DR ALL-TERRAIN Wartungshandbuch Seite 141

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FUEL SYSTEM (DFI) 3-77
Fuel Line
NOTE
The gauge needle will fluctuate. Read the pressure at
the average of the maximum and minimum indications.
If the fuel pressure is much lower than specified, the fuel
pressure regulator in the fuel pump have been clogged or
stuck. Replace the fuel pump (see Fuel Pump section).
If the fuel pressure is much lower than specified, check
the following.
Fuel Line Leakage
Amount of Fuel Flow (see Fuel Flow Rate Inspection)
If the fuel pressure is much lower than specified, and if
inspection above checks out good, replace the throttle
body assy, or the fuel pump and measure the fuel pres-
sure again (see appropriate sections).
Remove the fuel pressure gauge, hoses and adapter.
Install the removed parts.
Fuel Flow Rate Inspection
NOTE
Be sure the battery is fully charged.
WARNING
Gasoline is extremely flammable and can be explo-
sive under certain conditions. Make sure the area
is well-ventilated and free from any source of flame
or sparks; this includes any appliance with a pilot
light. Do not smoke. Turn the ignition switch OFF.
Be prepared for fuel spillage; any spilled fuel must
be completely wiped up immediately.
Turn the ignition switch, and engine stop switch OFF.
Wa it until the engine cools down.
Prepare a fuel hose (Special Tool: 57001-1607) and a
measuring cylinder.
Special Tool - Fuel Hose: 57001-1607
Remove the fuel hose (see Fuel Hose Replacement in the
Periodic Maintenance chapter).
WARNING
Be prepared for fuel spillage; any spilled fuel must
be completely wiped up immediately.
When the fuel hose is disconnected, fuel spills out
from the hose and the pipe because of residual
pressure. Cover the hose connection with a piece
of clean cloth to prevent fuel spillage.
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