1996 harley magnetti marreli fuel pressure regulator vacuum line routing

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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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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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Ducati 916-998 / 748 Variable Pressure Fuel Regulator installation Manual

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Filed Under (Ducati) by admin on 26-10-2010

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1 RACING SERVICES 115 CARLINGFORD RD EPPING SYDNEY 2121 AUSTRALIA Part # EDU001 Type 3 Please note: These instructions refer to Type 3 Ducati VariRegs. Type 3 VariRegs may be distinguished by a hole & groove machined into the end face of the adjustment screw. VariReg -Variable Pressure Fuel Regulator Suitable for:- Ducati 916-998 / 748 all models. The Epicycle VariReg will allow a fuel pressure rate of 300 kPa (stock) to 540 kPa. By increasing the pressure available at the injectors, more fuel will flow thus richening mixtures. The available increase in fuel pressure is sufficient to allow the fitment of performance parts, without the high end lean condition normally experienced with the stock fuel pressure. This lean condition is the result of injectors that are too low in flow rate, and even when switched on continuously, are incapable of delivering the required quantity of fuel. Changes to the fuel mapping may be required when using this product. The increase in fuel pressure is variable by the owner and may be altered at any time as required. The unit comes pre-set at 450 kPa. It should be noted that the VariReg is designed for a maximum pressure of 540 kPa, but pressures in excess of 450 kPa require the fitment of the CORSA style high output fuel pump. ** Under no circumstances should the pressure exceed 450 kPa if using the standard road pump! ** Pressures may be set in the following manner. ** This method should be used as a guide only. Use of a suitable pressure gauge is recommended.** 1 . Rotate the adjustment screw “IN” (clockwise direction) using an 11mm or 7/16″ spanner until the head of the screw is seated against the body. Use a tommy bar in the 5mm hole in the side of the VariReg to prevent rotation of the body

HARLEY DAVIDSON SOFTAIL FRONT SPOILER KITS INSTALLATION MANUAL

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Filed Under (Harley Davidson) by admin on 09-03-2011

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This instruction sheet references Service Manual information. A Service Manual for your model motorcycle is required for this installation and is available from a Harley-Davidson Dealer. Kit Contents See Figure 2 and Table 1. INSTALLATION 1. Position the vehicle on a motorcycle lift table. To prevent accidental vehicle start-up, which could cause death or serious injury, remove maxi-fuse before proceeding. (00251a) 2. Refer to the Service Manual and follow the instructions given to remove the Maxi® Fuse. 3. Raise the vehicle on the lift table to allow access to the lower front portion of the frame. 2008+ 2007 7 8 11 3 3 4 4 12 5 5 1 1 9 2 2 10 6 6 9 9 11 13 is02652c 8. 1. Two-pin voltage regulator connector (2007 only) Voltage regulator 2. 9. Voltage regulator attaching screws (2) Cable strap (2 for 2007, 1 for 2008 and later) 10. 3. Lower voltage regulator cover (2007 only) Voltage regulator bracket 4. 11. Bracket screw to engine crankcase (2) Oxygen sensor connector 12. 5. Crank position sensor connector (2007 only) Voltage regulator caddy 6. 13. Voltage regulator caddy cover Horn connectors (some 2008 and later models) 7. Four-pin voltage regulator connector (2007 only) Figure 1. Original Equipment Voltage Regulator  NOTE For 2007 models: The ground wire on the voltage regulator must be re-attached at the original location when re-installing the voltage regulator to ensure adequate ground. 4. For ALL models: See Figure 1. Remove and discard the voltage regulator caddy cover (6) from the regulator bracket (3) and caddy (5). For 2007 models: In addition, remove the lower voltage regulator cover (10). 5. Remove and retain the hex socket head screw (4) at the top left of the bracket For 2007 models: In addition, disconnect the ground wire. Free the cable straps (9) from the regulator bracket, beneath the regulator. 6. Remove the two hex socket head screws with washers (2) retaining the voltage regulator to the bracket. Remove and save the regulator, but discard the screws. 7. Remove and retain the screw (4) at the top right of the regulator bracket. Remove the bracket from the engine. 8. For 2008 and later models: Free the strap (9) that ties the jiffy stand wiring to the voltage regulator bracket. Unfasten the three-way jiffy stand sensor connector and the two-way crank position sensor connector [79] (12) from the T-studs on the back of the regulator bracket (3). Discard the bracket. Disconnect both plugs from the back of the voltage regulator (1). For 2007 models: Unfasten the four-way (7) and two-way (8) voltage regulator connectors from the T-studs on the back of the regulator bracket (3), and discard the bracket. Disconnect the voltage regulator (1) at both connectors. 9. For 2008 and later models: Unclip the two-way O 2 (oxygen) sensor electrical connector [138] (11) from the voltage regulator caddy (5). For 2007 models: Unfasten the two-way crank position sensor connector [79] (12) from the voltage regulator caddy (5). Remove the caddy from the vehicle frame. a. For 2007 models: Unclamp the bottom of the caddy from the engine mount spacers. b. For ALL models: Unhook the top clips from around the tabs on the front of the engine casting. Remove the original equipment (O.E.) caddy from the vehicle frame, and discard it.

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Harley-Davidson FLTR/ FLH/ FLHT/ FLHR EFI models 1995-2001 Variable Pressure Fuel Regulator Intallation manual

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Filed Under (Harley Davidson) by admin on 27-04-2012

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1 . Ensure vehicle runs correctly through all rpm ranges and idles correctly before attempting any work. It is highly recommended that a pressure / flow test be carried out before & after installation of the VariReg to determine fuel system condition . Stock HD 300 kPa / 44 psi, VariReg as delivered 360 kPa / 52 psi Note: In some countries gas stations do not “final filter” the fuel & therefore we recommend that the fuel filter canister be replaced every 15,000 klms (10,000 miles). Restriction of the fuel by way of a blocked or partially blocked filter will result in difficulty in tuning or failure to obtain satisfactory results during tuning. Should you experience difficulties in tuning, see Diagnosing fuel filter and pump faults 2. Remove air filter cover, air filter and backing plate. Check Throttle Position Sensor value at completely closed throttle as best performance will be obtained at the nominated settings. This will require backing off the idle screw and cold start idle actuator and screw adjustment as described in the workshop manual. The original T.P.S. values should be recorded for possible future reference. To set TPS values without the HD breakout box see VariReg TPS Setting for Harley-Davidsons The T.P.S. values must be set to 1995 – 1996 175 mV (+/- 25mV) 1997 – 2001 275 mV (+/- 25mV) Record the original TPS value here. ………………..mV YOU MUST ENSURE THROTTLE PLATES ARE COMPLETELY CLOSED AND NO BINDING EXISTS IN CABLES to obtain the correct value setting. 3. Reset idle screws to approximate previous settings, no need to start the engine. 4. Complete full or partial fuel tank removal as described in workshop manual. 5. Remove stock fuel pressure regulator as described in workshop manual and leave Horn removed from vehicle until after tuning, this will allow ease of access to the regulator

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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Carbureted vs. Fuel Injected Systems

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Filed Under (Tips and Review) by admin on 25-10-2010

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fuel injection (FI) systems have been around since the 1950′s and became widely used in cars during the 80′s. By the 1990′s all cars sold in the United States were equipped with FI systems, and though motorcycle manufacturers have included FI systems with some models as early as 1982, it isn’t until recently that the industry has seen wide spread use of FI. Since a lot of people come into my shop with questions about FI, I thought I would point out some of the differences between FI and carbureted systems as well as the benefits and disadvantages of both. A carbureted system is a mechanical system using air pressure to control the flow of fuel through the system. There are three basic parts in a carburetor, the throttle valve, the venturi and the float bowl. The throttle valve controls the amount of air that flows into the throat of the carburetor also known as the venturi which is simply a tapered hole through the carburetor body. As the venturi narrows, air moving through it is forced to speed up creating low pressure inside the carburetor. In a siphoning effect as the air tries to equalize the pressure, fuel is drawn in from the float bowl mixing with the air before entering the engine. The wider open the throttle valve, the more air will flow, drawing more fuel. A number of circuits are built into the carburetor in order to control the amount of air/fuel being drawn into the engine. In this context a circuit refers to a fuel passageway as opposed to an electrical circuit. In fact, nothing electrical controls fuel delivery in a carbureted system, it is all based on fluid flow, vacuum and hydraulics. The different circuits represent various throttle positions such as idle, partially open and fully open, and each of these circuits can be tuned to modify the efficiency of fuel delivery to the system. Fuel injection (FI) systems, on the other hand, rely on an electronic fuel pump to deliver fuel. The fuel pump delivers fuel at around 50psi as opposed to carbureted systems at normal atmospheric pressure of about 15psi. When the fuel reaches the injectors, the higher pressure allows much finer atomization (creating mist) of the fuel. The injectors then spray the atomized fuel into the intake manifold in a uniform conical pattern. The uniform pattern and fine atomization of the fuel spray increase the efficiency in which it is burned

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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HARLEY DAVIDSON CHROME FUEL TANK TRIM PANEL INSTALLATION MANUAL

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Filed Under (Harley Davidson) by admin on 25-02-2011

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INSTALLATION 1. Refer to the Owner’s Manual and follow the instructions given to remove the seat. Retain all seat mounting hard- ware. Stop the engine when refueling or servicing the fuel system. Do not smoke or allow open flame or sparks near gasoline. Gasoline is extremely flammable and highly explosive, which could result in death or serious injury. (00002a) 2. See the Figure 5. Remove the original fuel filler cap (A) from the tank and set it aside. Obtain a small diameter Harley-Davidson fuel filler cap (B) and screw it into the fuel filler opening. For Model XL883C, or other models equipped with Genuine Motor Parts Large Capacity Fuel Tank 3. To ensure surface cleanliness, clean the top of the fuel tank with a mixture of 50 to 70% isopropyl alcohol and 30 to 50% distilled water. Allow to dry thoroughly. 4. Measure and mark the centerline of the fuel tank, with a wax pencil or water-based marker, at the rear of the tank as shown in Figure 3. Proceed to Step 10. For Model XL1200C 2 1 is 01910 1. Original fuel tank trim panel liner 2. Fishing line (or string) Figure 1. Removing the Existing Trim Panel (XL 1200C) 5. See Figure 1. Insert the fishing line (2) between the rear of the fuel tank and the liner (1) on the underside of the original trim panel. NOTE Raise the ends of the fishing line away from the fuel tank to avoid scuffing the tank finish 6. Using a side-to-side “sawing” motion, work the fishing line toward the front of the fuel tank to break the adhesive bond between the trim panel and the tank. 7. Carefully pull the trim panel and liner off of the tank and discard it. NOTE Be careful not to scratch the paint on the fuel tank when removing the adhesive

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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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