal to the connection marked “GND” and “BK” with a screw and washer. Fasten the Yellow/White wire (3) ring terminal to the connection marked “Y/W” with a screw and washer. 3. See Figure 2. While carefully lowering the fuel gauge, feed the wire harness (2) down into the drain tube until the three short (Orange, Black, Yellow/White) wires exit the hole at the bottom of the fuel tank. Gently pull the wires to remove slack while installing the gauge to the fuel tank. Do not twist the gauge during installation. Hold the gauge firmly and press down until it snaps into place

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2006 King Cobra Service Procedure

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

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Cobra CX50 SR is a close-tolerance high performance machine and break- in time is very important for maximum life and performance. The CX50 SR can be ridden hard after the first ½ hour break-in time but it is recommended that no adjustments are made to the carburetion or suspension until the full 8 hours of bike break-in has elapsed. Also, after the engine, transmission, and drive train have been broken-in for the full 8 hours, the bike will be faster! Use a fuel / oil mixture of 32:1 for the full 8 hour break-in period. Be sure to use high-octane pump gas, with Cobra’s specially formulated Cobra Venom 2-cycle Race Oil . (Part # MCMUOL02) CAUTION: Failure to use proper fuel, oil, or fuel/oil mixture may result in premature engine wear or damage to the machine. Adhering to the following break-in schedule will result in long lasting high performance machine. • Start bike on stand • First 5 minute period, operate the bike on the stand with a combination of idle and high RPM operation. (avoid prolonged high RPM but spin the rear wheel good at least once or twice per minute) • Allow bike to cool • Ride for 15 minutes maximum (avoid prolonged high RPM operation and avoid abusing the clutch with throttle blipping. • Cool and inspect bike for loose fasteners. • Next ½ hour of operation, avoid prolonged operation at Wide Open Throttle. • After 1 hour of operation o Check for loose bolts and nuts on the bike and retighten as necessary (proper toque values are listed under Specifications). o Clean the carburetor bowl. o Change the transmission / clutch lubricant. • After 8 hours of operation o Change the fork oil. o Have a Certified Cobra Mechanic change the shock oil. • Your bike is now ready for the highest level of competition! NOTE: During break-in the bike will likely lose some engine coolant through the radiator overflow hose. Losing up to 4 oz (120 ml, ½ cup) is normal. Proper coolant level will cover the top of the radiator cores. Removing the radiator cap and looking inside is the only way to check the coolant level. 8
Never open the radiator cap of a machine that has a hot or warm engine or one that has recently been ridden. Burning and scalding could occur. CAUTION: It is important that the radiator cap is installed correctly and completely otherwise engine damage could occur. Starting Procedure Before starting the machine inspect the following: • Check for proper tire pressure in both tires. • Observe the chain tension and adjust if necessary. • Observe the coolant level and fill if necessary. • Verify that the chain rollers and sliders do not have improper wear. • Verify that the handlebars are tight. • Check the throttle for smooth operation and that it ‘clacks’ shut properly. • Check for loose bolts and nuts, and re-torque as necessary. • Verify that the air filter is clean and properly saturated with oil. • Insure that the fuel tank contains an adequate volume of fuel / oil mixture to complete the distance required. (High octane pump gas with Cobra’s specially formulated Cobra Venom 2-cycle Race Oil ) • Turn the fuel on by rotating the fuel petcock knob to the vertically downward position (reserve position is horizontally forward) CAUTION: For best results from your Cobra Motorcycle use only the recommended fuels. Testing has shown that most ‘race’ fuels actually degrade performance. Always wear a helmet and other protective riding gear. When your pre-ride inspection is complete the bike may be started. For a cold engine follow this procedure. 1. Place the motorcycle on a stand of sufficient strength that positions the motorcycle in a level upright position with the rear wheel off the ground. 2. Pull up the choke knob and turn it to lock it. 3. Kick start the engine. 4. Rev the engine in short spurts, turning the throttle no more than 1/4 open until the engine will run without the choke.

Kawasaki KX250F Factory Tuning And Fuel Injection to keep expert riders at the front of the pack

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Filed Under (Kawasaki) by admin on 08-02-2011

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Battery-less fuel injection system Designed specifically for motocrossers, the fuel injection system incorporates a small lightweight ECU and operates without a battery to further eliminate unnecessary weight. And of course, fuel injection eliminates the need to adjust engine settings to suit track and climate conditions. Ensuring quick starting without a battery was a prime directive when developing this fuel injection system. Using only electricity generated by the kick starter, the engine can be started with only three rotations of the crankshaft. The system delivers electricity in the following order:1) ECU, 2) fuel pump, 3) injector. With a warm engine, starting can be accomplished in a single kick. The compact, lightweight ECU, located just in front of the steering head (behind the number plate), was designed specifically for motocross use. To help cope with the shocks and vibrations of motocross riding, the fuel pump relay is built into the ECU. A 43 mm throttle body makes use of a progressive throttle link to deliver airflow in much the same way as would a FCR carburettor. Using two linked shafts, the throttle body opens more quickly after the 3/8 open position, delivering sharp response and excellent power. Lightweight throttle body is approximately half the weight of a FCR carburettor – a weight savings of about 600 g. To ensure the high-rpm engine’s demand for a high flow of fuel in a short period is met, the KX250F’s injector features larger holes than that used on the KX450F. A fine atomising injector with 4 holes disperses spray particles with a droplet size of 120 µm. Fuel flow is about 20% greater than on the KX450F. The newly designed fuel pump, located in the fuel tank, is a lightweight aluminium construction. (Fuel tank capacity is now 7.2 litres.)

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