Kohler CV1000 User Manual Page 33

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5.5
Section 5
Fuel System and Governor
5
Fuel Shut-Off
Solenoid
High Altitude Operation
ȱȱȱȱȱȱȱŗśŖŖȱȱ
ǻśŖŖŖȱĞǯǼȱȱǰȱȱȱ¡ȱȱȱȱ
over-rich. This can cause conditions such as black,
¢ȱ¡ȱǰȱęǰȱȱȱȱȱ
power, poor fuel economy, and poor or slow governor
response.
ȱȱȱȱěȱȱȱǰȱȱ
high altitude jet kits are available. The kits include
new main jets, slow jets (where applicable), necessary
ȱȱȬǯȱȱȱȱȱȱȱȱ
correct kit number.
Fuel Shut-off Solenoid
ȱȱȱȱȱȱȱȬěȱ
ǯȱȱȱȱĴȱȱȱȱǯȱȱ
ȱśȬŚǯȱȱȱȱȱȬȱȱȱ
ȱȱŗŘȱȱȱȱȱȱǰȱȱ
ȱĚȱȱȱȱǯȱȱȱȱȱ
ȱȱ¡ȱȱȱȱĚǯ
Figure 5-4. Fuel Shut-off Solenoid.
ȱȱȱȱǰȱȱȱȱȱěǰȱȱ
can determine if the solenoid is functioning properly:
ȱ ŗǯȱ ȱěȱȱȱȱȱȱȱȱ
carburetor. When the solenoid is loosened and
removed, gas will leak out of the carburetor.
Have a container ready to catch the fuel.
ȱ Řǯȱ ȱȱȱȱȱȱȱȱȱȱȱ
ȱȱěȱȱȱǰȱȱȱ¢ȱ
remaining fuel. Take the solenoid to a location
with good ventilation and no fuel vapors present.
ȱȱȱȱȱŗŘȱȱȱȱȱȱ
ȱȱȱȱěǯ
ȱ řǯȱ ȱȱȱȱȱȱȱȃěȄǯȱ
Connect the positive power source lead to the red
lead of the solenoid. Connect the negative power
source lead to the solenoid body.
ȱ Śǯȱ ȱȱȱȱȃȄȱȱȱȱ
pin in the center of the solenoid. The pin should
ȱȱȱȱȃȄȱȱȱȱȱ
ȱȱȱȱȱěǯȱȱȱ
times to verify operation.
Carburetor Details
ȱȱȱȬȱȱȱȱȬĞȱ
design. The circuits within the carburetor function as
described following:
Float Circuit:
ȱȱȱȱȱȱȱȱ¢ȱȱĚȱ
ȱȱȱǯȱȱ¢ȱȱȱȱĚȱ
ȱȱĚȱȱȱȱȱȱǯȱȱ
ȱȱȱǰȱȱĚȱȱȱȱȱ
pressure will push the inlet needle away from the
seat, allowing more fuel to enter the bowl. When
ȱǰȱȱ¢ȱȱȱȱĚȱȱ
again overcome the fuel pressure, rising to the
ȱĴȱȱȱȱĚǯ
Slow & Mid-Range Circuit:
ȱȱȱȱȱȱ¢ȱȱȱȱ
ǯȱȱȱȱȱȱȱȱȱȱ
the slow air bleed jets, fuel is drawn through the two
main jets and further metered through the slow jets.
ȱȱȱȱ¡ȱȱȱ¢ȱȱȱȱȱȱ
exit to the transfer port. From the transfer port the
air fuel mixture is delivered to the idle progression
chamber. From the idle progression chamber the
air fuel mixture is metered through the idle port
ǯȱȱȱȱȱȱȱȱȱ
ǰȱȱȦȱ¡ȱȱȱ¢ȱȱĴȱ
of the idle fuel adjusting screws. This mixture is then
mixed with the main body of air and delivered to
ȱǯȱȱȱĴȱȱȱǰȱ
ȱȱȱȦȱ¡ȱȱȱȱ
ȱȱę¡ȱȱȱȱȱǯȱ
ȱȱĴȱȱȱȱȱȱȱ
becomes great enough so the main circuit begins to
work.
Main (High-Speed) Circuit:
ȱȱȦȱȱȱȱȱȱȱ
ǯȱȱȱȱȱȱȱȱȱȱ
the four air jets, fuel is drawn through the main jets.
The air and fuel are mixed in the main nozzles and
ȱȱȱȱ¢ȱȱĚǰȱȱȱ
mixing of the fuel and air occurs. This mixture is then
delivered to the combustion chamber. The carburetor
ȱȱę¡ȱȱDzȱȱȱȱǯ
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