4.47
CARBURETOR - SPORTSMAN 450
4
6.
Remove the 5 screws that secure the fuel sender to the tank.
7.
Slowly lift the sender out of the tank. Lift the sender out at
an angle, so the float will more easily come out of the fuel
tank.
Testing
Refer to Chapter 10 for fuel gauge sending unit troubleshooting.
Sending Unit Installation
1.
Reinstall the fuel sender with a new gasket, using care not
to bend or damage the float arm.
2.
Install the 5 screws and torque the screws to specification.
Reconnect the sender and route the harness properly.
3.
Reinstall the PVT intake duct, gas tank vent line, front cab
assembly, and side panels.
NOTE: Properly route the gas tank vent line, use
tape to secure the vent line in place. (See Pic 1).
4.
Reconnect the negative battery cable. Test the sender for
proper operation.
TROUBLESHOOTING
FUEL STARVATION/LEAN MIXTURE
Symptoms:
Hard start or no start, bog, backfire, popping
through intake / exhaust, hesitation, detonation, low power,
spark plug erosion, engine runs hot, surging, high idle, idle
speed erratic.
• No fuel in tank
• Restricted tank vent, or routed improperly
• Fuel lines or fuel valve restricted
• Fuel filter plugged
• Carburetor vent line(s) restricted
• Plugged or restricted inlet needle and seat screen
or inlet passage
• Clogged jets or passages
• Float stuck, holding inlet needle closed or inlet
needle stuck
• Float level too low
• Intake air leak ( throttle shaft, intake ducts, airbox
or air cleaner cover)
• Jet needle position incorrect
• Incorrect pilot screw adjustment
RICH MIXTURE
Symptoms:
Fouls spark plugs, black, sooty exhaust smoke,
rough idle, poor fuel economy, engine runs rough/ misses, poor
performance, bog, engine loads up, backfire.
• Air intake restricted (inspect intake duct)
• Air filter dirty/plugged
• Electric choke inoperative
• Incorrect pilot air/fuel screw adjustment
• Faulty inlet needle and seat
• Faulty inlet needle seat O-Ring
• Float level too high
• Poor fuel quality (old fuel)
• Loose jets
• Worn jet needle/needle jet or other carburetor
parts
• Dirty carburetor (air bleed passages or jets)
=
T
Sending Unit Screw Torque:
18--24 in.lbs. (2--3 Nm) in criss-cross pattern
Summary of Contents for 2007 Sportsman 450 EFI
Page 4: ...NOTES...
Page 20: ...NOTES GENERAL INFORMATION 1 16...
Page 27: ...2 7 MAINTENANCE 2 LUBRICATION FLUIDS SPORTSMAN Component Locations Sportsman Only Deluxe...
Page 58: ...2 38 MAINTENANCE Maintenance Schedule Service Date Hours Miles Service Performed Serviced By...
Page 78: ...3 20 ENGINE Cylinder Head Exploded View EH50PL EH50PL A...
Page 114: ...4 2 FUEL SYSTEM...
Page 139: ...4 27 FUEL INJECTION 4 EFI CIRCUIT Fuel Pump EFI CIRCUIT Ignition Coil...
Page 140: ...4 28 FUEL INJECTION EFI CIRCUIT Idle Air Control EFI CIRCUIT Throttle Position Sensor...
Page 142: ...4 30 FUEL INJECTION EFI CIRCUIT Air Temperature Sensor EFI CIRCUIT Malfunction Indicator Light...
Page 156: ...4 44 CARBURETOR SPORTSMAN 450 FUEL TANK FUEL DELIVERY SYSTEM Fuel System Exploded View...
Page 185: ...5 25 BODY STEERING SUSPENSION 5 X2 CARGO BOX Exploded View...
Page 188: ...5 28 BODY STEERING SUSPENSION X2 SEAT ASSEMBLY Exploded Views...
Page 268: ...NOTES FINAL DRIVE 7 40...
Page 270: ...8 2 GENERAL INFORMATION TRANSMISSION GENERAL Mounting Exploded View x2 x3 x4 x4 x2 x1 x1 x1...
Page 276: ...8 8 GENERAL INFORMATION 242 262 262 262 262 262...
Page 318: ...NOTES BRAKES 9 30...
Page 337: ...10 19 ELECTRICAL 10 ALL WHEEL DRIVE AND SPEEDOMETER TROUBLESHOOTING TEST 1 No All Wheel Drive...
Page 338: ...10 20 ELECTRICAL TEST 2 No Speedometer Display TEST 3 No Reverse Speed Limit...
Page 339: ...10 21 ELECTRICAL 10 TEST 4 No AWD Hub Safety Limit...
Page 341: ...10 23 ELECTRICAL 10 TEST 7 Fuel Gauge Display Not Working TEST 8 Shift Indicator Not Working...
Page 347: ...10 29 ELECTRICAL 10 Components of EFI Alternator and DC CDI Ignition System...
Page 348: ...10 30 ELECTRICAL EFI Ignition System Testing Flow Chart...
Page 353: ...10 35 ELECTRICAL 10 PDM...
Page 363: ...10 45 ELECTRICAL 10 Starter Lockout Diagram EFI Starter Lockout Diagram Sportsman 450...
Page 369: ...10 51 ELECTRICAL 10 BASIC WINCH WIRING Pre wired Models...
Page 370: ...10 52 ELECTRICAL TROUBLESHOOTING DIAGRAMS Power On EFI Start Circuit EFI To ECU Pin 12...
Page 371: ...10 53 ELECTRICAL 10 Ignition Coil EFI Fuel Pump EFI...
Page 372: ...10 54 ELECTRICAL Fan EFI Charging System EFI...
Page 373: ...10 55 ELECTRICAL 10 All Wheel Drive EFI Transmission Switch EFI...
Page 374: ...10 56 ELECTRICAL Reverse Override EFI Differential Solenoid X2...
Page 383: ...11 3 500 EFI INTERNATIONAL QUADRICYCLE 11 Exploded View Foot Brake Supply Hand Brake Supply...
Page 392: ...IX 6...
Page 393: ...WD 1 WIRE DIAGRAM 2007 SPORTSMAN ACTIVE DESCENT CONTROL ADC WIRE DIAGRAM...
Page 394: ...WD 2 WIRE DIAGRAM INTENTIONAL BLANK PAGE...
Page 395: ...WD 3 WIRE DIAGRAM 2007 SPORTSMAN 450 WIRE DIAGRAM...
Page 396: ...WD 4 WIRE DIAGRAM...
Page 397: ...WD 5 WIRE DIAGRAM 2007 SPORTSMAN 500 EFI STANDARD WIRE DIAGRAM...
Page 398: ...WD 6 WIRE DIAGRAM...
Page 399: ...WD 7 WIRE DIAGRAM 2007 SPORTSMAN 500 EFI DELUXE WIRE DIAGRAM...
Page 400: ...WD 8 WIRE DIAGRAM...
Page 401: ...WD 9 WIRE DIAGRAM 2007 SPORTSMAN 500 EFI INTERNATIONAL WIRE DIAGRAM...
Page 402: ...WD 10 WIRE DIAGRAM...
Page 403: ...WD 11 WIRE DIAGRAM 2007 SPORTSMAN 500 EFI X2 WIRE DIAGRAM...
Page 404: ...WD 12 WIRE DIAGRAM...
Page 405: ...WD 13 WIRE DIAGRAM 2007 SPORTSMAN 500 EFI X2 QUADRICYCLE WIRE DIAGRAM...
Page 406: ...WD 14 WIRE DIAGRAM...