I’m not sure when they stopped using this burner but there are loads about.....both balanced flue and room air models have been used on this boiler.
This one runs at 100 psi pump pressure and use a solid nozzle (0.50 S) with a CO2 level of 10.5 if I remember.
The oil pump has a cartridge type filter, under an allen screw on the side.
John
Yeah that's it. I've replaced all those parts you mention in the past.
Does that mean the c107/9 you recommended will work with this mate?