HOME
FUEL PUMP/FUEL GAUGE SENDING UNIT
GENERAL
4.14
s0660x8xx
1WARNING
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)
Refer to the Softail Models Electrical Diagnostic Manual for
information on the function and testing of the fuel pump.
Figure 4-36. Fuel Pump Fuse: View From Top
REMOVAL
7526
1.
Remove seat.
1WARNING
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.
1WARNING
Figure 4-37. Acorn Nut And Washer: All But FXSTD
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.
5.
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.
Disconnect console wiring.
2007 Softail: Fuel System
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HOME
1WARNING
7603
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.
2
1.
2.
1
Clamp
Crossover hose
Figure 4-38. Crossover Hose
11561
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).
1
2
CAUTION
3
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 fitting.
CAUTION
Exercise care to avoid bending float rod of fuel level
sender. A bent float rod will result in erroneous gauge
readings.
1.
2.
3.
Figure 4-39. Top Plate Fasteners
11. See Figure 4-41. Reach into fuel tank and push fuel
pump housing (16) to disengage it from end cap (14).
12. See Figure 4-42. Pull fuel pump out of fuel tank enough
to gain access to fuel gauge sending unit on right side of
fuel tank.
Top plate
Fasteners (10)
Fuel pump module connector [86]
8408
2
13. See Figure 4-41. Pull tab (19) towards top of fuel tank to
release fuel gauge sending unit (20) from mounting tabs.
14. Remove top plate, fuel pump and fuel gauge sending unit
from fuel tank.
1
1.
2.
Clamp
Top plate
Figure 4-40. Fuel Line Clamp
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2007 Softail: Fuel System
HOME
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9
11
13
10
8
11
5
6
14
12
7
15
23
4
24
25
2
3
26
16
22
17
21
1
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
11.
12.
13.
14.
15.
16.
17.
18.
19.
20.
21.
22.
23.
24.
25.
26.
Bail
Fuel filter
Regulator housing
Regulator
Sealing screw @ 18-24 in-lbs (2.0-2.7 Nm)
Top plate: all but FXSTDI
Fuel pump module connector
Top plate gasket
Top plate: FXSTDI
Hose
Clamp
Wire assembly
Rubber sleeve
End cap
Spring
Fuel pump housing
Rubber spacer
Float
Tab
Fuel level sender
Rubber cushion
Fuel pump
Cable strap
Cable strap
Fuel pump inlet filter
Bail bracket
20
19
18
Figure 4-41. Fuel Pump/Fuel Gauge Sending Unit
2007 Softail: Fuel System
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HOME
DISASSEMBLY/ASSEMBLY
8409
Fuel Filter
1.
See Figure 4-41. Disengage bail (1) from bail bracket
(28).
2.
See Figure 4-43. Remove bail bracket from top plate.
3.
See Figure 4-44. Remove fuel filter (2) from regulator
housing (1).
4.
Cut hose clamp (3) and remove hose (4) from fuel filter.
Exercise caution to avoid cutting or damaging hose. Discard fuel filter.
CAUTION
Do not replace the special teflon coated fuel pump wiring
with ordinary bulk wire. Ordinary insulation materials
may deteriorate when in contact with gasoline.
5.
Slide new hose clamp onto free end of hose (from fuel
pump). Install hose onto inlet port at side of fuel filter. If
necessary, use a little denatured alcohol or glass cleaner
to aid installation. Crimp clamp.
6.
See Figure 4-44. Insert filter into fuel pressure regulator
housing, so that inlet port is on fuel pump side.
7.
See Figure 4-43. Slide tab on bail bracket into slot of top
plate until bump on bracket engages depression at side
of filter.
8.
Rotate bail over bail bracket until it fully engages slots on
bracket.
Figure 4-42. Fuel Pump Removal
s0552x9x
NOTE
Carefully inspect end of hose for cuts, tears, holes or other
damage. Replace hose if any damage is found. Even a small
hole can cause a reduction in fuel pressure.
Regulator
1.
Remove fuel pump from regulator housing. See Fuel Filter under DISASSEMBLY/ASSEMBLY.
2.
See Figure 4-45. Slide fuel pressure regulator assembly
forward to free arms from top plate.
3.
Pull regulator from regulator housing by using rocking
motion.
4.
See Figure 4-46. Apply a thin coat of clean engine oil to
new regulator O-rings.
5.
Install fuel pressure regulator into housing.
6.
Fit fuel pressure regulator assembly into top plate.
7.
Install fuel filter. See Fuel Filter under DISASSEMBLY/
ASSEMBLY.
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2007 Softail: Fuel System
Figure 4-43. Bail Bracket
HOME
Fuel Pump
s0553x9x
1.
See Figure 4-41. Cut clamp (11) holding hose (10) to fuel
pump (22).
2.
Disconnect fuel pump connector.
3.
Release end of spring (15) from hook on fuel pump
housing.
3
CAUTION
2
Be absolutely certain fuel pump is faulty before removing
hinge from support arm. Hinge is damaged during
removal and requires replacement of the fuel pump and
bracket assembly.
4.
1
See Figure 4-47. Insert flat tip screwdriver and carefully
crack plastic webbing at top of end cap. Remove end cap
from top plate arm. Discard fuel pump and bracket
assembly.
4
1.
2.
3.
4.
CAUTION
Do not replace the special teflon coated fuel pump wiring
with ordinary bulk wire. Ordinary insulation materials
may deteriorate when in contact with gasoline.
5.
See Figure 4-41. Inspect fuel pump wiring, (12) replace if
damaged.
6.
Install new end cap on top plate arm. Make sure tab
engages end cap.
7.
Install spring on fuel pump housing hook.
8.
Align two holes in fuel level sender with threaded hole
and post on fuel pump housing. Attach fuel level sending
unit to fuel pump housing. Tighten screw to 25-45 in-lbs
(2.8-5.1 Nm).
9.
Connect fuel pump wiring.
Regulator housing
Fuel filter
Clamp
Hose
Figure 4-44. Fuel Filter
s0554x9x
10. Install new clamp over fuel pump hose and attach to
new fuel pump using side of HOSE CLAMP PLIERS
(Part No. HD-41137).
Figure 4-45. Regulator Housing
f1931x9x
1
1.
2.
3.
2
Regulator housing
Regulator
O-rings
3
Figure 4-46. Fuel Pressure and Housing
2007 Softail: Fuel System
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Fuel Level Sending Unit Wire Harness
8399
CAUTION
Do not replace the special teflon coated fuel pump/fuel
level sender wiring with ordinary bulk wire. Ordinary
insulation materials may deteriorate when in contact with
gasoline.
NOTE
Damaged fuel pump and/or fuel level sender wiring requires
replacement of the fuel level sender unit.
1.
Remove fuel pump/fuel gauge sending unit from fuel
tank. See REMOVAL in this section.
2.
Disconnect fuel pump connector.
3.
See Figure 4-48. While pushing tab (2) in direction
shown, pull top plate connector (1) from top plate.
4.
Discard fuel level sending unit and wiring harness.
5.
Obtain new fuel level sending unit and wiring harness.
6.
Install fuel level sending unit. See INSTALLATION in this
section.
7.
Connect top plate connector.
8.
Install fuel pump connector on fuel pump.
9.
Install fuel pump into fuel tank. See INSTALLATION in
this section.
Figure 4-47. End Cap Removal
11562
1
2
1.
2.
Connector [86]
Tab
Figure 4-48. Top Plate Connector
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2007 Softail: Fuel System
HOME
Fuel Supply Check Valve/Tube
s0556x9x
NOTE
The in-tank check valve is housed in the quick-connect fitting.
The check valve prevents the fuel tank from draining when
the external supply line is disconnected.
1.
2
Remove fuel pump/fuel gauge sending unit from fuel
tank. See REMOVAL in this section.
3
1WARNING
Gasoline can drain from the fuel 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. (00260a)
1
1.
2.
3.
1WARNING
Do not twist fuel line fitting, as fuel line can crack causing a fuel leak. Gasoline is extremely flammable and
highly explosive, which could result in death or serious
injury. (00274a)
2.
See Figure 4-49. Pull up on chrome sleeve of quick-connect fitting (1) and pull down on fuel supply line fitting to
disconnect.
1WARNING
Gasoline can drain from quick-connect fitting when
removing fuel line. 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. (00267a)
3.
Unthread fitting from fuel tank.
Quick-connect fitting
Convoluted tube
O-ring
Figure 4-49. Quick-Connect Fitting
4.
Apply a thin film of engine oil to new O-ring (3). Slide Oring down convoluted tube (2) until contact is made with
hex on new quick-connect fitting.
5.
Feed convoluted tube through hole at bottom of fuel tank.
Secure fitting to fuel tank. Tighten fitting to 18 ft-lbs (24.4
Nm).
6.
Pull up on chrome sleeve of quick-connect fitting and
insert neck of fuel supply line fitting. While pushing up on
bottom of fitting, pull down on chrome sleeve until it
“clicks” into the locked position.
1WARNING
To prevent spray of fuel, be sure quick-connect fittings
are properly mated. Gasoline is extremely flammable and
highly explosive, which could result in death or serious
injury. (00268a)
NOTE
Carefully inspect end of hose for cuts, tears, holes or other
damage. Replace hose if any damage is found. Even a small
hole can cause a reduction in fuel pressure.
2007 Softail: Fuel System
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INSTALLATION
s0550x9x
1
CAUTION
Exercise care to avoid bending float rod of fuel level
sender. A bent float rod will result in erroneous gauge
readings.
2
NOTE
Fuel pump sits in left side of fuel tank. Fuel gauge sending
unit sits in right side of fuel tank.
NOTE
Do not apply any type of sealant to gasket.
1.
Install new gasket under top plate.
2.
Install fuel gauge sender into mounting tabs. Push down
on sender until it is seated in tabs.
3.
See Figure 4-42. Install fuel pump until rubber spacer
rests on bottom of fuel tank.
4.
Install hose and new fuel line clamp on fuel filter fitting.
5.
See Figure 4-50. Pivot top plate and push down so end
cap (1) engages fuel pump housing (2).
6.
See Figure 4-51. Place gasket and top plate on tank.
loosely install new sealing screws.
7.
Using the pattern shown, tighten T20 TORX screws to
18-24 in-lbs (2.0-2.7 Nm).
8.
1.
2.
Figure 4-50. End Cap Engaged
11561
10
8
9
See Figure 4-39. Connect fuel pump module connector
(3) [86].
9.
End cap
Fuel pump housing
1
Connect console wiring and install console.
10. See Figure 4-38. Connect crossover hose (2) with new
clamps (1).
3
11. See Figure 4-36. Install the fuel pump fuse in the main
wiring harness.
12. Connect negative battery cable.
13. Fill tank with gasoline and check for leaks.
14. Check fuel system pressure. See 4.15 FUEL PRESSURE TEST.
1WARNING
After installing seat, pull upward on front of seat to be
sure it is in locked position. While riding, a loose seat can
shift causing loss of control, which could result in death
or serious injury. (00070a)
15. Install seat.
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2007 Softail: Fuel System
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5
6
4
2
Figure 4-51. Top Plate Torque Sequence
HOME
FUEL PRESSURE TEST
4.15
GENERAL
s0660x8xx
The fuel pump delivers fuel to the fuel line, to a cavity in the
induction module that supplies the fuel injectors and to the
pressure regulator, where the system pressure is controlled.
Excess fuel pressure is bypassed to the fuel tank through the
pressure regulator.
See Figure 4-52. The fuel pump fuse is located under the
seat. The fuel pump can be turned on by applying battery
voltage to the fuel pump fuse.
Improper fuel system pressure may contribute to one of the
following conditions:
●
Cranks, but won’t run.
●
Cuts out (may feel like ignition problem).
●
Hesitation, loss of power or poor fuel economy.
NOTE
Refer to the Softail Models Electrical Diagnostic Manual for
further information on the function and testing of the fuel system.
Figure 4-52. Fuel Pump Fuse: View From Top
1WARNING
Gasoline can drain from quick-connect fitting when
removing fuel line. 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. (00267a)
3.
TESTING
The fuel pressure gauge (0-100 PSI) allows for fuel injector
and fuel system pressure diagnosis. A special adapter allows
the gauge to be attached to the external fuel supply line.
CAUTION
Be sure to avoid crimping of fuel line when installing/
removing fuel pressure gauge and adapter.
PART NO.
SPECIALTY TOOL
HD-41182
Fuel pressure gauge
HD-44061
Fuel pressure gauge adapters (2)
1.
Pull up on chrome sleeve of quick-connect fitting (fitting
on left side of fuel tank) and pull down on fuel supply line
to disconnect.
CAUTION
The next step requires two fuel pressure gauge adapters.
Failure to use two adapters will cause the fuel line to
twist. This may result in a broken fuel line or fuel line fitting.
4.
Attach fuel line to gauge assembly.
a.
See Figure 4-53. Install a second adapter in series
with the first.
b.
See Figure 4-54. Pull up on chrome sleeve of quickconnect fitting and insert neck of FUEL PRESSURE
GAUGE ADAPTER (Part No. HD-44061) into fuel
supply line.
c.
While pushing up on bottom of adapter, pull down on
chrome sleeve until it “clicks” into the locked position. Tug on adapter to be sure that it will not come
free.
d.
See Figure 4-55. In the same manner, install neck of
second fuel supply line fitting into quick-connect fitting on fuel tank. Tug on fuel supply line to be sure
that it will not come free.
Remove seat.
1WARNING
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 gas.
a.
See Figure 4-52. 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.
2007 Softail: Fuel System
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HOME
1WARNING
7822
To prevent spray of fuel, be sure quick-connect fittings
are properly mated. Gasoline is extremely flammable and
highly explosive, which could result in death or serious
injury. (00268a)
5.
Verify that the fuel valve and air bleed petcock on the
FUEL PRESSURE GAUGE (Part No. HD-41182) are
closed.
6.
See Figure 4-53. Remove protective cap from free end of
fuel pressure gauge adapter. Connect fuel pressure
gauge to Schroeder valve.
7.
See Figure 4-52. Install fuel pump fuse.
8.
Start and idle engine to pressurize the fuel system. Open
the fuel valve to allow the flow of fuel down the hose of
the pressure gauge.
9.
Figure 4-53. Fuel Pressure Gauge Adapters
7833
3
Position the clear air bleed tube in a suitable container
and open and close the air bleed petcock to purge the
gauge and hose of air. Repeat this step several times
until only solid fuel (without bubbles) flows from the air
bleed tube. Close the petcock.
2
10. Open and close throttle to change engine speed. Note
the reading of the pressure gauge. Fuel pressure should
remain steady at 55-62 psi (380-425 kPa).
1
NOTE
If fuel pressure gauge reading is not within specifications, see
Softail Models Electrical Diagnostic Manual for further diagnosis.
11. Turn the engine off. Position the air bleed tube in a suitable container. Open the air bleed petcock to relieve the
fuel system pressure and purge the pressure gauge of
gasoline.
1WARNING
Gasoline can drain from the adapter when gauge is
removed. 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. (00254a)
4
5
1.
2.
3.
4.
5.
Fuel supply line
Adapter to fuel line
Adapter to fuel tank
Pressure adapter/Schroeder valve union
Fuel valve (closed position)
Figure 4-54. Fuel Line
7834
12. Remove fuel pressure gauge from the adapter. Install
protective cap over Schroeder valve.
Figure 4-55. Fuel Pressure Gauge Installed
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2007 Softail: Fuel System
HOME
1WARNING
Gasoline can drain from the fuel line and adapter when
removed. 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. (00255a)
13. Pull up on sleeve of quick-connect fitting and remove fuel
supply line from fuel pressure gauge adapter. Release
adapter from fuel tank in the same manner.
1WARNING
To prevent spray of fuel, be sure quick-connect fittings
are properly mated. Gasoline is extremely flammable and
highly explosive, which could result in death or serious
injury. (00268a).
14. Pull up on chrome sleeve of quick-connect fitting (forward fitting on left side of tank) and insert neck of fuel
supply line fitting. While pushing up on bottom of fuel
supply line fitting, pull down on chrome sleeve until it
“clicks” into the locked position. Tug on fuel supply line to
be sure that it will not come free.
1WARNING
After installing seat, pull upward on front of seat to be
sure it is in locked position. While riding, a loose seat can
shift causing loss of control, which could result in death
or serious injury. (00070a)
15. Install seat.
2007 Softail: Fuel System
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