Kohler KDI 2504TM Workshop Manual page 22

2
The fuel supply system is under low pressure from the tank 1 to
the high-pressure fuel injection pump 5.
NOTE : The representation of fuel tank is purely indicative.
Component not necessarily supplied by KOHLER.
Tab 2.12
POS. DESCRIPTION
1 Fuel tank
2 Fuel supply hose from the tank to the injection pump
3 Fuel filter
4 Electrical fuel feed pump
5 Injection pump
Injector high-pressure hose from the injection pump to
6
the injectors
7 Injectors
2.9.2 Fuel return circuit
The fuel return circuit is under low pressure.
NOTE : The representation of fuel tank is purely indicative.
Component not necessarily supplied by KOHLER.
Tab 2.13
POS. DESCRIPTION
1 Injectors
2 Injectors fuel return pipe
3 Injection pump
4 Fuel tank
5 Fuel return pipe to the tank
2.9.3 Injection pump
Pressure into the injection pump must be positive in all
operating conditions.
The injection pump is operated by means of the pump
control gear and sends high-pressure fuel to the injectors.
NOTE: In the event of leakage from the high pressure
circuit do not intervene with the engine running, but turn it
off and wait 5 - 10 minutes before checking the leak.
Tab 2.14
EN 22
TECHNICAL INFORMATION
Fig 2.4
Fig 2.5
Fig 2.6