Cub Cadet 8454 - Manual (Page 37)

ENGINE
2-15 D569-W02 May-2003
569W228A
569W227A
(1) Fuel Tank (5) Injection Nozzle
(2) Fuel Filter (6) Fuel Overflow Pipe
(3) Injection Pump (7) Fuel Feed Pump
(4) Injection Pipe
2.4 FUEL SYSTEM
(a) To Fuel Tank
(b) From Fuel Feed Pump
(c) To Injection Pump
(1) Cock (4) Retainer Ring
(2) Air Vent (5) Pot
(3) Filter Body (6) Filter Element
A. FLOW OF FUEL
The fuel is fed from the fuel tank (1) through the fuel
feed pump (7) to the injection pump (3) thru the fuel
filter (2). The injection pump force-feds the fuel through
the injection nozzles (5), which inject the fuel into the
cylinders for combustion. The excessive fuel from the
injection pump to the injection nozzles is collected in
the fuel overflow pipes (6) and returns to the fuel tank.
B. FUEL FILTER
The fuel filter removes dirt and water with its fine filter
paper, which collects particles of 90 microns (0.0034
in.) at 20 kPa (0.2 kgf/cm
2 , 3 psi). The fuel from the fuel
feed pump is filtered by the filter element (6), while
flowing through the filter body (3). The air vent (2) re-
turns the air in the fuel to the fuel tank to prevent the
engine from stopping or running irregularly.