CAC Gasoline Engine Maintenance And Servicing Manual
96
1.fuel tank 2.fuel pump (submerged in fuel tank) 3. Filter screen prefilter (installed in the
inlet of fuel pump)
4.fuel filter 5.fuel delivery pipe 6.fuel injector(installed in the throttle valve)
7.pressure regulator 8.fuel return pipe
9.fuel recirculation check valve (stop backflowing ) 10.fuel cut-off switch
working principle：
The steel ball ,which is installed in the cone seat, is generally locked by the neighboring magnet attraction.
Under the specified accelerating load, the steel ball is released from the magnetism stillness and begins to
move up the cone seat with the travel of the movement depending on the cone angle .
a quick-release mechanism exists on the top of the ball. the mechanism circuit is closed under the
normal condition, . When the mechanism is stricken by the ball resulting in the position variation, it will vary
from the closed circuit(NC) to the opened circuit(NO) and cut off the ground wire of fuel pump
simultaneously.
For the impact from any direction of the three vertical directions, the switch will fuction under the
condition of more than the peak value: 12g which is equivalent to the working condition of 25km/h or so.
The switch may be reset by pressing the reset button. The reset button is protected by a flexible cover
(protecting the button from the influence from the external material and from the necessity of resetting ).
Warning: Touching the surface lightly. If fuel is smelt or fuel system leaking is present, do not turn on the
switch. The leaking area should be located first and recovered avoiding firing.
if leaking does not exist on the surface, it may be restarted. Press the button to restart the fuel pump.
Fig.156
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