fuel line diagram for a yamaha srx 250 motorcycle

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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)

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)

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.

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.

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.

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