Bleeding The Fuel System - Kohler 4EFOZ Operation Manual

3.5.3

Bleeding the Fuel System

Bleed air from the fuel system to prevent starting failures
and/or erratic operation. One or more of the following
causes air to collect in the fuel system:
D
Operating the generator set until the fuel supply is
emptied.
D
Developing air leaks in the suction side of the fuel
system.
D
Replacing the fuel filter.
Note: Connect the battery during the priming procedure
to allow engine cranking.
engine/generator to start. To prevent starting,
toggle the start/stop switch by momentarily
placing the start/stop switch in the START
position for a few seconds and then placing the
switch in the STOP position. Close the seacock
during bleeding.
Procedure to Bleed the Fuel System
1. Loosen the fuel filter screw at position 1. See
Figure 3-4.
2. Toggle the start/stop switch until fuel, free of air
bubbles, flows from the vent screw at position 1.
Tighten the screw.
3. Loosen the fuel filter screw at position 2.
4. Toggle the start/stop switch until fuel, free of air
bubbles, flows from the vent screw at position 2.
Tighten the screw.
5. Loosen the fuel injection pump screw at position 5.
6. Toggle the start/stop switch until fuel, free of air
bubbles, flows from the vent screw at position 5.
Tighten the screw.
TP-6068 10/02
Do not allow the
Note: Wipe up all spilled diesel fuel after bleeding
the system. Wash hands after any contact
with fuel oil.
4/6.5EFOZ and 5/8EOZ Models
1
2
3
8.5- -27EFOZ and 10- -32EOZ Models
5
1. Vent screw, position 1
2. Vent screw, position 2
3. Fuel filter
4. Fuel injection pump
5. Vent screw, position 5
Figure 3-4 Fuel System (Typical)
Section 3 Scheduled Maintenance
TP-5586-3
2
1
3
4
TP-5592-3
5
4
15