The relevant diagram from the ANEL manual.
I would like to take the oil pump out and clean it while I am here. However I am a bit worried about getting it back together if the bits fall down from higher up in the engine.
Took the pump apart and run it through the ultrasonic cleaner a few time. I expect it would have been fine as it was but as long as I had it out why not clean it,
Cleaned the strainer.