question Diesel in Oil Zetor 3340

Hey there, checked my new to me Zetor 3340 oil level last night and it was way overfilled (previously fine) . Low viscosity and a smell like diesel.
I understand these have a lift pump that is lubricated by the engine oil. Wanted to inquire whether there is an overhaul kit or replacement pump.
Imagine I need a gasket for where it mounts on the block as well.
Have not been able to figure out if the injection pump is also lubricated from the engine oil, but that could also be an issue.

Would love to hear anyone's experience troubleshooting and repairing an issue like this
Thanks

Lift pump hangs under the injection pump, that hand primer pump is attached to it. 3rd bolt on the back needs a quarter inch socket with extension to be able to get to it.