Demon Fuel Systems 421441 User Manual
Page 7
7
Operation
To start the vehicle, press the accelerator pedal to the floor and pull the choke cable knob out (to the full closed
flap position), release the throttle pedal and crank the engine. You may need to experiment with different
amounts of choke closure depending on your specific combination and the weather conditions. If you need to
change the “fast idle” speed of the engine while the choke is engaged, you can increase the RPM by turning
the fast idle screw clockwise or decrease the RPM by turning the screw counterclockwise.
This can be done easily by using a small 1/4" open-end wrench on most engines. Make certain once the
engine is up to normal operating temperature the choke knob is pushed forward to fully open the
choke flap. This
can affect the vehicle’s performance and fuel economy.
Note:
The choke linkage will only close when you depress the throttle. If you try to close the choke
flap without depressing the throttle you can damage the linkage.
NOTE: ALWAYS CHECK FOR FUEL LEAKS AND PROPER OPERATION OF THE THROTTLE LINKAGE
FROM IDLE TO WIDE OPEN THROTTLE AND BACK TO IDLE BEFORE USING ANY
CARBURETOR. YOUR SAFETY DEPENDS ON IT.