CAC Gasoline Engine Maintenance And Servicing Manual
64
——Adjustment of Peirburg 2E3 carburetor:
Idle speed adjustment:
Rotating the screw inward will increase idle speed.
Rotating the screw outward will decrease idle speed.
CO adjustment:
Rotating the CO screw inward will enrich the mixture .
Rotating the screw outward will make the mixture lean.
Idling
up( Idle
speed
adjustment
with A/C
on):
if
engine is
equipped
with an
A/C
system,
idle speed
should be
raised if
the A/C is
on during
idling.
by adjusting idle adjustment screw of the idle up
actuator valve, idle speed may be adjusted to the specified
valve under load .
2.1 Description for fuel system.
the fuel pump in the fuel tank supplies fuel, though fuel
filter, to the fuel injector in the throttle valve body. the redundant fuel returns
to the fuel tank . The vapor from the fuel tank goes into the charcoal canister
by fuel vapor pipe and is sucked into air intake pipe though the fuel vapor
recirculation solenoid valve which is controlled by ECU. For more detailed
information, See “CAC480M Engine’s single port injection system” .
2.2 for more details of the Fuel pump, fuel vapor recirculation
solenoid valve and charcoal canister, see “CAC480M Engine’s
single port injection system” section.
Fig.115
cut-off valve
screw
Diaphragm rod
valve
cut-off valve
lifting
hose
carbon
tank
engine
Fig.117 schematic drawing of engine 480M fuel system
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