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Anyone know what that small screw is for?

Looks like there's oil leaking from there.
The prev. owner had some rubbery epoxy over it which came loose.

I've got the same issue.. Also like to know what they do.

Brutus wrote:I've got the same issue.. Also like to know what they do.

Is it coming out enough to dribble towards the exhaust header?

Yes, it dribbles.

Brutus wrote:Yes, it dribbles.

Alright. Same here.

plasmid wrote:

Brutus wrote:Yes, it dribbles.

Alright. Same here.

Got a picture of it in the past:

I always assumed it was the oil line feeding the head and cams. I assumed it was a cross drilled hole, and that was simply a plug. I have a spare head on the bench. I'll dare to take the screw out and see what's inside. There is some Loctite that seals and holds, but I don't know the part number off the top of my head.

Cheers, Phil

Yes, a sealed oil gallery. I was advised not to try and remove them. Too soft. Sealed mine with rtv after a very thorough cleaning and it hasn't leaked.

As stated above it's a blanking plug for an oilway drilling. They are on all the 2V engines and nearly all of them leak sooner or later. Use a thread sealant to keep the oil in.

ducinthebay wrote:I always assumed it was the oil line feeding the head and cams. I assumed it was a cross drilled hole, and that was simply a plug. I have a spare head on the bench. I'll dare to take the screw out and see what's inside. There is some Loctite that seals and holds, but I don't know the part number off the top of my head.

Cheers, Phil

as streetsurfer mentioned, locktite rtv I guess.

Thanks for the suggestions.