Kohler KDI-TCP 3404 E5 Owner's Manual page 20

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Biodiesel according to EN 14214 (only permissible for mixture with diesel fuel at max. 10% (V/V))
US biodiesel according to ASTM D6751 – 09a (B100) (only permissible for mixtures with diesel fuel at 10% (V/V))
2.5.3 Synthetic fuels: GTL, CTL, BTL, HV
It is a well-known fact that engines which are operated for longer periods with conventional diesel fuel and then
converted to synthetic fuels suffer shrinkage of polymer seals in the injection system and thus fuel leaks. The reason
for this behavior is that the aromatic-free synthetic fuels can lead to a change in the sealing behavior of polymer seals.
Therefore, conversion from diesel fuel to synthetic fuel may only be done after changing the critical seals. The
problem of shrinkage does not occur when an engine was operated with synthetic fuel from the start.
2.5.4 Emission-Related Installation Instructions
Failing to follow the instructions in the applications guidebook when installing a certified engine in a piece of nonroad
equipment violates federal law (40 CFR 1068.105(b)), subject to fines or other penalties as described in the Clean Air
Act.
OEM must apply a separate label with the following statement: "ULTRA LOW SULFUR FUEL ONLY" near the fuel
inlet.
Ensure you are installing an engine appropriately certified for your application. Constant speed engines may only be
installed on constant speed equipment for constant speed operation.
If you install the engine in a way that makes the engine's emission control information label hard to read during normal
engine maintenance, you must place a duplicate label on the equipment, as described in 40 CFR 1068.105.5.
EN 20
TECHNICAL INFORMATION
BIODIESEL COMPATIBILITY