Owner`s manual

22
Kohler Diesel
All Liquid-Cooled Series
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Beginning at engine Serial Number 5002295WKHIXHO¿OWHU
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regulation and reduces fuel lift pump fatigue, resulting in
better startability and responsiveness. The old design had
two fuel lines attached, while the new one has four fuel lines
attached.
In the new system, inlet fuel is supplied from the fuel lift
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Any excess fuel is then returned to the fuel tank.
The old system routing consisted of the fuel lift pump
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then delivered to the fuel rail and any excess was returned
directly to the fuel tank.
Fuel Solenoid
Valve
Fuel Return
Line From
Fuel Rail
Banjo Bolt
w/Internal
Check Valve
New Style Fuel Filter Head
Fuel Supply Line From
Fuel Lift Pump
Fuel Supply Line
to Fuel Rail
Fuel Return Line
to Fuel Tank
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Starting at engine Serial No. 5552992, the cylinder head
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The old style bolt, Part No. ED9820-119-S has a hex head
size of 13 mm. The new style bolt, Part No. ED9820-220-S
has a torx head size of E14.
The bolt is completely interchangeable as the only change
was the head size.
Part Number
ED9820-119-S
13 mm Hex
Comparison of Head Bolts
Part Number
ED9820-220-S
E14 Torx