beta 20hp diesel engine

[greengrass]

Hi I have just purchased a Boat with a Beta 20hp diesel engine, I sailed it to my new mooring about 2 hours without fault, when I got there I removed the covers around the engine to view, just above the air filter near one of the injectors there seems to be a screw missing I have a photo of this which I have uploaded, can anyone help thank you,
Greengrass.

 

[greengrass]

Re: beta 20hp diesel engine

I have just found out what it is!, it`s for the Calorifier supply and has a hollow screw fitted in so no problem with engine it doesn`t really do anything unless you want to convert it but thanks for your suggestions.