I decided to knock the pump in until it stopped to see if it made any difference, I also dripped some fuel down the hole where the oil should come out to lubricate the bar.
Started the saw and the fuel bubbled out, so the pump is working and clear, there was also a trace of oil coming out, but not sure it’s enough.
Next time I use the saw I’ll find out.
If nothing else I certainly know how to take one of these apart now



